Control system for longwall shearer

Details Control system for longwall shearer Control system for longwall shearer

1985-10-24

1987-01-06

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Automatic control; signaling or indicating

Of hard material disintegrating machine

299 42, E21C 2720, E21C 3508

Patent

active

046341862

ABSTRACT:
A control system for controlling the elevation of a cutter of a longwall shearer in which the attitude of the body of the shearer and the rate of change of attitude with longitudinal movement of the shearer are monitored and the elevation of the cutter is varied as a function of the sum of the product of a first constant times attitude and the product of a second constant and the rate of change of attitude.

REFERENCES:
patent: 4120534 (1978-10-01), Addison
patent: 4371209 (1983-02-01), Alford et al.
patent: 4531782 (1985-07-01), Ford et al.

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