Temperature control system

Abstract

A temperature control system comprises a plurality of distributed heat sources and a plurality of temperature sensors. Each heat source is connected with a respective power drive module, all power drive modules are controlled by a temperature controller, and a temperature control system takes a target temperature as reference input and output temperatures of the temperature sensors as feedback; tracking errors between the reference input and the output temperatures are input in the temperature controller, and the temperature controller converts the tracking errors into average errors, obtains error deviations between the average control quantity and the tracking errors and the average errors through calculation according to the average errors, obtains the superposition control quantity of each heat source according to the average errors and takes sum signals of the average control quantity and the superposition control quantities as the final output of the temperature controller. The temperature control system has the advantages of being low in dependence on single channels, high in anti-interference capacity and capable of performing uniformity control on temperatures of temperature boxes with distributed heat sources.

Description

technical field [0001] The invention belongs to the field of mechanical engineering heating, and is a control system for uniform temperature control of a temperature box with distributed heat sources, that is, a control system for controlling the temperature in the temperature box to be evenly distributed as a whole by using a plurality of heaters. Background technique [0002] The temperature box used in the composite test environment is installed at the end of the centrifuge arm and subjected to centrifugal action. Due to the existence of the temperature gradient during the heating process, the air in the temperature box is affected by the acceleration of gravity, centrifugal acceleration and Coriolis acceleration and moves, which makes the temperature field very uneven. To this end, multiple distributed heat sources are arranged on the temperature box, and multiple temperature sensors are arranged in the temperature box to form a multiple-input multiple-output (MIMO) temp...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the disadvantages that the existing uniformity temperature control system uses the designated channel as the main control channel, and uses the temperature of the main control channel as the reference input of the slave control channel, which requires high performance of the main control channel and poor anti-interference ability, the present invention Provides a uniform temperature control system with low dependence on a single channel (such as the main control channel) and strong anti-interference ability

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