Title:
SERVO DEVICE
Document Type and Number:
Japanese Patent JPH0283714
Kind Code:
A
Abstract:
PURPOSE:To evade the deviation caused by the change of a frictional torque by detecting a control subject via an acceleration detector and applying a current corresponding to the frictional torque calculated from the detected control subject to a servo amplifier. CONSTITUTION:An angle acceleration detector 3 detects the angle acceleration of a radar antenna 1 and outputs an angle acceleration signal AL to an arithmetic circuit 14. The circuit 14 inputs the signal AL, a current signal IL outputted from a current detector 9 after detection of a motor current I, and an angle velocity signal VL of the antenna 1 detected by an angle velocity detector 6. Then the circuit 14 outputs a current signal (reverse current command) IT in response to the frictional torque. An adder 15 adds the command IT to a current command which inputs an angle velocity error V and outputs it after performing an arithmetic process carried out based on a prescribed control logic. Thus it is possible to evade the deviation which is caused by the change of the frictional torque.
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Inventors:
AKIMOTO SHINJI
Application Number:
JP23673888A
Publication Date:
March 23, 1990
Filing Date:
September 21, 1988
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G05D3/12; H01Q3/02; (IPC1-7): G05D3/12; H01Q3/02
Attorney, Agent or Firm:
Masuo Oiwa (2 outside)
Next Patent: JPH0283715