FLUID REGULATOR, ACTUATOR, AND METHOD OF IMPROVING STABILITY OF A FLUID REGULATOR

摘要

An actuator (16) for a fluid regulator includes two or more control springs (46,48) operatively connected to a diaphragm (50) such that at least two of the control springs (46,48) bias the diaphragm (50) independently in parallel and have different natural frequencies. A method for retrofitting a prior art actuator to include a second control spring is also disclosed.