Harbin Institute of Technology

Jiwei Cao

Liyi Li

Chengming Zhang

Donghua Pan

Qingbo Guo

Jiaxi Liu

A three-dimensional force loading device for a motor spindle is provided, and relates to the field of motor spindle testing. The device including a bottom plate; a torque loading assembly configured for testing torque performance of the motor spindle, and the torque loading assembly is in transmission connection with the motor spindle; a sleeve shell rotatably sleeved on the motor spindle, the sleeve shell is fixed along an axis direction of the motor spindle; a radial force loading assembly configured for testing radial force performance of the motor spindle, and the radial force loading assembly is fixedly connected with the sleeve shell; an axial force loading assembly configured for testing axial force performance of the motor spindle; and a intermediate force transmission mechanism connected with the sleeve shell and the axial force loading assembly.

Three-dimensional force loading device for motor spindle

A thrust compensation system of a dual-winding voice coil motor, which is used for driving the voice coil motor having main windings () and secondary windings (), wherein the secondary windings () of the voice coil motor are between each pair of the main windings (). The system includes a switch drive circuit of the main windings () which is powered by a first controlled voltage source to drive the main windings () adopted as the main working windings of the voice coil motor and used for providing the output electromagnetic force required by the driving system of the voice coil motor in work; a switch drive circuit of the secondary windings () which is powered by a second voltage source to drive the secondary windings () adopted as compensation windings, and used for providing the thrust ripple opposite to the main windings () so as to compensate the thrust ripple of the main windings () and keep the resultant force of the output of the main windings () and the secondary windings () of the voice coil motor in constant; wherein the voltages Uand Uof the first and second controlled voltage sources of the main windings () and the second windings () are configured as meeting a certain relationship.

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Harbin, China

Jiwei Cao