Research On A New Adaptive Energy-Saving Pulse Generator For EDM

Pulse Generator is an important part of the EDM device, whose output characteristics directly determine the properties of EDM, and improving output has great significance for energy conservation and processing properties. Basing on analyzing working principle, the tactics of controlling and the advantages and disadvantages of processing properties on pulse generator home and abroad, in view of the shortcomings of inefficient use of energy and discharge current instability, combining with the results of laboratory research, an innovative design plan of a new adaptive energy-saving pulse generator for EDM is proposed.The new adaptive energy-saving pulse generator for EDM has continued the energy-saving idea to use the inductance component to replace the limiting resistor, aiming at getting constant current, new circuit structure and control mode have studied. A two-closed-loop about voltage and current was proposed: the voltage loop was used to prohibit voltage disturbance for a constant voltage and the current loop for a constant current, both them would perfect system properties.We have researched it on the structure, operating principle of the circuit and the controlling tactics and principle for adaptive current, and work out AC/DC converter for high-low voltage, power conversion devices, tactics of control and controller for processing scheme. The system can realize some functions: basic stability of circuit; the independent large adjustment of pulse width, pulse interval and discharging circuit; improving greatly utilization ratio of power.PCB has been design for the circuit, including layout design, wiring design and anti-interference design for the components. By using simulating implement box of Simulink in Matlab, a dynamic model of system was building, and simulation analysis has been realized, and systematic feasibility has been proved, and we also made optimization design so that the cycle of design has been shorten.The digital design based on the computer has been made for the system, some functions have been realized, for example, data collect, supervisory control, data memory analysis, digital controller of current closed cycle and the digital control processing sequence and so on.Experiment results: discharging current of the power source is stable and energy conservation is very effective.