APPARATUS FOR OPERATING A RESOLVER, RESOLVER DEVICE AND METHOD FOR OPERATING A RESOLVER DEVICE
First Claim
1. An apparatus for operating a resolver which comprises at least one first receiver winding and an exciter winding which are associated with a rotor, and an evaluation device which determines an angular position of the rotor as a function of an induced voltage that is generated by the exciter winding and detected by the receiver winding, wherein the first receiver winding is connected at a first end to an actuable switch by a first RC circuit, said switch connecting the RC circuit as required to a positive voltage source, and wherein the first receiver winding is connected at a second end to a second actuable switch by a second RC circuit, said second switch connecting the second RC circuit as required to a negative voltage source, and to a control unit which simultaneously actuates the switches as required and thereby monitors the oscillation behavior of the first receiver winding in order to detect a defect in the resolver.
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Accused Products
Abstract
An apparatus for operating a resolver which includes at least one first receiver winding and an exciter winding, which are/can be associated with a rotor, and an evaluation device which determines an angular position of the rotor as a function of an induced voltage that is generated by the exciter winding and detected by the receiver winding . According to the invention, the first receiver winding is connected at a first end to an actuable switch by means of a first RC circuit, said switch connecting the RC circuit as required to a positive voltage source, and the first receiver winding is connected at a second end to a second actuable switch by means of a second RC circuit, said second switch connecting the second RC circuit as required to a negative voltage source, and to a control unit which simultaneously actuates the switches as required.
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Citations
9 Claims
- 1. An apparatus for operating a resolver which comprises at least one first receiver winding and an exciter winding which are associated with a rotor, and an evaluation device which determines an angular position of the rotor as a function of an induced voltage that is generated by the exciter winding and detected by the receiver winding, wherein the first receiver winding is connected at a first end to an actuable switch by a first RC circuit, said switch connecting the RC circuit as required to a positive voltage source, and wherein the first receiver winding is connected at a second end to a second actuable switch by a second RC circuit, said second switch connecting the second RC circuit as required to a negative voltage source, and to a control unit which simultaneously actuates the switches as required and thereby monitors the oscillation behavior of the first receiver winding in order to detect a defect in the resolver.
Specification