Title:
MOTOR ABNORMALITY DETECTION DEVICE, CONTROL METHOD FOR MOTOR ABNORMALITY DETECTION DEVICE, AND IMAGE FORMING APPARATUS
Document Type and Number:
Japanese Patent JP2021141710
Kind Code:
A
Abstract:
To solve the problem in which: in a conventional motor abnormality detection device, a comparator is provided for every motor driver to detect an overcurrent; however, when a number of motors are present in a system, the number of the comparators is increased and the comparators cannot be stored in an IC mounted in one semiconductor package, which may cause an increase in cost.SOLUTION: In the present invention, an analog switch is provided on an input side of a comparator connected with a current detection resistor by using resources prepared for an analog FPGA to reduce the number of comparators. A motor abnormality detection device can thus be provided which can detect an overcurrent without causing an increase in cost.SELECTED DRAWING: Figure 4
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Inventors:
ISHIKAWA SATORU
Application Number:
JP2020037552A
Publication Date:
September 16, 2021
Filing Date:
March 05, 2020
Export Citation:
Assignee:
CANON KK
International Classes:
H02P5/46
Attorney, Agent or Firm:
Hinoki International Patent Office