Energy feedback type self-sensing magnetorheological damper

Abstract

The invention discloses an energy feedback type self-sensing magnetorheological damper. The energy feedback type self-sensing magnetorheological damper is characterized by comprising a pure shearing type magnetorheological damper body, an energy feedback mechanism used for converting mechanical energy into electric energy, and a rotating speed sensor, the pure shearing type magnetorheological damper body converts linear movement of a linear magnetorheological damper piston rod into rotational movement by means of a ball screw pair mechanism, the shearing mode which is one of the working modes of magnetorheological liquid is effectively utilized, and stepless damping force controllability of the magnetorheological damper is achieved by arranging a shearing disc, a shearing ring and a corresponding electromagnetic coil. According to the energy feedback type self-sensing magnetorheological damper, by means of the shearing mode of the magnetorheological liquid, the range of dynamic damping ratios is effectively widened, and a more effective control range is provided for a high-speed impact and low-speed vibration control system; both the electric energy feedback performance and movement state self-sensing performance are realized, energy supply of a semi-active magnetorheological damper and the control system of the semi-active magnetorheological damper is achieved, and the problems, related to installation space, system weight, cost and reliability, caused by additional installation of a state feedback sensor are solved.

Description

technical field [0001] The invention relates to a magneto-rheological shock absorber with electric energy feedback performance and motion state self-perception performance, in particular to a magneto-rheological shock absorber suitable for bicycles, motorcycles, automobiles, trucks, ships, trains, airplanes, bridges, buildings, sports facilities and other Energy-feeding self-sensing magneto-rheological shock absorber for vibration / shock control system. Background technique [0002] Magnetorheological fluids (Magnetorheological fluids) produce magnetorheological effects under the action of a magnetic field, and the entire process has reversible and fast (ms level) characteristics, which are called smart materials. The magnetorheological fluid is mainly composed of carrier fluid and ferromagnetic particles. It is a suspension of ferromagnetic particles. When there is no magnetic field, the suspended ferromagnetic particles in the magnetorheological fluid are arranged in a diso...

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Problems solved by technology

[0007] In order to avoid the shortcomings of the prior art, the present invention provides an energy-feeding type self-sensing magneto-rheological shock absorber with energy-feeding performance and speed self-sensing performance. The utilization rate of magnetorheological fluid in the shock absorber is low, the range of controllable damping force and dynamic damping ratio is limited, and the energy conversion mechanism and state feedback sensor are too large. Under the premise of the size, excitation current and energy consumption of the magnetorheological shock absorber, a magnetorheological shock absorber with high utilization rate of magnetorheological fluid, electric energy feedback and self-sensing motion state is realized

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