US 7,459,873 B2
Method for extracting maximum gain of servo controller
Kazuo Sato, Fukuoka (Japan)
Assigned to Kabushiki Kaisha Yaskawa Denki, Fukuoka (Japan)
Appl. No. 10/567,085
PCT Filed Jun. 28, 2004, PCT No. PCT/JP2004/009102
§ 371(c)(1), (2), (4) Date Feb. 03, 2006,
PCT Pub. No. WO2005/013018, PCT Pub. Date Feb. 10, 2005.
Claims priority of application No. 2003-286708 (JP), filed on Aug. 05, 2003.
Prior Publication US 2008/0143287 A1, Jun. 19, 2008
Int. Cl. G05B 11/38 (2006.01)
U.S. Cl. 318—619  [318/623; 318/632] 1 Claim
OG exemplary drawing
 
1. A method for extracting a maximum gain of a servo controller for driving a servo motor comprising the steps of:
applying a simulated disturbance torque to a torque command by a vibrating unit while a control gain is raised, and detecting the vibration of a control system by a vibration detecting unit;
repeating a process for applying the simulated disturbance torque while the control gain is raised until the vibration of a prescribed level is detected, and
setting the control gain when the vibration detecting unit detects the vibration exceeding the prescribed level as a maximum gain.