| 摘要 |
A resolver system and method is provided for determining the angle position of a shaft. The resolver system includes a resolver having first and second output windings and an input or reference winding spaced apart from the first and second output windings, where either the input winding or the output windings are connected to the shaft. When a drive signal is introduced into the input winding, it generates first and second output signals on the output windings representing the angle position of the shaft. The resolver system of the present invention further includes a processor connected to the output windings for receiving the first and second data signals from the resolver and determining the angle position of the shaft. For generating the drive signal, the resolver system further includes a drive circuit connected to the input winding of the resolver. The drive circuit generates a pulsed drive signal for input into the resolver. This pulsed drive signal generates a large amplitude signal, thereby eliminating the need for gain amplifiers on the output windings of the resolvers, which can introduce electrical noise and require impedance matching. Additionally, the resolver system of the present invention may also include a demodulator connected to the output windings of the resolver that is synchronized with the drive circuit. In this embodiment, the demodulator connects the output windings to the processor when a pulse is input by the drive circuit, thereby eliminating noise in the data signals. Additionally, the duty cycle of the drive signal may be controlled so as not to exceed the resolver's power rating.
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