Two-position adjusting method for temperature control method based on passive variable thermal resistance

Abstract

The invention provides a two-position adjusting method for a temperature control method based on passive variable thermal resistance. A semiconductor temperature difference module for realizing passive variable thermal resistance is arranged between a temperature control object and an environment where the temperature control object is located, and the maximum thermal resistance and the minimum thermal resistance are controlled through two-position adjustment according to acquired temperature signals, so that the heat flow is changed, and the temperature control is realized. The two-position adjusting method is low in cost, easy to realize and high in cost performance; two-position control of the semiconductor temperature difference module is combined, no moving part and no deviation areaare provided, and the control precision is higher; if the two-way active temperature control of the semiconductor refrigeration is matched, the temperature control precision can be further improved through the variable heat resistance. According to the two-position adjusting method, the temperature control precision can be effectively improved, and the two-position adjusting method can be widely applied to high-precision temperature control in different temperature areas.

Description

technical field [0001] The invention relates to a two-position adjustment method for passive variable thermal resistance temperature control, in particular to a two-position adjustment method for the passive variable thermal resistance temperature control method based on a semiconductor temperature difference module. Background technique [0002] Temperature is the most important controlled parameter, and high-precision temperature control has extremely wide application requirements and prospects. The temperature control system contains a pure hysteresis link, the heating / cooling actuator has a certain inertia, the inhomogeneity and thermal inertia of the controlled object, as well as the load change and external disturbance, which are easy to cause the system overshoot and oscillation and the change of the system parameters. This random and unpredictable change will undoubtedly increase the difficulty of realizing high-precision temperature control. [0003] The two-positi...

AI Technical Summary

Problems solved by technology

It sets semiconductor temperature difference modules between the heating actuator and cooling actuator of the temperature control device and the temperature control object, and the environmental fluctuations and disturbances are indirectly fed back through the temperature change of the temperature control object, which cannot respond to the influence of environmental fluctuations and disturbances in time; the control algorithm also Environmental fluctuations and disturbances are not taken into account; base thermal resistance reduces the efficiency of heating and cooling actuators and increases power consumption

Images