Motor controller, motor driving apparatus, motor driving system, image forming apparatus, and conveying device
AssigneeRicoh Company, Ltd.
InventorsNorihiro Yamamoto, Haruyuki Suzuki, Masayuki Muranaka
Life of this patent
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Abstract
A motor controller that controls a motor in a first control method based on a first current command value and a second control method based on a second current command value. The motor controller includes an analog-to-digital converter to generate the second current command value based on a reference signal externally input to the motor controller and a current limit generator to generate an upper limit value of the first current command value based on the second current command value.
Claims16
A motor controller configured to control a motor comprising:
- a first current command value generator configured to generate a first current command value;
- an analog-to-digital converter configured to generate a second current command value based on a reference signal externally input to the motor controller;
- and
- a current limit generator configured to generate an upper limit value of the first current command value based on the second current command value,
- wherein the motor controller is configured to control the motor in a first control method based on the first current command value and a second control method based on the second current command value,
- wherein the current limit generator is configured to generate the upper limit value by either multiplying the second current command value by a prescribed value or adding a prescribed value to the second current command value.
A method of controlling a motor with a motor controller by using a first control method and a second control method, comprising:
- generating a first current command value;
- receiving a reference signal externally input to the motor controller;
- generating a second current command value with an analog-to-digital converter based on the reference signal;
- generating an upper limit value of the first current command value with a current limit generator based on the second current command value;
- and
- alternately implementing the first control method and the second control method based on the upper limit value of the first current command value and the second current command value, respectively,
- wherein the generating of the upper limit value of the first current command value includes either multiplying the second current command value by a prescribed value or adding a prescribed value to the second current command value.
Dependencies are inferred from the claim text.