Electromagnetic shock absorber with asymmetric damping characteristic and asymmetric characteristic design method

Abstract

The invention discloses an electromagnetic shock absorber with an asymmetric damping characteristic and an asymmetric characteristic design method, and belongs to the technical field of vehicle engineering. The shock absorber is composed of a gear rack mechanism, a coupler, a gearbox, a motor, a load circuit and a case. The structure is novel, and bidirectional movement of a rack and unidirectional rotation of an output shaft are realized through the gear rack mechanism comprising double overrun clutches and four gears. Through meshing transmission with the transmission ratio not equal to 1 of the two gears, the motion characteristic that the output shaft rotates unidirectionally and changes the rotating speed during bidirectional constant-speed motion input of the rack is achieved, and the asymmetric damping characteristic and the power generation characteristic of the electromagnetic shock absorber are achieved. The quantitative relation between the asymmetric coefficient of the induced electromotive force, the asymmetric coefficient of the electromagnetic damping force and the asymmetric coefficient of the equivalent damping coefficient of the electromagnetic shock absorber and the structural transmission parameters is defined, and according to the quantitative relation and the asymmetric coefficient of the electromagnetic damping force or the asymmetric coefficient of the induced electromotive force in a design target, the electromagnetic shock absorber meeting the requirements can be rapidly designed.

Description

technical field [0001] The invention belongs to the technical field of vehicle engineering, and relates to a vehicle shock absorber and its characteristic design method, in particular to an electromagnetic shock absorber with two-way asymmetrical damping characteristics utilizing electromagnetic damping characteristics and its asymmetric characteristic design method. Background technique [0002] When the vehicle is running on the road, it will inevitably be subject to various disturbances, such as: uneven road surface, braking force, acceleration and centrifugal force. Under the action of these forces, the vehicle will generate energy dissipation, part of which is consumed by the shock absorber. In recent years, research has been conducted on recovering the dissipated energy of shock absorbers, and electromagnetic shock absorbers have been developed. However, the body motor of the electromagnetic shock absorber does not have the asymmetric damping characteristics of the t...

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Problems solved by technology

However, this method limits the characteristics of the electromagnetic shock absorber to adjust the damping characteristics through the load resistance; second, the asymmetrical damping characteristic of the electromagnetic shock absorber is realized by designing an asymmetrical ball screw structure, but the structure designed by this design method is more complicated ,higher cost

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