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US 2011/0226125 A1Published application
Electro-mechanical control system for positioning fluid motors
OwnerJames B. Johnsoninventor
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Abstract
A fluid motor and a control system that includes an electronic controller and a mechanical servo to position a fluid motor. The electronic controller is combined with a non-electronic self storing position feedback device. The electronic controller is capable of providing accurate positioning and the positioning is maintained with a mechanical servo mechanism. The fluid motor can be either hydraulically or pneumatically operated.
Claims21
A fluid motor control system comprising:
- a fluid motor, said fluid motor including a mechanical actuator,
- a source of pressurized fluid to provide a working fluid to said motor and
- a multiway control valve to control the flow of pressurized fluid to said fluid motor,
- said multiway way valve being operatively connected to a tension summing actuator,
- said tension summing actuator being operatively connected to an electronic controller by a tension line to provide a command position for the fluid motor,
- said tension summing actuator being further operatively connected to the output of the fluid motor by an additional tension line to provide a feedback command to said tension summing actuator.
3 more elements
Dependencies are inferred from the claim text.