Wheel motor driver integrated with magnetofluid brake

A magnetic fluid, wheel motor technology, applied in the direction of hydraulic resistance brakes, electric components, brake types, etc., can solve problems such as lack and safety, and achieve the effect of reducing torque fluctuation, reducing stator thickness, and reducing the effect of magnetic flux leakage

Active Publication Date: 2020-01-21
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lack of active or passive damping system will still bring certain safety problems in the process of cooperating with people

Method used

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  • Wheel motor driver integrated with magnetofluid brake
  • Wheel motor driver integrated with magnetofluid brake
  • Wheel motor driver integrated with magnetofluid brake

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The wheel motor driver with integrated magnetic fluid brake disclosed by the invention is divided into three parts: a stator, a rotor and a magnetic fluid.

[0021] In the wheel motor driver with integrated magnetic fluid brake, the stator part adopts a cogging-free design, which reduces the thickness of the stator.

[0022] In the wheel motor driver with integrated magnetic fluid brake, the rotor adopts a large-radius multi-pole permanent magnet design to realize low-speed high-torque operation. The permanent magnet adopts Halbach Array, which increases the concentration effect of the magnetic field on one side of the magnet and reduces the magnetic flux leakage on the other side. With this design, in the normal operation mode of the motor, the magnetic field will be concentrated on the air gap side without changing the viscosity characteristics of the ferrofluid side. The permanent magnet adopts the design of combining soft magnetic and hard magnetic materials. The s...

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PUM

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Abstract

The invention discloses a wheel motor driver integrated with a magnetofluid brake. The wheel motor driver comprises a stator (I), a rotor (II) and a magnetofluid structure (III). The stator (I) is located on the outermost circle, the magnetofluid structure (III) is located in the middle, and the rotor (II) is located between the stator (I) and the magnetofluid structure (III). A permanent magnet is composed of a hard magnetic material and a soft magnetic material. The direction change of the magnetic field of the soft magnetic material can be controlled through pulse currents of a stator coil,and the normal operation mode of a motor and the damping operation mode of the magnetofluid brake are switched. The magnetofluid part is located on the other side of the main rotor to form the similar single-stator double-rotor structure, and the magnetofluid changes the fluid characteristics under the common effect of a magnet and the magnetic field of the magnetic coil and has the damping and braking effects. By means of the whole novel motor, the integrated design and control of the active damping brake and the wheel motor are realized, and the number of parts and the weight and size of awhole system are reduced.

Description

technical field [0001] The invention relates to a wheel motor driver integrated with magnetic fluid brakes, which is applied to the integrated design and control of motors and damping brakes, reduces the components and weight of the overall system, improves the control characteristics of the overall system, and belongs to the technical field of motor manufacturing. Background technique [0002] In the field of motor traction and drag (automobiles, ships, aircraft, wind power, robots, and medical care, etc.), the research on direct drive of gearless motors is constantly heating up. The gearless design can reduce the mechanical vibration and heat dissipation problems caused by the integration of gear sets, making the overall system more compact and lightweight, and its performance has also been greatly improved. However, without the reduction gear, the motor is required to provide greater torque, and a series of changes are required in the design of the motor. The wheel motor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D57/00H02K7/10
CPCF16D57/002H02K7/10
Inventor 徐炜
Owner SOUTHEAST UNIV
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