Piezoelectric-electromagnetic composite energy feedback active suspension and control method thereof

Abstract

The invention discloses a piezoelectric electromagnetic composite energy feedback active suspension which comprises an active hydraulic suspension body and an integrated control loop. The hydraulic suspension body comprises a connecting bolt, a rubber main spring, a metal shell, a metal base, an upper inertia channel body, a lower inertia channel body, a decoupling film, a rubber bottom film, a throttling disc, an electromagnetic actuator, an electromagnetic shielding net and an energy feedback system. The energy feedback system comprises a first piezoelectric energy feedback system, a secondpiezoelectric energy feedback system and an electromagnetic energy feedback system. The first piezoelectric energy feedback mechanism is composed of a compression nut, an upper-layer composite material piezoelectric patch, a substrate, a lower-layer composite material piezoelectric patch, a connecting bolt and a protective shell and is of a bicrystal cantilever type piezoelectric energy feedback structure. The second piezoelectric energy feedback mechanism comprises a composite material piezoelectric cylinder and a force transmission pressing block; the electromagnetic energy feedback mechanism comprises a permanent magnet, a silicon steel sheet, an excitation coil and a sealing top cover. The invention further discloses a control method of the piezoelectric- electromagnetic composite energy feedback active suspension.

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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