Automatic control system with integrator offset

Details Automatic control system with integrator offset Automatic control system with integrator offset

G - Physics

05

B

341/114

G05B 11/36 (2006.01) G05B 5/01 (2006.01) G05B 11/42 (2006.01)

Patent

CA 1105119

AUTOMATIC CONTROL SYSTEM WITH INTEGRATOR OFFSET Abstract of the Disclosure An automatic control system wherein repetitive pulses, the frequency of which is responsive to a remote condition, such as prime mover RPM, are converted to a DC voltage level. The voltage level is compared to a reference by a difference amplifier to produce an error signal. Further signals are produced from the error signal, including an inte- gral thereof, which signals are ultimately used to control the remote condition. The integrator is provided with an offset circuit to prevent saturation thereof during override of the normal control signal by an external limit signal as, for example, excessive engine temperature or smoke output.

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