New approach to detection of incipient slip using inductive sensory system
- Authors: Al-Mamun, Abdullah , Ibrahim, Yousef
- Date: 2010
- Type: Text , Conference proceedings
- Full Text: false
Utilisation of data mining in mining industry: Improvement of the shearer loader productivity in underground mines
- Authors: Balaba, Benhur , Ibrahim, Yousef , Gunawan, Indra
- Date: 2012
- Type: Text , Conference proceedings
- Relation: Industrial Informatics (INDIN), 2012 10th IEEE International Conference, Beijing, China, 25-27 July 2012 p. 1041- 1046
- Full Text: false
- Reviewed:
- Description: This paper presents an investigative study in which data were gathered and used in underground mining to improve the planned maintenance program and reliability of the shearer loader in the underground mining. A cost effective maintenance and operation strategy and practices is mandatory to meet the production demand and the required level of service of this critical asset of the plant. The study conducted and presented in this paper includes a detailed review of failure history data and the use of analytical technique available to understand failure characteristics and its effect on the throughput and the overall performance of the longwall operation. This is to achieve further productivity increases to meet business goals. Analytical tools such as Failure Mode and Effect and Criticality Analysis (FMECA) and Weibull analysis were used in this investigation. The study has highlighted the criticality of some failures and the actions needed in this industrial case to improve the reliability and planned maintenance for a better mining productivity.
Novel tire inflating system using extreme learning machine algorithm for efficient tire identification
- Authors: Choudhury, Tanveer , Kahandawa, Gayan , Ibrahim, Yousef , Dzitac, Pavel , Mazid, Abdul Md , Man, Zhihong
- Date: 2017
- Type: Text , Conference proceedings , Conference paper
- Relation: 2017 IEEE International Conference on Mechatronics, ICM 2017; Gippsland, Victoria; 13th-15th February 2017 p. 404-409
- Full Text: false
- Reviewed:
- Description: Tire inflators are widely used all around the word and the efficient and accurate operation is essential. The main difficulty in improving the inflation cycle of a tire inflator is the identification of the tire connected for inflation. A robust single hidden layer feed forward neural network (SLFN) is, thus, used in this study to model and predict the correct tire size. The tire size is directly related to the tire inflation cycle. Once the tire size is identified, the inflation process can be optimized to improve performance, speed and accuracy of the inflation system. Properly inflated tire and tire condition is critical to vehicle safety, stability and controllability. The training times of traditional back propagation algorithms, mostly used to model such tire identification processes, are far slower than desired for implementation of an on-line control system. Use of slow gradient based learning methods and iterative tuning of all network parameters during the learning process are the two major causes for such slower learning speed. An extreme learning machine (ELM) algorithm, which randomly selects the input weights and biases and analytically determines the output weights, is used in this work to train the SLFNs. It is found that networks trained with ELM have relatively good generalization performance, much shorter training times and stable performance with regard to the changes in number of hidden layer neurons. The result represents robustness of the trained networks and enhance reliability of the mode. Together with short training time, the algorithm has valuable application in tire identification process. © 2017 IEEE.
- Description: Proceedings - 2017 IEEE International Conference on Mechatronics, ICM 2017
OEE improvement of thermoforming machines through application of TPM at Tibaldi Australasia
- Authors: Chundhoo, Vickram , Chattopadhyay, Gopinath , Gunawan, Indra , Ibrahim, Yousef
- Date: 2017
- Type: Text , Conference proceedings , Conference paper
- Relation: 2017 IEEE International Conference on Industrial Engineering and Engineering Management, IEEM 2017; Singapore, Singapore; 10th-13th December 2017 p. 929-933
- Full Text:
- Reviewed:
- Description: Overall Equipment Effectiveness (OEE) evaluates quantitatively how effectively a manufacturing operation is utilised. Total Productive Maintenance (TPM) was considered by Tibaldi, a leading food manufacturer in Australia for achieving OEE. This research project has identified performance gaps, developed plan and implemented it in Thermoforming area of the business. The developed methodology helped Tibaldi in improving productivity and quality through TPM involving machines, equipment, processes, and employees. This paper demonstrates how this can be achieved by reducing lead time and establishing lean environment. Productivity improvement through the devised methodology led to further enhancement of competitiveness of the organisation for domestic and international markets of processed food manufactured by Tibaldi Australia. Lessons learned from application of TPM in Thermoforming, a key asset area, is rolled out to other sections of the plat and results from this pilot study are presented in this paper.
