INERTIAL REGULATION ACTIVE SUSPENSION SYSTEM BASED ON VEHICLE POSTURE DEVIATION, AND CONTROL METHOD THEREFOR

摘要

Disclosed are an inertial regulation active suspension system based on vehicle posture deviation, and a control method therefor. The system comprises a vehicle body (13), an inertial measurement unit (1), an electronic control unit (11), a servo controller group (12), a plurality of wheels (2, 3, 4), suspension servo actuating cylinders (5, 6, 7) corresponding to the wheels on a one-to-one basis, and displacement sensors (8, 9, 10) for measuring the distance traveled of the suspension servo actuating cylinders (5, 6, 7). The electronic control unit (11) reads posture parameters of the vehicle body (13) measured by the inertial measurement unit (1), and calculates a deviation between the postures of the vehicle body (13) at the current moment and at the previous moment, and then outputs posture control parameters to the servo controller group (12). The servo controller group (12) controls the expansion of the suspension servo actuating cylinders (5, 6, 7) according to the posture control parameters and displacement feedback values of the displacement sensors (8, 9, 10), such that the center of mass of a vehicle moves along a straight line or a curved line when the vehicle is driven on an uneven road surface, and the posture of the vehicle is kept unchanged, so that vibration of the vehicle body (13) when the vehicle is driven on a complex road surface is reduced, and the driving speed, handling stability and driving smoothness of the vehicle are thus improved.