Motor control device, motor position control method, and industrial machine

A motor position control method for performing position control of a motor, using a movement command processing unit including a buffer, a filter, and a processing unit, the method comprising:

• a first step of inputting and holding a movement command in the buffer;
• a second step of inputting a constant into the filter, performing filter processing of the constant, and generating a new constant;
• a third step of extracting the movement command held in the buffer, adding the extracted movement command to a value held in a first holding section in the processing unit to obtain a first addition value, and holding the first addition value while adding the constant to a value held in a second holding section in the processing unit to obtain a second addition value, and holding the second addition value;
• and
• a fourth step of performing an arithmetic operation based on the new constant, the first addition value, and the second addition value, generating a new movement command proportional to the new constant, and subtracting the new movement command from the first addition value held in the first holding section to obtain a value, and holding the obtained value in the first holding section, while subtracting the new constant from the second addition value held in the second holding section to obtain a value, and holding the obtained value in the second holding section.