METHODS AND APPARATUS TO CONTROL AND/OR MONITOR A PNEUMATIC ACTUATOR
First Claim
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1. An apparatus, comprising:
- a processor to execute a control application;
a position sensor to monitor a position of a valve coupled to a pneumatic actuator, the position sensor to provide position information of the valve to the control application; and
a latching valve to provide a pneumatic signal to the actuator, the latching valve and the pneumatic signal to be controlled by the control application based on at least one of the position information or a control signal from a separate device in a process control system.
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Abstract
Methods and apparatus to monitor and/or control a pneumatic actuator are disclosed. An example apparatus includes a processor to execute a control application, a position sensor to monitor a position of a valve coupled to a pneumatic actuator, the position sensor to provide position information of the valve to the control application, and a latching valve to provide a pneumatic signal to the actuator, the latching valve and the pneumatic signal to be controlled by the control application based on at least one of the position information or a control signal from a separate device in a process control system.
47 Citations
24 Claims
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1. An apparatus, comprising:
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a processor to execute a control application; a position sensor to monitor a position of a valve coupled to a pneumatic actuator, the position sensor to provide position information of the valve to the control application; and a latching valve to provide a pneumatic signal to the actuator, the latching valve and the pneumatic signal to be controlled by the control application based on at least one of the position information or a control signal from a separate device in a process control system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method, comprising:
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processing control settings via a processor in a control device mounted to a pneumatic actuator coupled to a valve, the control device comprising a position sensor; monitoring a position of the valve via the position sensor; and providing a pneumatic signal via the control device to the actuator to move the valve, the pneumatic signal determined based on the control settings and the monitored position of the valve. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A tangible machine readable storage medium comprising instructions which, when executed, cause a machine to at least:
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process control settings via a processor in a control device mounted to a pneumatic actuator coupled to a valve, the control device comprising a position sensor; monitor a position of the valve via the position sensor; and provide a pneumatic signal via the control device to the actuator to move the valve, the pneumatic signal determined based on the control settings and the monitored position of the valve. - View Dependent Claims (22, 23, 24)
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Specification