A kind of linear motor shock absorber for automobile in-wheel active suspension

Abstract

The invention relates to a linear motor shock absorber for an active suspension in an automobile wheel, belonging to the technical field of automobile accessories. The linear motor shock absorber mainly includes motor shock absorber, bracket, wheel, passive suspension spring and passive shock absorber. The motor shock absorber is installed in the wheel through the bracket. The motor shock absorber includes peripheral magnetic isolation sleeve, end Cover, mover, stator, linear cylindrical slide rail; the stator includes a cylindrical support shaft, an annular stator magnetic back iron, an annular S-pole permanent magnet and an N-pole permanent magnet; the mover includes an annular mover core guide Magnets, winding coils, Hall sensors, annular grooves and mover teeth; the motor shock absorber adopts a moving coil structure with an inner stator and an outer mover, and the mover can slide up and down along the stator through a cylindrical slide rail; the motor shock absorber It is connected in parallel with passive suspension springs and passive shock absorbers installed outside the wheels. The invention provides a linear motor shock absorber for an active suspension in an automobile wheel, which has the characteristics of adjustable operating power, passive energy recovery, small volume, large stroke and the like.

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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