Auto-compensative alternative type integrator and its controlling method

An automatic compensation and integrator technology, applied in the direction of instruments, measuring devices, electrical components, etc., can solve the problems of unable to complete longer integration, dielectric loss of integral capacitor, leakage resistance, etc., to solve the influence of temperature drift and capacitance, Effect of suppressing drift and low price

Inactive Publication Date: 2010-05-12
INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, devices such as operational amplifiers and resistors have temperature drift, and integral capacitors have dielectric loss and leakage resistance. As time goes by, the drift will become larger and larger.
Therefore, a longer time integration cannot be completed with only one integrator

Method used

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  • Auto-compensative alternative type integrator and its controlling method
  • Auto-compensative alternative type integrator and its controlling method
  • Auto-compensative alternative type integrator and its controlling method

Examples

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Embodiment Construction

[0039] see figure 1 , in this example, using figure 1 The automatic compensation low zero drift integrator shown is an integration unit, and the preparation phase and integration phase in the working process of the integration unit have been specifically described in the background art.

[0040] see figure 2 , in this embodiment, two-way integration units are set, including integration unit A and integration unit B, the unit signal input terminals ViA and ViB of the two-way integration units are alternately connected to the integration signal input terminal Vi through a switch, and the two-way integration unit The signal output terminal of the unit is provided with an accumulation circuit, and the unit integration signals VoA and VoB respectively output by the integration unit A and the integration unit B are input into the accumulation circuit, and the integration voltage Vo is output through the accumulation operation of the accumulation circuit.

[0041] see image 3 , ...

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Abstract

The auto-compensation alternative integrator comprises auto-compensation low-zero-drift integrators as two-way integration units A and B with their signal inlets ViA and ViB turned on alternatively tointegration signal inlet Vi through a switch, accumulation circuits on outlets of integration units to receive the output of VoA and VoB as the unit integration signal from A and B, and the integration voltage Vo. This invention can run for long time.

Description

Technical field: [0001] The invention relates to an integrator and a control method thereof, more specifically to a long-time integrator with an integral time of more than 100s and a control method thereof. Background technique: [0002] Long time integrators are mainly used in electromagnetic measurements of some devices. For example, in the process of tokamak discharge experiment, the output of many electromagnetic measurement diagnostic signals is the differential component of the signal. To restore the signal, an integrator is needed. With the continuous development of tokamak nuclear fusion research, the discharge time of plasma is getting longer and longer, so the integration time is also required to be longer and longer. The discharge time of EAST just built by the Institute of Plasma Physics, Chinese Academy of Sciences will reach thousands of seconds. class. However, due to the existence of drift, the general analog integrator can work effectively for tens of seco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K19/00G01R31/00G01R33/00
Inventor 季振山王勇罗家融
Owner INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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