Method of controlling cylinder apparatus

Motors: expansible chamber type – Working member position feedback to motive fluid control – Electrical input and feedback signal means

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91389, 91393, 60469, F15B 1316

Patent

active

054310865

ABSTRACT:
A method of controlling a cylinder apparatus includes the steps of supplying compressed air of a first high pressure to one chamber of a cylinder which is divided into two chambers by a piston, and exhausting air from the other chamber so as to move the piston from the start position at an end portion of one chamber toward an end position at an end portion of the other chamber along the extending direction of the cylinder, and detecting if the position has passed the position of a sensor. In addition, a moving speed of the piston is decreased by supplying air of a second high pressure lower than the first high pressure to the other chamber after an elapse of a predetermined wait time from when the piston has passed the position of the sensor, so that the piston reaches the end position in a shock-free state.

REFERENCES:
patent: 4399653 (1983-08-01), Pylat
patent: 4651621 (1987-03-01), Eastman
patent: 4901625 (1990-02-01), Bussan et al.

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