Title:
MOTOR CONTROLLER
Document Type and Number:
Japanese Patent JP3654049
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain smooth speed command and current/torque variation with respect to abrupt variation of a speed command input by limiting the speed command input with a trapezoidal acceleration command and converting it into a trapezoidal + S-shaped speed command, and then controlling the conduction current to a motor depending on the difference from an actual speed.
SOLUTION: When a switch 3 is turned off, a motor 4 is actuated toward a speed command set by means of a volume 1. Based on an acceleration command approximated by a trapezoidal acceleration command, a converting means 5 makes a comparison with a speed command input and outputs a converted speed command 1 for each sampling period. A motor control means 7 controls the conduction current to the motor 4, depending on the difference of the speed command signal 1 from an actual speed from a speed measuring means 8 and operates the motor 4 to attain an actual speed pattern which is substantially equal to the speed command signal 1. When the switch 1 is turned on, the speed command turns to 0, and the acceleration becomes negative so that a speed command pattern for deceleration is obtained.
More Like This:
Inventors:
Shigeo Negi
Application Number:
JP14185599A
Publication Date:
June 02, 2005
Filing Date:
May 21, 1999
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H02P29/00; H02P5/00; (IPC1-7): H02P5/00
Domestic Patent References:
| JP3036977A | ||||
| JP3118787A | ||||
| JP4265699A |
Attorney, Agent or Firm:
Fumio Iwahashi
Tomoyasu Sakaguchi
Hiroki Naito
Tomoyasu Sakaguchi
Hiroki Naito
Previous Patent: DRIVE CONTROLLER FOR HYBRID CAR
Next Patent: PRODUCTION OF N-ACETYLCYCLOHEXYLGLYCINE COMPOUND
Next Patent: PRODUCTION OF N-ACETYLCYCLOHEXYLGLYCINE COMPOUND