Feedback control methods and apparatus for electro-pneumatic control systems
First Claim
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1. An electro-pneumatic control system comprising:
- an electro-pneumatic controller; and
a secondary pneumatic power stage coupled to the electro-pneumatic controller to provide a first feedback signal from the secondary pneumatic power stage to the electro-pneumatic controller, wherein each of the secondary pneumatic power stage and the electro-pneumatic controller is configured to be coupled to a pneumatic actuator, wherein the electro-pneumatic controller is configured to receive a second feedback signal from the pneumatic actuator, and wherein the second feedback signal is separate from the first feedback signal.
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Abstract
Methods and apparatus related to feedback control for electro-pneumatic control systems are disclosed. An example electro-pneumatic control system comprises an electro-pneumatic controller and a secondary pneumatic power stage coupled to the electro-pneumatic controller to provide a feedback signal to the electro-pneumatic controller.
26 Citations
45 Claims
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1. An electro-pneumatic control system comprising:
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an electro-pneumatic controller; and a secondary pneumatic power stage coupled to the electro-pneumatic controller to provide a first feedback signal from the secondary pneumatic power stage to the electro-pneumatic controller, wherein each of the secondary pneumatic power stage and the electro-pneumatic controller is configured to be coupled to a pneumatic actuator, wherein the electro-pneumatic controller is configured to receive a second feedback signal from the pneumatic actuator, and wherein the second feedback signal is separate from the first feedback signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An electro-pneumatic controller comprising:
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an electro-pneumatic transducer; a control unit coupled to the electro-pneumatic transducer; a first input to the control unit, wherein the first input is configured to be coupled to a secondary pneumatic power stage; and a second input to the control unit, wherein the second input is configured to be coupled to a pneumatic actuator, and wherein the first and second input signals are separate input signals. - View Dependent Claims (25, 26, 27, 28)
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29. A method of controlling a pneumatically-actuated device in an electro-pneumatic control system comprising:
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detecting via a controller a first operational response of a secondary pneumatic power stage; detecting via the controller a second operational response of a pneumatic actuator; and controlling an operation of the pneumatically-actuated device based on the first and second operational responses, wherein the first and second responses are separate signals. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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Specification