Application of fuzzy logic for a gap-width controller used in electro-discharge machining

Mysiński, Wojciech; Cudak, Adam

doi:10.1109/icses.2016.7593848

Cited by 7 publications

(5 citation statements)

References 6 publications

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“…With the increase of the applied current value, their values also increased ( Figure 7 a,b). This tendency is consistent with the results of other studies on surface quality obtained in the EDM process [ 46 , 47 ]. It is explained by the fact that applying a higher current value results in the formation of larger erosion craters on the machined surface, as larger amounts of material are then removed during a single discharge.…”

Section: Results’ Analysis and Discussionsupporting

confidence: 93%

“…The influence of variable input factors v s and I on the WEDM cutting speed is shown in Figure 3 . According to previous research works on the EDM process, an increase in the current amplitude causes an increase in both the material removal rate and the process energy [ 25 , 46 ]. The analysis of the relationship v ( v s , I ) also showed that increasing the SLM laser scanning speed v s slightly increased the WEDM cutting speed v ( Figure 3 a).…”

Section: Results’ Analysis and Discussionmentioning

confidence: 99%

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Investigation and Optimization of the SLM and WEDM Processes’ Parameters for the AlSi10Mg-Sintered Part

2021

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Presented study concerns the issue of processing the AlSi10Mg aluminum alloy with a use of WEDM technology. Two types of samples tested during the experiment were previously produced in SLM and in casting processes. The aim of the research was to determine the dependence of the input parameters of SLM (laser scanning speed) and WEDM (current amplitude) processes on the performance of the WEDM process as well as on the roughness of the cut surfaces. The experiment was carried out on a specially prepared test stand, and the results’ analysis was carried out using the ANOVA (analysis of variance). A strong influence of the WEDM current on the process speed and on the Ra and Rz roughness parameters of the produced samples was found. The effect of SLM laser scanning speed was not so strong, but it tended to be uniform. On the other hand, the influence of the tested parameters on the WEDM process energy turned out to be insignificant and irregular. It was also found that for the WEDM process a sample made in SLM technology with relatively high laser scanning speed may be a better choice than the cast one. A case study was carried out to optimize the parameters of the tested processes.

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Section: Results’ Analysis and Discussionsupporting

confidence: 93%

Section: Results’ Analysis and Discussionmentioning

confidence: 99%

Investigation and Optimization of the SLM and WEDM Processes’ Parameters for the AlSi10Mg-Sintered Part

2021

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“…Below, the parameters presented in Figure 9 are characterized [ 41 , 42 , 43 ]: U on —the relevant open circuit voltage, which is the system voltage when the EDM circuit is in the open state, and the energy has been built up for discharge; U e —the discharge voltage (usually 20–30 V); I e —the maximum peak current discharging; t on —the duration of pulse time, the time required for the current to rise and fall during discharging; t off —the duration of the time interval; t d —the ignition delay time; t e —the duration of the appropriate EDD process. …”

Section: Resultsmentioning

confidence: 99%

“…Figure 8 shows the pulse time duration and the increase in LTW; a longer impulse time results in a longer electrical discharge time (arc discharges/short circuits for U = 60 V) in a single pulse. Below, the parameters presented in Figure 9 are characterized [41][42][43]:…”

Section: Influence Of Voltage the Pulse Time Duration And Current Amentioning

confidence: 99%

Investigation of the Machinability of the Inconel 718 Superalloy during the Electrical Discharge Drilling Process

Machno

2020

Materials

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The properties of the Inconel 718 superalloy are used in the manufacturing of aircraft components; its properties, including high hardness and toughness, cause machining difficulties when using the conventional method. To circumvent this, non-conventional techniques are used, among which electrical discharge machining (EDM) is a good alternative. However, the nature of removing material using the EDM process causes the thermophysical properties of Inconel 718 to hinder its machinability; thus, a more extensive analysis of the influence of these properties on the EDM process, and a machinability analysis of this material in a wider range, using more process parameters, are required. In this study, we investigated the drilling of micro-holes into the Inconel 718 superalloy using the EDM process. An experiment was conducted to evaluate the impact of five process parameters with a wide range of values (open voltage, time of the impulse, current amplitude, the inlet dielectric fluid pressure, and tube electrode rotation) on the process’s performance (drilling speed, linear tool wear, the side gap thickness, and the aspect ratio of holes). The analysis shows that the thermal conductivity of this superalloy significantly influences the effective drilling of holes. The combination of a higher current amplitude (I ≥ 3.99 A) with an extended pulse time (ton ≥ 550 µs) can provide a satisfactory hole accuracy (side gap thickness ≤ 100 µm), homogeneity of the hole entrance edge without re-solidified material, and a depth-to-diameter ratio of about 19. Obtaining a high dimensional shape accuracy of holes has an enormous effect on their usability in the structure of the components in the aviation industry.

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“…Many concepts are better defined by words than by mathematics; fuzzy logic and its expression in fuzzy sets provide a discipline that can construct better models of reality. 16,17 Fuzzy logic theory can easily capture the approximate and qualitative aspects of human knowledge and perform reasoning and has been proved to be a reliable method which has been successfully applied to the control of adaptive and nonlinear systems. 5,18–20…”

Section: Fuzzy Systems In Edmmentioning

confidence: 99%

Fuzzy control of the dual-stage feeding system consisting of a piezoelectric actuator and a linear motor for electrical discharge machining

Melhem

Simić

Lai

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part B:

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Gap width is an important factor that affects material removal rate, surface finish, and machining stability in electrical discharge machining processes. This research is to develop a novel control method for a new hybrid positioning system which consists of a linear motor and a piezoelectric actuator for high-efficiency electrical discharge machining processes. In the new system, the linear motor provides the macro feeding while the piezoelectric actuator feeds the workpiece in micro scale at high frequency. To reduce the delay caused by separate movements of the linear motor and piezoelectric actuator, a new control algorithm was developed to synchronize the movements of the motor and piezoelectric actuator. A fuzzy control system was used to control the feeding process. Piezoelectric actuator position and its speed were selected as the fuzzy inputs, while the fuzzy output was the linear motor speed. Cutting experiments were conducted, and results show that the fuzzy system is more powerful than the conventional algorithm and the new algorithm with constant motor speed. An increase in material removal rate of 1.6 times was achieved using the proposed fuzzy control algorithm.

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Application of fuzzy logic for a gap-width controller used in electro-discharge machining

Cited by 7 publications

References 6 publications

Investigation and Optimization of the SLM and WEDM Processes’ Parameters for the AlSi10Mg-Sintered Part

Investigation and Optimization of the SLM and WEDM Processes’ Parameters for the AlSi10Mg-Sintered Part

Investigation of the Machinability of the Inconel 718 Superalloy during the Electrical Discharge Drilling Process

Fuzzy control of the dual-stage feeding system consisting of a piezoelectric actuator and a linear motor for electrical discharge machining

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