| The present master's thesis is commissioned for the Harbin Institute of Technology with the aim to develop new design of control system for electromagnetic proportional valve.Electromagnetic valves are similar in principle of operation with solenoids and coils,all these devices in process of actuating follow the electromagnetic laws.Solenoid coils and valves are integral parts of any switching systems,specially,when the flow of fluid or air is supposed to be controlled.In some applications,it may be necessary to realize quick initial solenoid closure and soft switching to provide power savings.In these kinds of cases it is necessary to apply drivers,in other words,devices which are capable of controlling solenoid's response to the signal.The idea of this research is to develop such a control system for solenoids,that allows to reduce the response time of electromagnetic devices to less than 25 ms,and limit the current oscillations in steady state.These directions for study were chosen to minimize power consumption and provide more efficiency operation of solenoid coils/valves.Content of this master's thesis is directed to: collecting data and information processing about solenoid valves and methods of controlling;creating virtual and mathematical models for testing and analyzing,based on the parameters that influence on the current in a solenoid;finding and generating an appropriate method of controlling;creating PCB design.The object of this paper is an important component of any system related with the flow of fluid or air,specially,when the fluid or air is supposed to be controlled.Completed research will be able to contribute fresh simplified methods of getting the high efficiency control system for electromagnetic proportional valve. |
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