Thrust Compensation System Of Dual-Winding Voice Coil Motor
First Claim
1. A thrust compensation system comprising:
- a switch drive circuit of main windings of a voice coil motor that 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 a driving system of the voice coil motor in work;
a switch drive circuit of secondary windings of the voice coil motor that 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 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 constant;
wherein the voltages Udc1 and Udc2 of the first and second controlled voltage sources of the main windings and the second windings are configured as
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Accused Products
Abstract
A thrust compensation system of a dual-winding voice coil motor, which is used for driving the voice coil motor having main windings (100) and secondary windings (200), wherein the secondary windings (200) of the voice coil motor are between each pair of the main windings (100). The system includes a switch drive circuit of the main windings (800) which is powered by a first controlled voltage source to drive the main windings (100) 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 (900) which is powered by a second voltage source to drive the secondary windings (200) adopted as compensation windings, and used for providing the thrust ripple opposite to the main windings (100) so as to compensate the thrust ripple of the main windings (100) and keep the resultant force of the output of the main windings (100) and the secondary windings (200) of the voice coil motor in constant; wherein the voltages Udc1 and Udc2 of the first and second controlled voltage sources of the main windings (100) and the second windings (200) are configured as meeting a certain relationship.
39 Citations
13 Claims
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1. A thrust compensation system comprising:
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a switch drive circuit of main windings of a voice coil motor that 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 a driving system of the voice coil motor in work; a switch drive circuit of secondary windings of the voice coil motor that 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 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 constant; wherein the voltages Udc1 and Udc2 of the first and second controlled voltage sources of the main windings and the second windings are configured as - View Dependent Claims (2, 3, 4, 5, 11, 12, 13)
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6. A thrust compensation system of a dual-winding voice coil motor, including a voice coil motor, wherein the voice coil motor includes main windings, a magnetic steel and a permanent magnet, and further includes secondary windings arranged between a pair of main windings of the voice coil motor;
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wherein the main windings are the main working windings of the voice coil motor, driven by a switch drive circuit of the main windings which is powered by an independent controlled voltage source, and used for providing the electromagnetic force required by the driving system of the voice coil motor in work;
the secondary windings are compensation windings, driven by a switch drive circuit of the secondary windings which is powered by another independent controlled voltage source, and used for providing the thrust ripple opposite to the main windings so as to compensate the thrust ripple of the main windings and then 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 Udc1 and Udc2 of the controlled voltage sources of the main windings and the second windings are configured as - View Dependent Claims (7, 8, 9, 10)
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Specification