Fast response control circuit

Details Fast response control circuit Fast response control circuit

1988-03-28

1990-05-22

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

With particular 'error-detecting' means

318628, 73196, G05B 700

Patent

active

049280481

ABSTRACT:
A fast response control circuit for providing an output signal in miminum time after receiving an enabling input signal. The control circuit includes an amplifier which provides an output signal having a magnitude determined by a variable input signal when the enabling input signal indicates that an output signal is desired. A feedback network and the amplifier together define a control loop which has a characteristic response time. When the enable signal is absent, a bias control biases a reactive component in the control loop so as to minimize this response time. The circuit is adapted for use in a fluid mass flow controller to provide rapid response to an enabling input signal, particularly when a very low fluid flow rate is desired.

REFERENCES:
patent: 4244517 (1981-01-01), Stanke et al.
patent: 4733152 (1988-03-01), Allington

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