Dynamic Mathematical Model for Low Power Electrical Discharge Machining Applications

Dehghani, Dana; Yahya, Azli; Khamis, Nor Hisham Haji; Alzaidi, Ali Idham

doi:10.1166/jolpe.2019.1588

Cited by 2 publications

(1 citation statement)

References 19 publications

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“…Modern analytical and semi-analytical methods not only describe the wear of the workpiece but also the wear of the tool for one or many craters [183,184]. The primary direction of analytical methods involves mathematically describing individual phenomena of the EDM process depending on the parameters of the technological process [48,119,122,183,184,186]. Regression analysis is most often used for this purpose [117,167,183].…”

Section: Mathematical Description Of the Edm Process And Numerical Si...mentioning

confidence: 99%

Recent Trends and Developments in the Electrical Discharge Machining Industry: A Review

Kamenskikh,

Muratov,

Shlykov

et al. 2023

JMMP

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Electrical discharge machining (EDM) is a highly precise technology that not only facilitates the machining of components into desired shapes but also enables the alteration of the physical and chemical properties of workpieces. The complexity of the process is due to a number of regulating factors such as the material of the workpiece and tools, dielectric medium, and other process parameters. Based on the material type, electrode shape, and process configuration, various shapes and degrees of accuracy can be generated. The study of erosion is based on research into processing techniques, which are the primary tools for using EDM. Empirical knowledge with subsequent optimization of technological parameters is one of the ways to obtain the required surface quality of the workpiece with defect minimization, as well as mathematical and numerical modeling of the EDM process. This article critically examines all key aspects of EDM, reflecting both the early foundations of electrical erosion and the current state of the industry, noting the current trends towards the transition of EDM to the 5.0 industry zone in terms of safety and minimizing the impact of the process on the environment.

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Section: Mathematical Description Of the Edm Process And Numerical Si...mentioning

confidence: 99%

Recent Trends and Developments in the Electrical Discharge Machining Industry: A Review

Kamenskikh,

Muratov,

Shlykov

et al. 2023

JMMP

View full text Add to dashboard Cite

show abstract

Design of Real-Time Extremum-Seeking Controller-Based Modelling for Optimizing MRR in Low Power EDM

et al. 2023

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Electric discharge machining (EDM) is one of the non-conventional machining processes that supports machining for high-strength and wear-resistant materials. It is a challenging task to select the process parameters in real-time to maximize the material removal rate since real-time process trials are expensive and the EDM process is stochastic. For the ease of finding process parameters, a modelling of the EDM process is proposed. Due to the non-linear relationship between the material removal rate (MRR) and discharge time, a model-free adaptive extremum-seeking controller (ESC) is proposed in the feedback path of the EDM process for finding an optimal value of the discharge time at which the maximum material removal rate can be achieved. The results of the model show a performance that is closer to the actual process by choosing steel workpieces and copper electrodes. The proposed model offers a lower error rate when compared with actual experimental process data. When compared to manual searching for an optimal point, extreme seeking online searching performed better as per the experimental results. It was observed that the experimental validation also proved that the ESC can produce a large MRR by tracking the extremum control. The present study has been limited to only the MRR, but it is also possible to implement such algorithms for more than one response parameter optimization in future studies. In such cases the performance measures of the process could be further enhanced, which could be used for a real-time complex die- and mold-making process using EDM.

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Dynamic Mathematical Model for Low Power Electrical Discharge Machining Applications

Cited by 2 publications

References 19 publications

Recent Trends and Developments in the Electrical Discharge Machining Industry: A Review

Recent Trends and Developments in the Electrical Discharge Machining Industry: A Review

Design of Real-Time Extremum-Seeking Controller-Based Modelling for Optimizing MRR in Low Power EDM

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