Electricity: motive power systems – Positional servo systems – Multiple mode systems
Patent
1977-03-24
1980-12-23
Rubinson, Gene Z.
Electricity: motive power systems
Positional servo systems
Multiple mode systems
318636, 318560, 73146, 73 66, 73460, 73462, 157 13, 51106R, 51DIG33, 51165R, 328151, 307353, G05B 1118
Patent
active
042413001
ABSTRACT:
An electronic circuit with an output that may be used, for example, to control a servo system which positions grinders of a tire grinding machine to correct tires with large cleats is disclosed. The electronic circuit is responsive to an analog electrical signal to detect whether or not the rate of change in amplitude of the analog electrical signal equals or exceeds a preselected limit. If the rate of change in amplitude of the analog electrical signal does not equal or exceed the preselected limit, the output of the electronic circuit has a characteristic that is similar to the analog electrical signal. If the rate of change in amplitude of the analog electrical signal equals or exceeds the preselected limit, the output of the electronic circuit preferably remains constant at an amplitude which the analog electrical signal attained prior to the change in amplitude at a rate equal to or in excess of the preselected limit. Broadly, the electronic circuit functions as a slope discrimination system which permits passage of an analog electrical signal if the rate of change in amplitude is below a predetermined rate but blocks passage of the analog electrical signal when the rate of change in amplitude reaches or surpasses the predetermined rate. Circuitry is preferably provided to adjustably preset the value for the preselected limit. Additional circuitry is preferably provided to facilitate automatic reset during operation.
REFERENCES:
patent: 3100875 (1963-08-01), Peterson
patent: 3719813 (1973-03-01), Friedman et al.
patent: 3835591 (1974-09-01), Cimprich
patent: 3839650 (1974-10-01), Wood
Hayes Richard H.
Herrmann Robert W.
Eagle-Picher Industries, Inc.
Indyk Eugene S.
Rubinson Gene Z.
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