Output model for controlling simulation thermal resistance through servo motor and operation method thereof

Abstract

The present invention provides an output model for controlling simulation thermal resistance through a servo motor and an operation method thereof. The servo motor drive circuit in the model is connected between a single chip microcomputer and a servo motor. The servo motor is connected to a precision potentiometer through a coupler. One end of a feedback circuit is connected to the output end of the precision potentiometer, and the other end is connected between the single chip microcomputer and a sampling resistor. The method comprises the steps of (1) allowing the precision potentiometer and the sampling resistor to be in series connection, (2) calculating the actual output resistance Rout of the output model, (3) outputting a pulse signal to the servo motor drive circuit, and the servo motor is driven to rotate. Compared with the prior art, according to the output model and the operation method provided by the invention, the defects of discontinuous output resistance, poor output precision, output resistance non-linear change and poor anti-interference ability are overcome, and the requirement of verifying an intelligent component according to the resistance output model is satisfied.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to an output model of a thermal resistance controlled by a servo motor and an operation method thereof. Background technique [0002] Intelligent transformer is the result of continuous integration of computer technology, power electronics technology, communication technology and transformer technology, and is mainly composed of basic transformer components and intelligent components. Among them, the intelligent component is the core part of the intelligent transformer. [0003] Signals such as the oil surface temperature of the transformer and the ambient temperature are important contents for the monitoring of transformer intelligent components. At present, there is no resistance output model for verification of the temperature measurement function of smart components. The existing resistance output models that can simulate the temperature measurement principle of smart compon...

AI Technical Summary

Problems solved by technology

[0007] Due to the small voltage difference across the variable resistors, the voltage dynamic range is narrow

After the model is connected to the smart component, if a relatively large voltage signal is introduced from the connection port, the model may fail or the voltage dynamic range will be further reduced, which cannot meet the requirements for verifying the smart component

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