Repul sive force type electromagnetic shift executing system

Abstract

The invention relates to a repulsion-type electromagnetic displacement actuator, adopting a principle of opposite magnets repulsing mutually to make a repulsion-type electromagnetic actuator, making the same pole tips of the magnetic filed generated by fixed helix tube in the actuator after electrified and the magnetic filed of an armature are opposite so as to generate a repulsion force to push the armature to move, balancing compression return spring or other balance return devices, thus primely solving the problem of nonlinear resultant force displacement property, and strengthening its control accuracy and stability. The material of the moving armature is a soft-magnetic material, both realizing excellent property of proportional electromagnet and avoiding the problems of process complexity, reliability reduction and effective travel reduction of the proportional electromagnet, etc. And it remedies the disadvantage of unstability and control difficulty caused by a system composed of ordinary electromagnet and spring.

Description

technical field [0001] The invention relates to a repulsion type electromagnetic displacement actuator, which belongs to the field of machinery and electronics, and is especially applied in the field of position control. Background technique [0002] There are many ways to achieve position control, among which proportional electromagnets are widely used in the field of automatic control of industrial equipment. For example, electromagnetic displacement actuators used in modern diesel engine electronic control systems are used to control fuel injection. Due to the characteristics of the mixing in the cylinder of the diesel engine, there is a high requirement on the accuracy of the cycle injection quantity and injection timing, and the fuel injection of the diesel engine has the characteristics of high pressure, high frequency, and pulsation, which makes the electronic control system of the modern diesel engine used in the fuel injection control. The high technical content of...

AI Technical Summary

Problems solved by technology

[0004] In the traditional electromagnetic actuator, the principle of execution is the principle of suction, which will make it difficult to match the ordinary electromagnet and the spring, and the resultant force-displacement characteristic is nonlinear, resulting in problems such as poor control accuracy and stability, while the present invention The repulsion type electromagnet actuator is made by adopting the principle of opposite repulsion of magnets, so that the magnetic field generated by the fixed solenoid in the electromagnetic actuator is opposite to the magnetic field of the armature at the same extremes, thereby generating repulsion, thereby driving the armature to move. Compress the return spring or other balance return device to achieve balance, which solves the problem of non-linearity of the resultant force displacement characteristics, thereby enhancing its control accuracy and stability

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