Linear motor shock absorber used for automobile in-wheel active suspension

Abstract

The invention relates to a linear motor shock absorber used for an automobile in-wheel active suspension, and belongs to the technical field of automobile accessories. The linear motor shock absorber mainly comprises a motor shock absorber body, supports, wheels, a passive suspension spring and a passive shock absorber body. The motor shock absorber body is arranged in the wheels through the supports and comprises a peripheral magnetic insulation sleeve, end covers, a rotor, a stator and linear cylindrical slide rails. The stator comprises a cylindrical supporting shaft, annular stator magnetic conduction back iron, annular S-pole permanent magnets and N-pole permanent magnets. The rotor comprises an annular rotor iron core magnetic conductor, winding coils, Hall sensors, annular grooves and rotor teeth. The movable ring structure with the stator on the inner portion and the rotor on the outer portion is adopted for the motor shock absorber body. The rotor can slide up and down along the stator through the cylindrical slide rails. The motor shock absorber body is connected with the passive suspension spring and the passive shock absorber body in parallel, wherein the passive suspension spring and the passive shock absorber body are arranged outside the wheels. The linear motor shock absorber used for the automobile in-wheel active suspension has the advantages that the operation force is adjustable, passive energy recovery is achieved, the size is small, and the stroke is large.

Description

technical field [0001] The invention belongs to the technical field of auto parts, and relates to a linear motor shock absorber for an active suspension in an automobile wheel. Background technique [0002] The linear motor is a structural deformation of the rotary motor, which can be seen as a rotary motor that is cut along its radial direction and then flattened to evolve. With the rapid development of automatic control technology and microcomputers, higher requirements are put forward for the positioning accuracy of various automatic control systems. Devices are far from meeting the requirements of modern control systems. For this reason, many countries in the world are researching, developing and applying linear motors, making the application fields of linear motors more and more extensive. [0003] At present, the widely used oil-gas active shock absorbers have problems such as complex structure, low efficiency, low power density and large pollution. The linear motor s...

AI Technical Summary

Problems solved by technology

[0003] At present, the widely used oil-gas active shock absorbers have problems such as complex structure, low efficiency, low power density and large pollution. The linear motor shock absorber converts electrical energy into mechanical energy, which simplifies the mechanical structure and improves the efficiency. Moreover, the operating force can be adjusted at will, and energy recovery can be carried out.

[0004] At present, the linear motor shock absorber is rarely used in the car due to the limitation of the suspension installation space.

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