Moving coil type actuator for active suspension of engine

Abstract

The invention discloses a moving coil type actuator for the active suspension of an engine. The moving coil type actuator comprises an end cover, two leaf springs, a permanent magnet, a pushing rod, acoil, a coil bracket, an outer keeper, an inner keeper, a fixed-distance tube, and a fastening sleeve, the outer keeper is arranged on the outer side of the inner keeper, the inner keeper and the outer keeper are mounted on the end cover, a groove is formed in the outer side face of the inner keeper, the permanent magnet is fixedly mounted in the groove of the inner keeper, the fixed-distance tube is mounted between the two leaf springs, and the two leaf springs are connected with the top end and the bottom end of the fixed-distance tube; and the coil is arranged between the outer keeper andthe inner keeper, the coil is connected with the coil bracket, and the coil bracket is fixed on the fixed-distance tube through the fastening sleeve. The moving coil type actuator can effectively solve the problem of excessive mass of a rotor, the response speed of the actuator to the control signal in the actuating process and the stiffness linearity within the excitation amplitude range of the engine are improved, the heat emission capacity of a shell of the actuator is improved, and the service life of the shell of the actuator is prolonged.

Description

technical field [0001] The invention relates to the technical field of engines. Background technique [0002] At present, with the increasing use of hybrid electric vehicles, the characteristics of frequent engine start and stop and high speed increase rate pose greater challenges to the comfort of the car. And in order to improve fuel economy, cylinder deactivation technology is used in some high-end cars, one or more cylinders of the engine are closed, which not only increases the diversity of vibration orders, but also aggravates the uneven stress on the engine, resulting in many uneven Vibration for comfort. According to the real-time working conditions of the engine, the active mount can collect the vibration signal by the sensor, and after the control calculation, the controller issues an instruction to make the actuator generate the exciting force and the vibration from the engine to cancel each other, thereby inhibiting the vibration from being transmitted to the bo...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a moving coil actuator used for active mounting of an engine, which solves the problem that the existing actuator has too much mass of the mover and the resonance frequency is lower than the maximum excitation frequency of the engine, which causes the active mounting to reduce the vibration in the high frequency range. The problem of poor vibration effect

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