Title:
DIGITAL SERVO CONTROL SYSTEM
Document Type and Number:
Japanese Patent JPH02228701
Kind Code:
A
Abstract:
PURPOSE:To suppress vibration generation, to improve system response, and to stabilize the system as a whole by reducing an integration gain as the difference between a motor speed and a machine speed increases at the time of stopping and acceleration/deceleration, and increasing the integration gain at the time of a normal operation. CONSTITUTION:An integration gain K1 of a speed controller 10 is changed according to the magnitude of a difference (omegam-omegaL) between a motor speed omegam and a machine speed omegaL. That is, when the motor speed omegam and the machine speed omegaL is the same, the integration gain K1 is set at a maximum value K10, and as the difference (omegam-omegaL) between the motor speed omegam and the machine speed omegaL increases, the integration gain K1 is decreased. Consequently at the time of the stopping and acceleration/deceleration, the integration gain K1 is decreased, the effect of an integrating operation is decreased, when a control system synchronizes to a machine system, the integration gain K1 is increased, and the responsibility is improved. Thus the whole system is stabilized, and a servo system at the high responsibility can be obtained.
Inventors:
SAKAMOTO KEIJI
MATSUBARA SHUNSUKE
MATSUBARA SHUNSUKE
Application Number:
JP4847989A
Publication Date:
September 11, 1990
Filing Date:
March 02, 1989
Export Citation:
Assignee:
FANUC LTD
International Classes:
G05B5/01; G05B11/36; G05B13/02; G05D3/12; H02P25/098; H02P29/00; (IPC1-7): G05B5/01; H02P5/00
Attorney, Agent or Firm:
Matsumoto Takemoto (2 outside)
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