Sound Pressure Level Feedback Control
AssigneeFisher Controls International LLC
InventorFrederick W. Catron
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for predicting internal sound pressure within a flow passage, by measuring a vibration velocity response of a wall of the flow passage, for example, using accelerometers. A radiation model may then be used for predicting externally radiated sound pressure to provide feedback to control a process control system. Methods and systems are also provided for predicting externally radiated sound pressure based on internally-mounted pressure transducer sensor data.
Claims6
A method of controlling noise associated with a valve used for venting a pressure vessel during a venting process, the method including:
- providing a vent line for venting pressurized fluid from a pressure vessel;
- providing a vent line control valve to regulate the flow of fluid within the vent line;
- providing at least one sound pressure transducer downstream of the vent line control valve;
- providing a valve controller operatively connected to the vent line control valve and the at least one sound pressure transducer;
- and
- using signals from the at least one sound pressure transducer as inputs to the valve controller in order to control valve travel of the vent line control valve to vent pressurized fluid from the pressure vessel while maintaining noise levels at or below a predetermined maximum noise level.
A system for controlling noise associated with a valve used for venting a pressure vessel during a venting process, the system including:
- at least one vent line for venting pressurized fluid from a pressure vessel;
- a vent line control valve to regulate the flow of fluid within each vent line;
- at least one sound pressure transducer downstream of the vent line control valve;
- a digital valve controller operatively connected to the vent line control valve and the at least one sound pressure transducer, the digital valve controller programmed to use signals from the at least one sound pressure transducer as inputs to the digital valve controller in order to control valve travel of the vent line control valve to vent pressurized fluid from the pressure vessel while maintaining noise levels at or below a predetermined maximum noise level.
Dependencies are inferred from the claim text.