A new method of electrical equipment maintenance optimisation based on reliability analysis: industrial perspective
- Authors: DeLa Rosa, Wolman , Ibrahim, Yousef
- Date: 2008
- Type: Text , Conference paper
- Relation: Industrial Electronics, 2008. ISIE 2008. IEEE International Symposium p. 1796-1801
- Full Text: false
- Reviewed:
- Description: This paper describes a new methodology for developing common maintenance strategy based on reliability-centered maintenance (RCM) principles. The development took place in a major industrial establishment in South America. The name of this industrial establishment is suppressed for commercial confidentiality. Performance-based maintenance contract has become a general trend in many industrial organizations. This allows the organizations to focus on their core business while others handle maintenance tasks. This paper demonstrates that the transition of a maintenance contract based on body shop to a one based on performance is feasible. As demonstrated in the paper, this can be accomplished by changing the maintenance strategy from being based on vendor recommendations to a strategy based on RCM principles. The new strategy can computer-simulated to calculate the maintenance indicators. The produced indicators are the basis to change the traditional maintenance contract to a performance based maintenance contract. The experience gained and the method of simulation is explained in this paper. The optimization process and its results are discussed.
E-Learning in Industrial Electronics during Covid-19
- Authors: Dunai, Larisa , Martins, Joao , Umetani, Kazuhiro , Lucia, Oscar , Ibrahim, Yousef , Appuhamillage, G. K.
- Date: 2021
- Type: Text , Conference paper
- Relation: 22nd IEEE International Conference on Industrial Technology, ICIT 2021 Vol. 2021-March, p. 1227-1233
- Full Text: false
- Reviewed:
- Description: The educational methodologies employed in Industrial Electronics have been affected by Covid-19. In many cases, conventional learning methods relying on face-to-face lectures have been replaced by online methodologies. The whole process has required a fast adaptation and development of the e-learning tools to ensure a quality of theoretical, practical and laboratory lectures, as well as the development of new methods for the reliable assessment of the learning process. From this perspective, the present paper deals with the different strategies that have been implemented in institutions of several countries located in different geographical areas, including Portugal, Spain, Japan and Australia. It is shown that the use of methodologies, such as flip teaching, has provided a wide variety of possibilities to adapt to the new educational context. Moreover, for Industrial Electronics degrees, the use of virtual or remote laboratories, portable learning tools and advanced information and communication technologies have also risen as valuable resources. The paper also reports the problems arising during the development of the e-learning tools, their implementation constraints, and the evaluation of their results. © 2021 IEEE.
Optimal sensing requirement for slippage prevention in robotic grasping
- Authors: Dzitac, Pavel , Mazid, Abdul Md , Ibrahim, Yousef , Appuhamillage, Gayan , Choudhury, Tanveer
- Date: 2015
- Type: Text , Conference proceedings
- Full Text: false
- Description: This paper presents a new theoretical development and modelling related to the requirement of the minimum number of sensors necessary for slippage prevention in robotic grasping. A fundamental experimental investigation has been conducted to support the newly developed postulate. A series of basic experiments proved that it is possible to evaluate the contributions of various sensors to slippage prevention and control in robotic grasping. The use of three discrete physical sensors, one for each of the three sensing functions (normal, tangential and slippage), has been proven to be the most reliable combination for slippage prevention in robotic grasping. It was also proven that the best performance from a two-sensor combination can be achieved when normal grasp force and tangential force are both monitored in the grasping process. © 2015 IEEE.
Friction-based slippage and tangential force detection in robotic grasping
- Authors: Dzitac, Pavel , Mazid, Abdul Md , Ibrahim, Yousef , Choudhury, Tanveer , Appuhamillage, Gayan
- Date: 2015
- Type: Text , Conference paper
- Relation: IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society p. 004871-004874
- Full Text: false
- Reviewed:
- Description: This paper presents a newly developed parallel gripper prototype capable of sensing grasp force, tangential force and slippage. In this design the gripper itself is used as part of the sensing strategy rather than just being simply a structural support for other sensors. The sensing capability of this gripper is simple in design and reliable. The sensing strategy can be customised to specific applications such as the ability to handle large loads while maintaining its ability to detect slippage as reliably as when handling lighter loads.
Optimum grasp force and resistance to slippage
- Authors: Dzitac, Pavel , Mazid, Abdul Md , Ibrahim, Yousef , Choudhury, Tanveer , Appuhamillage, Gayan
- Date: 2017
- Type: Text , Conference paper
- Relation: 2017 IEEE International Conference on Mechatronics (ICM) p. 297-302
- Full Text: false
- Reviewed:
- Description: This paper presents an analysis and experimental results as part of the research into the optimal rate of grasp force application in precision grasping. It also offers the concept of resistance to object rotation in the robot gripper, which in turn contributes to the resistance to object slippage during robotic object manipulation. It is envisaged that this knowledge will be useful to researchers and designers of robotic grippers, especially those for industrial applications.
