Global controllable duplex semi-active vehicle suspension system

Abstract

The invention provides a global controllable duplex semi-active vehicle suspension system which comprises a guide mechanism and a four-quadrant semi-active damping adjustable actuator, the four-quadrant semi-active damping adjustable actuator comprises a damping mechanism and a duplex mechanism, and the duplex mechanism comprises a first rack, a second rack and a reversing gear. The reversing gearis located between the first rack and the second rack and engaged with the first rack and the second rack. The damping mechanism comprises two damped and adjustable shock absorbers, the top ends of shock absorber bodies of the two shock absorbers are jointly installed on the same tower top, and the bottom ends of piston rods of the two shock absorbers are connected with the top ends of the two racks respectively; the bottom end of the first rack is hinged to a steering horn of the guide mechanism, and the tower top of the damping mechanism is connected with a vehicle body. And a gear shaft ofthe reversing gear is connected with the frame or the vehicle body through a connecting rod. The global controllable duplex semi-active vehicle suspension system has the advantages that the semi-active vehicle suspension system has a global control range and is low in energy consumption and high in reliability.

Description

technical field [0001] The invention relates to the field of vehicle suspension system and vibration control, and more specifically relates to a globally controllable double-connected semi-active vehicle suspension system. Background technique [0002] As the connection between the car body and the road surface, the suspension system is closely related to the car's handling stability, ride comfort and safety. Since the French first used a single leaf spring on the wheel to make a formal carriage suspension in the 18th century, humans have been researching and innovating on the key component between the wheel and the body / frame - the suspension. However, with the development of automobile technology so far, although there are mature suspension structures such as McPherson suspension, single / double wishbone independent suspension, single / double trailing arm independent suspension, etc., the automobile suspension system is in the configuration There have been no new breakthrou...

AI Technical Summary

Problems solved by technology

However, since typical stiffness / damping adjustable shock absorbers and adjustable inerters such as air springs, electric / magneto-rheological shock absorbers, energy-feeding shock absorbers, and solenoid valve shock absorbers cannot The negative control force is also output (that is, the active actuator can realize the mechanical control within the four-quadrant range in the "damping force-excitation speed" diagram, while the semi-active actuator can only realize the fourth quadrant in the "damping force-excitation speed" diagram. Mechanical control in the first and third quadrants, there is a large gap between the performance of the semi-active suspension system and the performance of the active suspension system in the full frequency domain

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