Title:
MOTOR CONTROLLER, METHOD, AND PROGRAM
Document Type and Number:
Japanese Patent JP2018182895
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To suppress the circuit size and a processing time while executing the speed control of a stepping motor by calculation based on physical theory.SOLUTION: A step time calculation unit 202 calculates a time for a distance of an n-th step (n is a positive integer) in order to calculate a step time which is the application time of a pulse signal for a stepping motor on the basis of a physical theoretical expression that expresses a parameter in an acceleration period or a deceleration period of the stepping motor. The step time calculation unit 202 a time for a distance of the n-th step, which is expressed by using the reciprocal of the derivative f'(t) by applying the Newton's method to the distance x=f(t) which is a function of a time included in the physical theoretical expression. At that time, the reciprocal of the derivative is obtained by applying the Newton's method to the reciprocal of the derivative f'(t).SELECTED DRAWING: Figure 2
Inventors:
MIZOGUCHI MASAHIKO
Application Number:
JP2017079028A
Publication Date:
November 15, 2018
Filing Date:
April 12, 2017
Export Citation:
Assignee:
CANON KK
International Classes:
H02P8/14
Domestic Patent References:
| JPH0345197A | 1991-02-26 | |||
| JP2001268150A | 2001-09-28 | |||
| JP2008160997A | 2008-07-10 | |||
| JP2002197133A | 2002-07-12 | |||
| JPH01129434A | 1989-05-22 | |||
| JP2006293622A | 2006-10-26 | |||
| JP2013247776A | 2013-12-09 |
Attorney, Agent or Firm:
Takayoshi Kokubun