Friction-based slip detection in robotic grasping
- Authors: Dzitac, Pavel , Mazid, Abdul Md , Ibrahim, Yousef , Appuhamillage, Gayan , Choudhury, Tanveer
- Date: 2015
- Type: Text , Conference paper
- Relation: IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society p. 004871-004874
- Full Text: false
- Reviewed:
- Description: A functional prototype of a friction-based object slippage detection gripper for robotic grasping and manipulation has been designed and built. Object grasping and manipulation experiments have been successfully performed to study the appropriateness of the methodology and the newly built slippage detection gripper. The main advantage of this slippage detection method is that slippage detection is an inherent capability of the sensing element, and not a derived capability like that of sensors based on vibration. This slippage detection and control strategy is simple by design and low in cost, but robust in function. It has the potential to be used in a variety of environments such as high temperatures, low temperatures and underwater. The robustness of the design makes it highly suitable for grasping and manipulating safely a large range of object weights and sizes.
Cyclic production for robotic cells served by multi-function robots with resumable processing regime
- Authors: Foumani, Mehdi , Ibrahim, Yousef , Gunawan, Indra
- Date: 2013
- Type: Text , Conference paper
- Relation: 2013 IEEE International Conference on Industrial Engineering and Engineering Management, Bangkok, (10 - 13 December 2013) p. 551-555
- Full Text: false
- Reviewed:
- Description: This paper addresses the problem of finding the optimal robot move cycle to minimise the cycle time of two-machine cells. The earlier robot's function was mainly moving parts between machines in a manufacturing process. We lift this assumption on robot tasks and assumed a special robot, namely multi-function, which performs a unique operation in transit. This robot starts performing this operation after unloading a part from input buffer and finishes it before loading the part to the output buffer. The processing mode on robot is “stop resume”. Thus, regardless of the gap interrupts during the operation, the robot continues processing on part when it is reloaded to the robot without any loss in time. The focus of this study is on one-unit cycles since they are very popular in industry. The cycle time of two possible one-unit cycles is obtained, and the optimality condition of them is determined.
Scheduling rotationally arranged robotic cells served by a multi-function robot
- Authors: Foumani, Mehdi , Gunawan, Indra , Ibrahim, Yousef
- Date: 2014
- Type: Text , Journal article
- Relation: International Journal of Production Research Vol. 52, no. 13 (2014), p. 4037-4058
- Full Text: false
- Reviewed:
- Description: Automated material handling systems are usually characterised by robotic cells that result in the improvement of the production rate. The main purpose of this research is to study the scheduling of a rotationally arranged robotic cell with the multi-function robot (MFR). This special class of industrial robot is able not only to transfer the part between two adjacent processing stages but also to perform a special operation in transit. Considering MFR for material handling and operation, the objective function of the research here is the maximisation of production rate, or equivalently the minimization of the steady-state cycle time for identical part production. This problem is modelled as a travelling salesman problem to give computational benefits with respect to the existing solution methods. Then, the lower bound for the cycle time is deduced in order to measure the productivity gain of two practical production permutations, namely uphill and downhill permutations. As a design problem, a preliminary analysis initially identifies the regions where the productivity gain of a regular multi-function robotic cell is more than that of the corresponding single-function robotic cell for both small- and large-scale cells. The conclusion shows the suggested topics for future research.
- Description: C1
Quantifying the impact of using multi-function robots on productivity of rotationally arranged robotic cells
- Authors: Foumani, Mehdi , Ibrahim, Yousef , Gunawan, Indra
- Date: 2015
- Type: Text , Conference paper
- Relation: 2013 IEEE International Conference on Industrial Engineering and Engineering Management , Bangkok, 2013 p. 1194-1198
- Full Text: false
- Reviewed:
- Description: This paper investigates the scheduling of a rotationally arranged robotic cell with the Multi-Function Robot (MFR). The earlier known robotic study in this area assumed that the robot only moves the part between machines. We lift this assumption on robot tasks and assumed a special class of robots which is also able to perform a special operation in transit. The aim is to find a minimum cycle time for identical part production. Considering additive and constant travel-time, the distance between any two machines is varying or constant based on the robot acceleration/deceleration for incompact and compact cells. The lower bound of the cycle time is deduced to evaluate the optimality of two practical permutations namely uphill and downhill. It also identifies the regions where using a Multi-Function Robotic Cell (MFRC) is more economical than a Single-Function Robotic Cell (SFRC).
