Electricity: motive power systems – With particular motor-driven load device – Tension-maintaining type of motor-control system
Patent
1997-03-19
1998-06-30
Ip, Paul
Electricity: motive power systems
With particular motor-driven load device
Tension-maintaining type of motor-control system
318561, 318609, 318610, 360 7308, 360 71, 2423342, 2423346, B65H 5938, G01B 1543
Patent
active
057739382
ABSTRACT:
A speed control apparatus for a rotary motor includes a motor for rotating at a speed based on a torque command and which outputs a present angular position and a present angular speed of the motor. A speed measuring unit is provided for obtaining a speed error representing the difference between a reference angular speed and a present angular speed. A speed controller is provided for outputting a current command for controlling a rotational speed of the motor. A learning compensator is provided for correcting an effect of a disturbance expressed as a function of an angular position and an angular speed applied to the motor, via a repetitive learning process using the reference angular speed, any one of the speed error from the speed measuring unit and the current command output from the speed controller and the present angular position of the motor, for removing a high frequency noise generated in the repetitive learning process, and for outputting a resultant disturbance correction value. A speed command compensator is provided for obtaining a corrected current command by adding the current command value output from the speed controller and the disturbance correction value obtained in the learning compensator; and a current controller is provided for receiving the corrected current command and outputting a torque command to the motor. Thus, the apparatus stores in advance the correction value obtained in the learning compensator and effectively performs a speed control using the stored value.
REFERENCES:
patent: 4561400 (1985-12-01), Hattori
patent: 5036266 (1991-07-01), Burke
patent: 5155422 (1992-10-01), Sidman et al.
patent: 5327061 (1994-07-01), Gullapalli
patent: 5395066 (1995-03-01), Yokoyama et al.
patent: 5481417 (1996-01-01), Yokoyama et al.
patent: 5491594 (1996-02-01), Yamamoto et al.
patent: 5610487 (1997-03-01), Hutsell
patent: 5652491 (1997-07-01), Ikawa et al.
patent: 5710500 (1998-01-01), Matsuo et al.
Patent Abstracts of Japan, vol. 17, No. 646 (E-1467), Nov. 30, 1993 & JP-A-05 207776 (Toshiba Corp), Aug. 13, 1993.
Nobuyuki Matsui et al "Autocompensation of Torque Ripple of Direct Drive Motor by Torque Observer", pp. 187-194, IEEE Transaction on Industry Applications, vol. 29, No. 1, Jan. 1993, New York.
B.S. Stevens "The Compensation of Torque Variations In Electric Drives" European Power Electronics Chapter Symposium, Oct. 19-20, 1994, pp. 379-384.
M. Gotou et al. Development of Multirate Sampling Repetitive Learning Servo System and Its Application to a Compact Camcorder, Iros, 1991, Nov. 3-5, 1991, pp. 647-654.
Ha In-joong
Kim Young-hun
Seong Goan-Soo
Ip Paul
Samsung Electronics Co,. Ltd.
LandOfFree
Apparatus for controlling speed of a rotary motor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for controlling speed of a rotary motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for controlling speed of a rotary motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1863465