Patent US3090248A successfully refreshed from Google Patents.
EP0241563B1
Expired / Lapsed
EP
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Speed control system
Assignee: Fanuc Corp
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Filing: 1986-10-17
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Granted: 1992-02-05
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Expires: 2006-10-17
Abstract
Abstract A speed control system which enables simultaneous estimation of the speed by an observer based upon position data fed from a rotary encoder and the load torque causative of constant estimation errors, to thereby control the speed by using the estimated value. The position data fed from the rotary encoder is fed back to the integral control element of the I-P controller to control the speed of a motor.
Inventors
- 👤 Keiji Fuyou-Haitsu 102 65-4 Sakamoto
- 👤 Yukio 2-4 Takakura-Cho Toyosawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 09:22
CPC Classifications
G; G05; G05D; G05D13/00; G05D13/62; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/21; G05B19/23; G05B19/231; G05B19/232; H; H02; H02P; H02P23/00; H02P23/16; G05B2219/00; G05B2219/30; G05B2219/41; G05B2219/41112; G05B2219/41367; G05B2219/42; G05B2219/42055
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
A velocity control system for an electrical motor in which position information from a rotary encoder mounted on the motor is fed back and a torque command is produced for application to the motor, said system comprising: means for feeding back position information from the rotary encoder to an integration element of an I-P controller; observer means for estimating velocity based on said position information and motor current; means for feeding back an estimated velocity value, which is obtained from said observer means, to a proportion element of said I-P controller; and means for calculating torque command information for the motor based on an output of said I-P controller and said estimated velocity value.
Claim 2
Dependent Claim
114 words
A velocity control system for an electrical motor in which position information from a rotary encoder mounted on the motor is fed back and a torque command is produced for application to the motor, said system comprising: means for feeding back position information from the rotary encoder to an integration element of an I-P controller; observer means for estimating velocity based on said position information and motor current; means for feeding back an estimated velocity value, which is obtained from said observer means, to a proportion element of said I-P controller; and means for calculating torque command information for the motor based on an output of said I-P controller and said estimated velocity value.
Claim 3
Dependent Claim
36 words
A velocity control system according to claim 1, characterized in that the torque command information for the motor is calculated based on output of the integration element of the I-P controller and said estimated velocity value.
Claim 4
Dependent Claim
103 words
A velocity control system according to claim 1, characterized in that at least the means for feeding back the position information from the rotary encoder to the integration element of the I-P controller, the observer means for estimating velocity based on said position information and motor current, the means for feeding back the estimated velocity value, which is obtained from said observer means, to the proportion element of said I-P controller, and the means for calculating torque command information for the motor based on the output of said I-P controller and said estimated velocity value are constituted by control means comprising a microcomputer.
References Cited (Backward Citations)
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