Patent ID: 8468931
Filing Date: 2013-06-25
Classification: B66F,F15B

Abstract:
1. A fluid motor control system comprising: a fluid motor including a mechanical actuator, said fluid motor having an input and output source; a source of pressurized fluid to provide a working fluid to said input of said fluid motor; a multiway control valve to control the flow of said pressurized fluid to said input of said fluid motor, wherein said multiway way valve is operatively connected to a tension summing actuator using a valve actuator; said tension summing actuator is operatively connected to said stepper motor by a tension command line and thereby provides a command position for said fluid motor, said stepper motor operatively rotates a spool connected to said tension command line; said tension command line is an elongated tape member; said tension summing actuator being further operatively connected and indirectly cooperates with said output of said fluid motor by a tension feedback line and thereby provides a feedback command to said tension summing actuator; and limit switches in operative relationship with said tension command line and said tension feedback line that generate an electrical signal when either an excessive positional error or object detection occurs.