Electricity: motive power systems – Synchronous motor systems – Armature winding circuits
Patent
1989-10-04
1991-08-06
Shoop, Jr., William M.
Electricity: motive power systems
Synchronous motor systems
Armature winding circuits
318802, 318809, 318811, H02P 736
Patent
active
050380907
ABSTRACT:
A servo motor control apparatus effecting a feedback control of a servo motor according to an external operation command. The apparatus includes: an operational running state detecting unit for detecting a running state of the servo motor; a memory unit in which data representing inter-relation values are stored; a current value computing unit for computing an appropriate drive current value for the external operation comand; and a driving unit for driving the servo motor according to the computed appropriate drive current value. By defining the inter-relation values in advance in accordance with operational states of the servo motor so that a drive power of the servo motor approximates a value indicated by the external operation command and specifying an inter-relation value corresponding to the detected operational state with reference to the defined inter-relations to compute the appropriate drive current value, it is possible to compensate a phase difference between a current command value and an actual current irrespective of the rotational speed; and improve the response of the control apparatus to decrease a time lag of an output torque and a microscopic fluctuation thereof.
REFERENCES:
patent: 4384242 (1983-05-01), Ono
patent: 4477762 (1984-10-01), Kurakaku et al.
patent: 4703245 (1987-10-01), Sakamoto et al.
Kawabata Yasutomo
Mizutani Ryoji
Suzuki Hirosumi
Bergmann Saul M.
Shoop Jr. William M.
Toyota Jidosha & Kabushiki Kaisha
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