Apparatus for controlling attitude of vehicle mounted device

Details Apparatus for controlling attitude of vehicle mounted device Apparatus for controlling attitude of vehicle mounted device

1986-08-12

1989-11-14

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

Limit or end-stop control

318566, 318468, 318739, G05G 500

Patent

active

048810207

ABSTRACT:
An imaginary limit position is determined on the basis of a position where an overload condition is detected, and such imaginary limit position is stored. Subsequent to the storage, an extent of movement is limited to that defined by the limit position. An operational mode which re-establishes a stored position is provided. In response to the detection of an overload condition, a motor is reversed to move the attitude back through a small stroke, whereupon the motor is deenergized. When a manual switch is turned on, the motor is driven over an incremental time interval and is then deenergized temporarily. After a given time interval, the motor is again driven. Where a pluarlity of motors are driven simultaneously, the timing of initiating to drive each motor is displaced relative to each other by a small time increment during which a transient current occurs upon initiating the drive.

REFERENCES:
patent: 3597554 (1971-08-01), Siegal
patent: 3626130 (1971-12-01), Siegal
patent: 4204255 (1980-05-01), Cremer
patent: 4401928 (1983-08-01), Kamijo et al.
patent: 4404632 (1983-09-01), Harada et al.
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patent: 4503504 (1985-03-01), Suzumura et al.
patent: 4540252 (1985-09-01), Hayashi et al.
patent: 4638982 (1987-01-01), Misher et al.

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