Electrohydraulic control system for a rockdrill assembly

Details Electrohydraulic control system for a rockdrill assembly Electrohydraulic control system for a rockdrill assembly

1983-01-07

1986-07-15

Krass, Errol A.

Boots, shoes, and leggings

173 11, 173 43, 901 9, 901 15, 901 22, B25J 1100

Patent

active

046010009

ABSTRACT:
An electrohydraulic control system for an arm assembly of the type described in U.S. Pat. No. 4,364,540 utilizes an electric computer (microprocessor) which receives a nonlinear or harmonic signal from the rotary hydraulic motor of the arm of this assembly and converts the harmonic signal into a linear signal which is applied to a comparator as the value signal for comparison with a command signal from the computer. Similar comparators are provided for each of the hydraulic operators and the sensors thereof can provide direct actual value inputs to these comparators.

REFERENCES:
patent: 3845284 (1974-10-01), Taguchi et al.
patent: 3896885 (1975-07-01), Dahlstrom et al.
patent: 4076131 (1978-02-01), Dahlstrom et al.
patent: 4113033 (1978-09-01), Lindbald
patent: 4156835 (1979-05-01), Whitney et al.
patent: 4229136 (1980-10-01), Panissidi
patent: 4230189 (1980-05-01), Mashimo
patent: 4240511 (1980-12-01), Mashimo
patent: 4260941 (1981-04-01), Engelberger et al.
patent: 4267892 (1981-05-01), Mayer
patent: 4335443 (1982-06-01), Dickey
patent: 4343367 (1982-08-01), Mashimo
patent: 4364540 (1982-12-01), Montabert
patent: 4403281 (1983-09-01), Holmes et al.
patent: 4410049 (1983-10-01), Molin
patent: 4498544 (1985-02-01), Molin
patent: 4514796 (1985-04-01), Saulters et al.

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