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Failure circuit suitable for nonlinear regulator

A regulator, non-linear technology, applied in electrical components, amplification control, gain control and other directions, can solve the problems of low precision, poor response, poor anti-interference ability, etc., to achieve the effect of solving low precision

Active Publication Date: 2017-08-11
FOSHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a non-linear regulator failure circuit, which avoids the use of diode tubes in the existing solutions, and solves the problems of low precision, poor anti-interference ability, and poor response caused by the existing solutions.

Method used

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  • Failure circuit suitable for nonlinear regulator
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Embodiment 1

[0013] Embodiment 1, reference figure 1 and figure 2 , a failure circuit suitable for nonlinear regulators, Vi is the voltage input signal of the failure circuit, Vo is the voltage output signal of the failure circuit, and V2 is the voltage signal of the output terminal of the second operational amplifier A2. The voltage input signal Vi is connected to the inverting input terminal of the first operational amplifier A1 through an inverter, and the first operational amplifier A1, a pair of 2-way analog switches a2, first, second, and third resistors R1, R2, and R3 constitute An inverting proportional operational amplifier circuit with optional gain, wherein the first resistor R1 is connected to the inverting input terminal of the first operational amplifier A1, and the second and third resistors R2 and R3 are used as two feedback branches of the inverting proportional operational amplifier circuit The two feedback branches are controlled by the strobe control of the 1-to-2 ana...

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Abstract

The invention discloses a failure circuit suitable for a nonlinear regulator. According to the failure circuit, a first operational amplifier, first, second and third resistors, and a pair of two-channel analog switches constitute an inverting proportional operational amplifier circuit with two different proportional gain coefficients. A window voltage comparator is used to respond to a non-sensitive region, and the proportional gain coefficient output is selected by the pair of two-channel analog switches according to a response signal. As the proportional gain coefficient is obtained using the operational amplifier and the resistors which are linear elements, the non-sensitive region will be neither instable nor inaccurate. The problem that the existing failure circuit has low precision, poor anti-interference ability and poor response is solved.

Description

technical field [0001] The invention relates to the technical field of process control systems, in particular to a failure circuit suitable for nonlinear regulators. Background technique [0002] In the process control system, the feedback proportional, integral, differential regulator (ie PID regulator) is widely used to adjust the deviation of the controlled variable, so that the actual value is consistent with the set value required by the production process, but with the automation With the development of technology and the complexity of the production process, the control performance of the PID regulator can no longer meet the requirements for the process with lag time or nonlinear process. Therefore, a nonlinear regulator with an insensitive area appears. The regulator is formed by adding a failure circuit on the basis of the PID regulator. Therefore, the failure circuit is the key circuit of the non-linear regulator with an insensitive area. It plays an important role...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03G3/30
CPCH03G3/30
Inventor 杨波
Owner FOSHAN UNIVERSITY