Cyclic scheduling in small-scale robotic cells served by a multi-function robot
- Authors: Foumani, Mehdi , Ibrahim, Yousef , Gunawan, Indra
- Date: 2013
- Type: Text , Conference proceedings
- Relation: IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society, Nov. 2013, Vienna, Austria pp.4362-4367
- Full Text: false
- Reviewed:
- Description: The industrial robot is one of the popular devices used in fully automatic production lines as material handling tool. A consequential problem is finding a cyclic robot movement which gives the maximum cell output in mass production environments. The Robotic Cell Scheduling Problem (RCSP) is predominantly separated into two different problems: Single-Function Robotic Cell (SFRC) and Multi-Function Robotic Cell (MFRC) scheduling problem. These problems are layout-oriented and operation-oriented, respectively. Literature concerning with former case considered a robotic system served by a transporting robot performing a single task. This kind of transporting robot is usually called Single-Function Robot (SFR). For the latter case, the robotic system served by a Multi-Function Robot (MFR) which simultaneously perform an arbitrary task in addition to parts transportation task. Giving a real-life example of MFRs, the use of a class of grippers performing in-process control is significantly increased in industry. The grippers, install at the end of MFR arm, can perform quality control tasks (e.g. accurately measure diameters) while part is carried to next machine. Figure 1 shows an example of these grippers used for measuring the diameter of crankshaft [1]. The measuring heads are integrated into the automation by adding gages and crankshaft locating features to MFR using in these lines. Also, there is a special kind of MFR, namely SDA10, which is suitable for assembly and part transfer in production lines especially if fixturing is costly [2]. Thus, it is crucial to undertake a comprehensive research onto effect of MFRs on production rate.
Scheduling dual gripper robotic cells with a hub machine
- Authors: Foumani, Mehdi , Ibrahim, Yousef , Gunawan, Indra
- Date: 2013
- Type: Text , Conference proceedings
- Relation: Industrial Electronics (ISIE), 2013 IEEE International Symposium, Taipei, Taiwan, 28th-31st May 2013 p1-6
- Full Text: false
- Reviewed:
- Description: This paper introduces a new methodology to optimise the cycle time of dual-gripper robotic workcells. The workcell under study is composed of a group of m production machines. In order to produce a completed part, a chain of m-1 secondary operations are performed by m-1 different machines, and a hub machine is alternately visited for m primary operations. Indeed, parts must reenter the hub machine after any one of secondary operations. Those types of robotics workcells are used for high capacity production such as in photolithography manufacturing, These cells are cluster tools for semiconductor manufacturing where a wafer visits a processing stage several times for the atomic layer deposition (ALD) processes. For electroplating lines, these cells are also common in practice where there is a multifunction production stage that is visited by parts over once. This optimisation methodology is limited to the dual-gripper robotic cells, where identical parts are produced and these parts completely follow a similar sequence. The lower bound of cycle time for such dual-gripper robotic cells is obtained by finding the cycle time of all related robot move cycles, and subsequently optimal robot task sequence, which is a two-unit cycle, is determined.
Quantifying the impact of using multi-function robots on productivity of rotationally arranged robotic cells
- Authors: Foumani, Mehdi , Ibrahim, Yousef , Gunawan, Indra
- Date: 2013
- Type: Text , Conference proceedings
- Relation: Industrial Engineering and Engineering Management (IEEM), 2013 IEEE International Conference , Bangkok, Thailand, 10-13 Dec. 2013 p 1194-1198
- Full Text: false
- Reviewed:
- Description: Generally, an industrial robot is named the Single-Function Robot (SFR) if it is only able to perform one task like material handling. However, a Multi-Function Robot (MFR) predominantly performs two tasks concurrently: material handling and a special operation. This type of recent robot with this ability can raise production rate. A robot equipped by a special kind of gripper namely Grip-Gage-Go is a real-life applications of MFRs. This gripper makes MFR competent to measure the diameter of the part in transit. These MFRs are widely employed in the inspection of automotive products including crankshaft, gears, and engine valves [1]
Notes on feasibility and optimality conditions of small-scale multifunction robotic cell scheduling problems with pickup restrictions
- Authors: Foumani, Mehdi , Gunawan, Indra , Smith-Miles, Kate , Ibrahim, Yousef
- Date: 2015
- Type: Text , Journal article
- Relation: IEEE Transactions on Industrial Informatics Vol. 11, no. 3 (2015), p. 821-829
- Full Text: false
- Reviewed:
- Description: Optimization of robotic workcells is a growing concern in automated manufacturing systems. This study develops a methodology to maximize the production rate of a multifunction robot (MFR) operating within a rotationally arranged robotic cell. An MFR is able to perform additional special operations while in transit between transferring parts from adjacent processing stages. Considering the free-pickup scenario, the cycle time formulas are initially developed for small-scale cells where an MFR interacts with either two or three machines. A methodology for finding the optimality regions of all possible permutations is presented. The results are then extended to the no-wait pickup scenario in which all parts must be processed from the input hopper to the output hopper, without any interruption either on or between machines. This analysis enables insightful evaluation of the productivity improvements of MFRs in real-life robotized workcells. ©2014 IEEE.
