Motor drive with velocity-second compensation
First Claim
1. An apparatus for use with a signal generator and a motor controller, where the signal generator provides a reference velocity signal, and the motor controller receives an output signal and uses the output signal to control a torque input signal applied to the motor, comprising:
- a velocity compensator operable to receive the reference velocity signal, determine a derivative of the reference velocity signal, and generate a velocity compensation signal based on the derivative;
an adjustor operable to adjust the reference velocity signal as a function of the velocity compensation signal; and
a velocity regulator operable to compare the adjusted reference velocity signal to a feedback velocity signal and generate the output signal received by the motor controller for adjusting the torque input signal based on the comparison.
1 Assignment
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Accused Products
Abstract
An apparatus for use with a signal generator and a motor controller includes a velocity compensator, an adjustor, and a velocity regulator. The signal generator provides a reference velocity signal, and the motor controller receives an output signal and uses the output signal to control a torque input signal applied to the motor. The velocity compensator is operable to receive the reference velocity signal, determine a derivative of the reference velocity signal, and generate a velocity compensation signal based on the derivative. The adjustor is operable to adjust the reference velocity signal as a function of the velocity compensation signal. The velocity regulator is operable to compare the adjusted reference velocity signal to a feedback velocity signal and generate the output signal received by the motor controller for adjusting the torque input signal based on the comparison.
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Citations
27 Claims
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1. An apparatus for use with a signal generator and a motor controller, where the signal generator provides a reference velocity signal, and the motor controller receives an output signal and uses the output signal to control a torque input signal applied to the motor, comprising:
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a velocity compensator operable to receive the reference velocity signal, determine a derivative of the reference velocity signal, and generate a velocity compensation signal based on the derivative; an adjustor operable to adjust the reference velocity signal as a function of the velocity compensation signal; and a velocity regulator operable to compare the adjusted reference velocity signal to a feedback velocity signal and generate the output signal received by the motor controller for adjusting the torque input signal based on the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An electronic line shaft, comprising:
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a signal source operable to generate a reference velocity signal; a master drive unit operable to receive the reference velocity signal, comprising; a motor; a motor controller operable to provide a torque input signal to the motor; a velocity compensator operable to receive the reference velocity signal, determine a derivative of the reference velocity signal, and generate a velocity compensation signal based on the derivative; an adjustor operable to adjust the reference velocity signal as a function of the velocity compensation signal; and a velocity regulator operable to compare the adjusted reference velocity signal to a feedback velocity signal and provide an output signal to the motor controller for adjusting the torque input signal based on the comparison. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method for controlling a motor, comprising:
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providing a torque input signal to the motor; generating a reference velocity signal; generating a velocity compensation signal based on a derivative of the reference velocity signal; adjusting the reference velocity signal based on the velocity compensation signal; and comparing the adjusted reference velocity signal to a feedback velocity signal; and adjusting the torque input signal based on the comparison.
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26. A printing system including a plurality of printing stations for processing a web, comprising:
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a signal source operable to generate a reference velocity signal; and a plurality of drive units for moving the web through the printing stations in accordance with the reference velocity signal, each of the drive units comprising; a motor; a motor controller operable to provide a torque input signal to the motor; a velocity compensator operable to receive the reference velocity signal, determine a derivative of the reference velocity signal, and generate a velocity compensation signal based on the derivative; an adjustor operable to adjust the reference velocity signal as a function of the velocity compensation signal; and a velocity regulator operable to compare the adjusted reference velocity signal to a feedback velocity signal and provide an output signal to the motor controller for adjusting the torque input signal based on the comparison. - View Dependent Claims (27)
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Specification