Control system for doser actuator having improved resolution

Details Control system for doser actuator having improved resolution Control system for doser actuator having improved resolution

1985-12-23

1988-05-03

Ruggiero, Joseph

Boots, shoes, and leggings

91363R, 318624, 364177, 364183, G05B 1101, F15B 909

Patent

active

047424656

ABSTRACT:
The invention is a control system for generating time modulated pulse signals to effect movement of a doser type actuator. The control system is characterized in that it includes an augmenter circuit which generates a first correction signal additive to scheduled control signals when the actuator fails to respond or has a response below a predetermined limit to an actuating pulse, a second correction circuit which generates a correction signal proportional to the magnitude of the first movement of the actuator response to a pulse signal for reducing the magnitude of the pulse signal in proportion to the magnitude of the movement, and a gating signal or circuit which blocks said first and second correction signal generating circuits generating the augmentation signal when the movement of the actuator in response to a pulse signal is negative or above a predetermined limit, when the positional error changes direction, or when the actuator position is within the desired deadband limits.

REFERENCES:
patent: 3976925 (1976-08-01), Rudich, Jr.
patent: 4006346 (1977-02-01), Pemberton
patent: 4007361 (1977-02-01), Martin
patent: 4052642 (1977-10-01), Speth et al.
patent: 4256017 (1981-03-01), Eastman
patent: 4265163 (1981-05-01), Arao et al.
patent: 4366743 (1983-01-01), Leszczewski
patent: 4396975 (1983-08-01), Kurakake
patent: 4604681 (1986-08-01), Sakashita

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