Author
Yahya Azli
Bio: Yahya Azli is an academic researcher. The author has contributed to research in topics: Electrical discharge machining & Machining. The author has an hindex of 1, co-authored 1 publications receiving 4 citations.
Papers
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01 Dec 2011
5 citations
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TL;DR: Simulation results verify the capabilities and effectiveness of the DE algorithm to search the best configuration of PID gain to maintain the electrode position and identify suitable gain parameters for servo actuator system.
Abstract: PID controller of servo control system maintains the gap between Electrode and workpiece in Electrical Discharge Machining (EDM). Capability of the controller is significant since machining process is a stochastic phenomenon and physical behaviour of the discharge is unpredictable. Therefore, a Proportional Integral Derivative (PID) controller using Differential Evolution (DE) algorithm is designed and applied to an EDM servo actuator system in order to find suitable gain parameters. Simulation results verify the capabilities and effectiveness of the DE algorithm to search the best configuration of PID gain to maintain the electrode position.
12 citations
TL;DR: In this paper, a model of pulsed electrical discharge machining using RL circuit is presented, where the circuit schematic of transistor pulse power generator has been designed using electrical model in Matlab Simulink software to identify the profile of voltage and current.
Abstract: This article presents a model of pulsed Electrical Discharge Machining (EDM) using RL circuit. There are several mathematical models have been successfully developed based on the initial, ignition and discharge phase of current and voltage gap. According to these models, the circuit schematic of transistor pulse power generator has been designed using electrical model in Matlab Simulink software to identify the profile of voltage and current during machining process. Then, the simulation results are compared with the experimental results.
7 citations
TL;DR: In this paper, an ultracapacitor bank was added to the main power supply circuit for EDM machines to improve the gap voltage and gap current, and the control feedback of this research was designed to make sure that the current on DC bus is maintained at current setting during the machining processes.
Abstract: Electrical Discharge Machining (EDM) is a advanced machine that can control electrical spark to erode metal on the workpiece. In manufacturing, EDM is used on hard material parts that are extremely difficult to machine by conventional machining processes. EDM system consists of a shaped tool and the work piece, which are connected to a power supply and placed in a dielectric fluid. EDM pulse power generator applies voltage and current pulses between the electrode and workpiece to generate sparks through the gap. To obtain the optimum metarial removal rate (MRR), a good alternative is to improve the gap voltage and gap current. A proposed solution to these issue is combining ultracapacitor bank to the main power supply circuit for EDM machines. The control feedback of this research is designed to make sure that the current on DC bus is maintained at current setting during the machining processes.
3 citations
20 Aug 2014
TL;DR: In this paper, a model of pulses in electrical discharge machining (EDM) system is presented, which is based on the initial, ignition and discharge phase of current and voltage gap.
Abstract: This article presents a model of pulses inElectrical Discharge Machining (EDM) system There areseveral mathematical models have been successfully developedbased on the initial, ignition and discharge phase of currentand voltage gap According to these models, the circuitschematic of transistor pulse power generator has beendesigned using electrical model in Matlab Simulink software toidentify the profile of voltage and current during machiningprocess Then, the simulation results are compared withexperimental results
1 citations
01 Jul 2023