Electro-hydraulic integrated type self-energy supplying active suspension actuator and control method thereof

Abstract

The invention discloses an electro-hydraulic integrated type self-energy supplying active suspension actuator which comprises an actuator main body and an actuator controller, wherein the actuator main body comprises a piston barrel, a piston, an upper piston rod, a lower piston rod, an upper lug ring, a lower lug ring, an upper piston barrel end cover, a lower piston barrel end cover, an upper sleeve, an upper guide base, an upper oil seal, a first sealing ring, a lower sleeve, a lower guide base, a lower oil seal, a second sealing ring and a hydraulic oil; a check valve set, a hydraulic motor module and a brushless direct current motor are embedded into the piston; the check valve set comprises a flow valve, a compression valve, a compensation valve and a rebound valve; the hydraulic motor module comprises a hydraulic motor shell, a shaft sleeve, a first gear, a second gear and a third gear. The invention also discloses a control method for the electro-hydraulic integrated type self-energy supplying active suspension actuator. The electro-hydraulic integrated type self-energy supplying active suspension actuator is novel and reasonable in design, convenient in realization and low in cost; the suspension actuator can be under the optimal vibration attenuation state; the driving smoothness and the operation stability of the vehicle can be more effectively promoted.

Description

technical field [0001] The invention belongs to the technical field of automobile suspension systems, and in particular relates to a hydraulic-electric integrated self-powered active suspension actuator and a control method thereof. Background technique [0002] During the driving process of the vehicle, the relative displacement between the sprung mass and the unsprung mass of the vehicle will be caused due to the unevenness of the road surface, which will cause the vehicle to vibrate. The suspension system is a key component that determines the dynamic performance of the vehicle, and it determines the ride comfort and ride comfort of the vehicle. At present, vehicle suspension systems mainly include passive suspension, semi-active suspension and active suspension. Because the parameters of the traditional passive suspension such as stiffness and damping are fixed, the vibration damping effect of the car is greatly limited, and the suspension vibration damping performance ...

AI Technical Summary

Problems solved by technology

The liquid-electric energy-feeding shock absorber can only work in the energy feedback mode. By adjusting the current of the generator, the electromagnetic resistance torque of the generator is adjusted, thereby adjusting the damping force of the entire suspension system. What it essentially accomplishes is In the control process of semi-active suspension, because there is no output of active control force, the shock absorption effect and the design of control law are limited, and it will also affect the ride comfort of the vehicle and the improvement of handling stability.

Images