Operating a resolver and detecting a defect in the resolver
First Claim
1. An apparatus for operating a resolver, the apparatus comprising:
- at least one receiver winding and an exciter winding which are associated with a rotor, andan 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 receiver winding is connected at a first end to a first actuable switch by a first RC circuit including a first resistor in series with a first capacitor, the first actuable switch connecting the first RC circuit as required to a positive voltage source, andwherein the receiver winding is connected at a second end to a second actuable switch by a second RC circuit including a second resistor in series with a second capacitor, the second actuable switch connecting the second RC circuit as required to a negative voltage source, and to a control unit which simultaneously actuates the first and second actuable switches as required and thereby monitors the oscillation behavior of the receiver winding in order to detect a defect in the resolver.
1 Assignment
0 Petitions
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.
7 Citations
9 Claims
-
1. An apparatus for operating a resolver, the apparatus comprising:
-
at least one 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 receiver winding is connected at a first end to a first actuable switch by a first RC circuit including a first resistor in series with a first capacitor, the first actuable switch connecting the first RC circuit as required to a positive voltage source, and wherein the receiver winding is connected at a second end to a second actuable switch by a second RC circuit including a second resistor in series with a second capacitor, the second actuable switch connecting the second RC circuit as required to a negative voltage source, and to a control unit which simultaneously actuates the first and second actuable switches as required and thereby monitors the oscillation behavior of the receiver winding in order to detect a defect in the resolver. - View Dependent Claims (2)
-
-
3. A resolver device comprising:
-
a resolver which has at least two receiver windings and at least one exciter winding, which is associated with a rotor, and an evaluation device which determines an angular position of the rotor as a function of a voltage induced by the rotor winding and a first receiver winding of the at least two receiver windings, wherein the first receiver winding of the at least two receiver windings is connected at a first end to a first actuable switch by a first RC circuit including a first resistor in series with a first capacitor, said first actuable switch connecting the first 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 including a second resistor in series with a second capacitor, said second actuable switch connecting the second RC circuit as required to a negative voltage source, and to a control unit which simultaneously actuates the first and second actuable switches as required and thereby monitors the oscillation behavior of the first receiver winding in order to detect a defect in the resolver. - View Dependent Claims (4)
-
-
5. A method for operating a resolver device, the method comprising:
-
connecting a first receiver winding at a first end to a first actuable switch by a first RC circuit including a first resistor in series with a first capacitor, said first actuable switch connecting the first RC circuit as required to a positive voltage source, and connecting the first receiver winding at a second end to a second actuable switch by a second RC circuit including a second resistor in series with a second capacitor, said second actuable switch connecting the second RC circuit as required to a negative voltage source, simultaneously actuating, with a control unit, the first and second actuable switches; monitoring, with the control unit, the resulting oscillation behavior of the first receiver winding; and suggesting a defect, with the control unit, in the resolver as a function of the oscillation behavior. - View Dependent Claims (6, 7, 8, 9)
-
Specification