Performance of WiMAX Security Algorithm (The Comparative Study of RSA Encryption Algorithm with ECC Encryption Algorithm)
- Authors: Habib, Masood , Mehmood, Tahir , Ullah, Fasee , Ibrahim, Yousef
- Date: 2009
- Type: Text , Conference paper
- Relation: Computer Technology and Development, 2009. ICCTD '09. International Conference on
- Full Text: false
- Reviewed:
- Description: IEEE 802.16, known as WiMax, is at the top of communication technology drive because it is gaining a great position in the next generation of wireless networks. Due to the evolution of new technologies wireless is not secured as like others networking technologies. A lot of security concerns are needed to secure a wireless network. By keeping in mind the importance of security, the WiMax working groups has designed several security mechanisms to provide protection against unauthorized access and malicious threats, but still facing a lot of challenging situations. An authentication and authorization model provides protection for a network or technology and protects its resources from unauthorized use. This paper examines the threats which are associated with MAC layer and physical layer of WiMax and also proposes some enhancements to the existing model for improving the performance of the encryption algorithm. The paper proposes some techniques in the existing model to enhance its functionality and capability. Simulation is done using Qualnet4.5 simulation tool and the results are given at the end.
Fuzzy logic and gradient descent-based optimal adaptive robust controller with inverted pendulum verification
- Authors: Hadipour Lakmesari, S. , Mahmoodabadi, M. , Ibrahim, Yousef
- Date: 2021
- Type: Text , Journal article
- Relation: Chaos, Solitons and Fractals Vol. 151, no. (2021), p.
- Full Text: false
- Reviewed:
- Description: This paper develops an adaptive robust combination of feedback linearization (FL) and sliding mode controller (SMC) based on fuzzy rules and gradient descent laws. The new suggested control algorithm is tested to stabilize a fourth-order under-actuated nonlinear inverted pendulum system. More precisely, the reliable feedback linearization approach and the robust SMC controller are combined to design a stable control effort. In order to enhance the performance of the suggested controller, an adaptation technique as long as fuzzy rules are applied to update the control gains and the boundary layer parameter. Then, a novel evolutionary algorithm termed multi-objective ant lion optimizer (MOALO) is implemented to determine the control coefficients. The analysis and results conducted on the inverted pendulum system demonstrate the desired performance of the proposed control scheme by providing an optimal smooth control input, suitable tracking performance, and proper time responses. © 2021 Elsevier Ltd
Optimal fuzzy proportional-integral-derivative control for a class of fourth-order nonlinear systems using imperialist competitive algorithms
- Authors: Hadipour, Lakmesari, S. , Safipour, Z. , Mahmoodabadi, Mohammad Javad , Ibrahim, Yousef , Mobayen, Saleh
- Date: 2022
- Type: Text , Journal article
- Relation: Complexity Vol. 2022, no. (2022), p. 1-13
- Full Text:
- Reviewed:
- Description: The proportional integral derivative (PID) controller has gained wide acceptance and use as the most useful control approach in the industry. However, the PID controller lacks robustness to uncertainties and stability under disturbances. To address this problem, this paper proposes an optimal fuzzy-PID technique for a two-degree-of-freedom cart-pole system. Fuzzy rules can be combined with controllers such as PID to tune their coefficients and allow the controller to deliver substantially improved performance. To achieve this, the fuzzy logic method is applied in conjunction with the PID approach to provide essential control inputs and improve the control algorithm efficiency. The achieved control gains are then optimized via the imperialist competitive algorithm. Consequently, the objective function for the cart-pole system is regarded as the summation of the displacement error of the cart, the angular error of the pole, and the control force. This control concept has been tested via simulation and experimental validations. Obtained results are presented to confirm the accuracy and efficiency of the suggested method. © 2022 S. Hadipour Lakmesari et al.