Electricity: motive power systems – Positional servo systems – With particular 'error-detecting' means
Patent
1992-01-30
1993-03-30
Ip, Paul
Electricity: motive power systems
Positional servo systems
With particular 'error-detecting' means
318662, 901 9, G05B 106
Patent
active
051987392
ABSTRACT:
An auxiliary resolver position tracking (RPT) system for an industrial robot includes a resolver excitation and monitoring system which is powered by an uninterruptable power supply which includes a battery. The RPT system generates trapezoidal excitation pulses for the resolvers in the robot when no external excitation signal is applied, for example when the robot is shut down. Since there is relatively little motion to be detected in these instances, the RPT system switches between a slow position sampling rate, when no motion is detected, and a fast sampling rate when motion is detected. When operating on battery power, the RPT only switches to the fast sampling rate when motion is detected. To ensure that no motion data is lost when the system switches back to the slow sampling rate, the high sampling rate is maintained for a time sufficeint to capture any residual motion of the robot. In addition, the RPT includes circuitry to detect when the external excitation signal is absent, to detect when individual invalid position samples may be taken and to distinguish between valid motion and a jitter condition in which the sensed resolver position oscillates between two quadrants.
REFERENCES:
patent: 3562619 (1971-02-01), Hyaguchi et al.
patent: 4011440 (1977-03-01), Steglich
patent: 4079374 (1978-03-01), Cox, Jr.
patent: 4323884 (1982-04-01), Dvondeon et al.
patent: 4328483 (1982-05-01), Swartz et al.
patent: 4352050 (1982-09-01), Sakono
patent: 4355305 (1982-10-01), Cording et al.
patent: 4472669 (1984-09-01), Deahom et al.
patent: 4511884 (1985-04-01), Serev et al.
patent: 4533078 (1985-11-01), Wise
patent: 4631523 (1986-12-01), Ono et al.
patent: 4672279 (1987-06-01), Hozokoun et al.
patent: 4710778 (1987-12-01), Hakota et al.
patent: 4712106 (1987-12-01), McNally
patent: 4740778 (1988-04-01), Harding et al.
patent: 4792754 (1988-12-01), Pournain
patent: 4795954 (1989-01-01), Sakurai et al.
patent: 4952852 (1990-08-01), Bondo et al.
patent: 4970450 (1990-11-01), Karl et al.
patent: 4988273 (1991-01-01), Faiz et al.
patent: 5038272 (1991-08-01), Calcagno et al.
patent: 5092051 (1992-03-01), Holmer et al.
Maczka Richard J.
Russell, III Carl H.
Taylor Donald K.
Boles Donald M.
Ip Paul
Siemens Industrial Automation, Inc.
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