A Piezoelectric-Electromagnetic Composite Energy Feed Active Mount and Its Control Method

Abstract

The invention discloses a piezoelectric-electromagnetic composite energy-feeding active mount, comprising: an active hydraulic mount body and an integrated control circuit; the hydraulic mount body includes connecting bolts, a rubber main spring, a metal shell, a metal base, and an upper inertial channel Body, lower inertia channel body, decoupling membrane, rubber bottom membrane, throttle plate, electromagnetic actuator, electromagnetic shielding net and energy feeding system; the energy feeding system includes the first piezoelectric energy feeding system, the second piezoelectric energy feeding system and electromagnetic energy feed system. The first piezoelectric energy feeding mechanism consists of a compression nut, an upper composite piezoelectric sheet, a substrate, a lower composite piezoelectric sheet, connecting bolts and a protective shell, and is a dual crystal cantilever piezoelectric energy feeding structure; The electric energy feeding mechanism includes a piezoelectric cylinder made of composite materials and a force transmission block; the electromagnetic energy feeding mechanism includes a permanent magnet, a silicon steel sheet, an exciting coil and a sealed top cover. The invention also discloses a control method for the piezoelectric-electromagnetic compound energy-feeding active mount.

Description

technical field [0001] The invention relates to the technical field of vibration isolation of automobile powertrain mounts, in particular to a piezoelectric-electromagnetic composite energy-feed active mount and a control method thereof. Background technique [0002] With the continuous improvement of the road traffic environment and the development of cars in the direction of high torque and light weight, the proportion of vibration and noise generated by the engine in the vibration and noise of the whole vehicle has greatly increased, and engine vibration isolation technology has attracted widespread attention. Rubber mounts and hydraulic mounts can isolate the vibration and noise of the engine from being transmitted to the interior of the vehicle to a certain extent, but due to the characteristics of multiple vibration sources, wide frequency bands, and complex shapes of the engine, the traditional passive mounts have single stiffness and damping characteristics, which can...

AI Technical Summary

Problems solved by technology

However, since the active mount requires real-time output as power, the energy consumption is relatively large, which is incompatible with the requirement of energy saving

However, the existing energy-saving mounts often have limited energy-saving effects due to their simple and single energy-saving mechanism and low vibration energy conversion rate, which cannot meet the needs of active mounts.

These drawbacks limit the development of energy-saving active mounts

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