The Performance Analysis Of Electrorheological-Valve And Design Of NC Power Source With High Voltage

During the research on ERF (electrorheological fluids) applied to hydraulic technology, the working performance analysis of ER-valve is mostly based on the information that is got from rotary shear measurements. There are few reports about ER-valve analysis under practical large flow model using ERF as actuating medium. And maybe because the ER-valve has not practicality at present, reports about control signal source of ER-valve-high-voltage power-are fewer. Aim at problems of above-mentioned, the work performances of ER valve under practical application state are analyzed and its high-voltage control power source is studied in this dissertation.The development trends of ER technology, theory of ER effect and principle of engineering application is presented. The application of ER technology in hydraulic technology is introduced in detail.The working mechanism and control method of ER valve were discussed, and its feedback control model was set up. Through analysis to the performance of ER valve under real work state using simulation and experiment, we can conclude that using ER valve as fluid control-unit would improve the response speed of system, simplify the control method and have a better controllability to actuators. Then the feasibility of ER technology applied to hydraulic control system is proved.In order to resolve the problem of fast switching on or off, intellectual control and smaller bulk of high voltage power required in ER valve, a NC high-voltage power source is designed and made using singlechip technology and high frequency switch power technology,...