System and method for diagnosing a controller in a limited rotation motor system
First Claim
1. A method of analyzing a limited rotation motor system, said method comprising the steps of:
- providing a motor control frequency domain signal that is representative of a frequency domain representation of a motor control signal responsive to a first digital signal that is representative of the motor control signal;
providing a position detection frequency domain signal that is representative of a frequency domain representation of a position detection signal responsive to a second digital signal that is representative of the position detection signal;
identifying a representation of the frequency response of the limited rotation motor responsive to the motor control frequency domain signal and the position detection frequency domain signal; and
comparing the representation of the frequency response with a previously recorded representation of a prior frequency response to identify an error condition with respect to the limited rotation motor system.
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Abstract
A method of analyzing a limited rotation motor system is disclosed. The method includes the step of providing a motor control frequency domain signal that is representative of a frequency domain representation of the motor control signal responsive to a first digital signal that is representative of a motor control signal. The method also includes the step of providing a position detection frequency domain signal that is representative of a frequency domain representation of the position detection signal responsive to a second digital signal that is representative of a position detection signal. The system further includes the steps of identifying a representation of the frequency response of the limited rotation motor responsive to the position detection frequency domain signal and the motor control frequency domain signals, and comparing the representation of the frequency response with a previously recorded representation of a prior frequency response to identify an error condition with respect to the limited rotation motor system.
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Citations
21 Claims
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1. A method of analyzing a limited rotation motor system, said method comprising the steps of:
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providing a motor control frequency domain signal that is representative of a frequency domain representation of a motor control signal responsive to a first digital signal that is representative of the motor control signal; providing a position detection frequency domain signal that is representative of a frequency domain representation of a position detection signal responsive to a second digital signal that is representative of the position detection signal; identifying a representation of the frequency response of the limited rotation motor responsive to the motor control frequency domain signal and the position detection frequency domain signal; and comparing the representation of the frequency response with a previously recorded representation of a prior frequency response to identify an error condition with respect to the limited rotation motor system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of analyzing a limited rotation motor system, said method comprising the steps of:
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providing a motor control frequency domain sequence that is representative of a frequency domain representation of a motor control signal for a plurality of frequencies responsive to a first digital signal that is representative of the motor control signal using a first Fast Fourier Transform; providing a position detection frequency domain sequence that is representative of a frequency domain representation of a position detection signal for the plurality of frequencies responsive to a second digital signal that is representative of the position detection signal using a second Fast Fourier Transform; identifying a representation of the frequency response for the plurality of frequencies of the limited rotation motor responsive to the motor control frequency domain signal and the position detection frequency domain signal; and comparing the representation of the frequency response with a previously recorded representation of a prior frequency response to identify an error condition with respect to the limited rotation motor system. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification