Apparatus for controlling operating stroke of reciprocating memb

Details Apparatus for controlling operating stroke of reciprocating memb Apparatus for controlling operating stroke of reciprocating memb

1990-03-07

1991-07-16

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

408 9, 408 6, 318282, 318560, B23B 3500

Patent

active

050327780

ABSTRACT:
An apparatus for controlling an operating stroke of a reciprocating member to be reciprocated by a drive motor. The apparatus includes an encoder adapted to generate pulses each of which corresponds to a predetermined incremental distance of movement of the reciprocating member, a counter for counting the pulses during movement of the reciprocating member in a forward direction, a device for converting the operating stroke into the number of the pulses corresponding to a multiple of the incremental distance of movement, and a residual distance which is a difference between the operating stroke and the multiple, a device for converting the residual distance into a corresponding residual time, and a device for commanding the drive motor to stop an operation thereof causing a further forward movement of the reciprocating member, when the residual time has elapsed after a count of the counter is equal to the above-indicated number of the pulses.

REFERENCES:
patent: 4229683 (1980-10-01), Watanabe et al.
patent: 4318646 (1982-03-01), Watanabe
patent: 4342528 (1982-08-01), Nozu et al.
patent: 4692072 (1987-09-01), Pfister et al.

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