Intelligent control system for electromagnetic valve and method of intelligent control system

Abstract

The invention discloses an intelligent control system for an electromagnetic valve and a method of the intelligent control system. The system comprises a control signal generator, a high pressure source, a constant pressure source, a negative pressure source, a switch, a signal trigger, a current detector, an oil tank, the electromagnetic valve, pressure sensors, a calculator and a signal inverter, wherein the pressure sensors at an oil inlet and a working opening of the electromagnetic valve can be used for detecting oil pressure at any time and feeding the oil pressure back to the calculator; the calculator is used for automatically calculating start current, shutoff current and the size of the constant pressure source according to the data of the electromagnetic valve tested in earlier stage; the pressure sensors and the calculator are matched with each other in use; during a control process, the intelligent control system is capable of realizing intelligent regulation according to a pressure value measured by the sensors even the working condition of the electromagnetic valve has changes, so that the electromagnetic valve has a self-adaption capability to the working condition. By adopting the high pressure source for stimulation, adopting the constant pressure source for reducing current and adopting the negative pressure source for rapid unloading, the intelligent control system is capable of effectively reducing the delay time when the electromagnetic valve is opened or closed and improving the dynamic characteristics.

Description

technical field [0001] The invention relates to an electromagnetic valve intelligent control system and a method thereof. Background technique [0002] In the study of solenoid valves, the number of ampere turns and the working air gap have the greatest influence on the electromagnetic force of the electromagnet. Ampere-turns is the product of the number of turns of the coil and the current in the single-turn coil. When the magnetic flux is not saturated, the greater the ampere-turns, the greater the electromagnetic force; the smaller the working air gap, the greater the electromagnetic force. Since the solenoid valve is often opened when the working air gap in the electromagnet is the largest, and when it is closed is often the time when the working air gap in the electromagnet is the smallest, so the opening current is larger than the closing current. [0003] At present, most solenoid valves in the hydraulic field are controlled by PWM, that is, a high voltage is input ...

AI Technical Summary

Problems solved by technology

Changes in the current value required for opening and closing will also inevitably lead to changes in the lag time, so under the conventional PWM control method, the dynamic performance of the valve is easily affected by the working conditions, and cannot provide stable and strong anti-interference performance

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