Method for improving the range of stable control of the pneumati

Details Method for improving the range of stable control of the pneumati Method for improving the range of stable control of the pneumati

1995-01-23

1996-10-22

Spitzer, Robert

Gas separation: processes

With control responsive to sensed condition

Pressure sensed

95 82, 96102, 96103, B01D 1508

Patent

active

055672272

ABSTRACT:
A frequency response of a pneumatic system used to control a gas chromatograph may be determined by applying a loop-closed direct method. The loop-closed direct method can be used to describe a frequency response of a time-invariant, linear system and predicting the system stability for any input signal. The transfer function which describes the frequency response is used by a microprocessor to control the physical parameters of the pneumatic system in terms of pressure and flow.

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patent: 5391221 (1995-02-01), Fukushima et al.
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