Electricity: motive power systems – Positional servo systems – 'reset' systems
Patent
1981-10-02
1983-12-20
Dobeck, B.
Electricity: motive power systems
Positional servo systems
'reset' systems
318448, 318611, 290 40R, G05B 1136
Patent
active
044220251
ABSTRACT:
The control circuit employs a controller having an I-member and a servo-motor whose rate of adjustment is limited and which is associated with a follow-up. The follow-up enables the operative movement of the servo-motor to act on a comparator in the control circuit between the output of the controller and the input of the servo-motor. The output of the comparator is also connected to attenuating means which are operative in the entry path of the I-member. The attenuating means includes a functions pick-off and a multiplier element. The functions pick-off delivers an output signal which is lower for a high absolute value of its input signal than for a low absolute value. This output signal acts via the multiplier element on the entry path of the I-member.
REFERENCES:
patent: 3698829 (1972-10-01), Kubo
patent: 4096426 (1978-06-01), Tremaine et al.
patent: 4139811 (1979-02-01), Klinger
patent: 4143311 (1979-03-01), Lee
patent: 4335341 (1982-06-01), Ogasawara
Dobeck B.
Sulzer Brothers Limited
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