Electricity: motive power systems – Limitation of motor load – current – torque or force
Patent
1998-09-17
2000-02-15
Masih, Karen
Electricity: motive power systems
Limitation of motor load, current, torque or force
318254, 318138, 318798, 318439, H02K 1732
Patent
active
060256842
ABSTRACT:
A method for driving a servo-motor detects a power voltage of a servo-motor determine a detected value. Through numeric calculation, the detected value is used to control a voltage command to a power converter, where the power converter supplies the proper currents to the servo-motor. The method does not require the use of a feedback loop, and thus, requires fewer components than the traditional method that also requires the use of a current sensor and an A/D converter.
REFERENCES:
patent: 5428281 (1995-06-01), Seki et al.
patent: 5818179 (1998-10-01), Kokami et al.
patent: 5847521 (1998-12-01), Morikawa et al.
European Patent Office Action, dated Jul. 19, 1999.
Conference Record, Publication Date: Mar. 10, 1993, "Current Sensorless Field Oriented Control of Synchronous Reluctance Motor," Author(s): Takayoshi Matsuo and Thomas A. Lipo.
Masih Karen
Tamagawa Seiki Kabushiki Kaisha
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