Multi-dimensional force sensor constant temperature system and control algorithm thereof

Abstract

The invention provides a multi-dimensional force sensor constant temperature system, which comprises a shell provided with at least one cavity, and a temperature monitoring device, a processor, a temperature control device and a heating device which are arranged in the shell, wherein the shell is provided with at least one detection position; the temperature monitoring device is configured to collect temperature data of the detection position and output a temperature signal according to the temperature data; the processor is connected with the temperature monitoring device and is configured to receive the temperature signal and output a heating signal according to the relation between the temperature signal and a preset threshold value section; the temperature control device is connected with the processor and is configured to receive the heating signal and output an adjusting signal according to the heating signal; and the heating device is connected with the temperature control device and is configured to receive the adjusting signal and keep the temperature of the detection position within a preset temperature range according to the adjusting signal. Through the constant temperature system, the calibration and test temperature of the multi-dimensional force sensor is kept constant, and the detection precision of the multi-dimensional force sensor is improved.

Description

technical field [0001] The invention relates to a multi-dimensional force sensor constant temperature system. Background technique [0002] The multi-dimensional force sensor is the key instrument for measuring the test parameters when the test model performs the mechanical test of fluid mechanics in the simulated wind field. The strain of the existing multi-dimensional force sensor will be affected by the change of ambient temperature, and the heat conductivity of the housing of the multi-dimensional force sensor is poor. Before the test, the parameters need to be calibrated in a constant room temperature environment. During the test, to avoid temperature stress effects, the temperature should ideally be maintained at the same temperature as during calibration. However, in the actual test, it was found that due to the influence of heat conduction, radiation and a small part of convective heat transfer, the temperature at the monitoring point of the multi-dimensional force...

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Problems solved by technology

However, in the actual test, it was found that due to the influence of heat conduction, radiation and a small part of convective heat transfer, the temperature at the monitoring point of the multi-dimensional force sensor dropped by as much as 10°C within 2 minutes of the test time, and the resulting temperature stress had a great influence on the test results. Accuracy has a non-negligible impact

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