Heating control method, device, equipment and medium for helicopter windshield

Abstract

The embodiment of the invention discloses a heating control method, device, equipment and medium for a windshield glass of a helicopter. The method includes: acquiring the current temperature of the windshield when the collection time is reached; determining the temperature difference that matches the temperature difference according to the temperature difference between the current temperature and the historical temperature of the windshield at the previous collection time. heating power; after controlling the heating device to heat the windshield according to the heating power, return to the operation of obtaining the current temperature of the windshield when the collection time is reached, so as to control the windshield according to a constant temperature rise Speed ​​heating to target heating temperature. The above technical solution improves the controllability of the windshield heating rate when the helicopter windshield glass defogging and anti-icing functions are turned on, ensures the normal operation of the windshield glass, and avoids the problem of overshooting of the windshield glass heating up.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of control, and in particular, to a heating control method, device, equipment and medium for a helicopter windshield. Background technique [0002] The helicopter windshield is an important structural and functional part of the helicopter. It needs to maintain good optical performance under harsh conditions such as fogging and icing, and provide the driver with a clear view to ensure driving safety. Therefore, the helicopter windshield needs to have functions such as defogging and anti-icing. [0003] The defogging function and anti-icing function of the windshield are realized by heating the windshield. A transparent resistance wire is laid in the inner layer of the windshield. After the resistance wire is powered, heat can be generated, and then the temperature of the windshield can be adjusted. At the same time, a temperature sensor is laid in the inner layer of the bottom of th...

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Problems solved by technology

Among them, the "switching method" has the advantages of fast heating and fast response, but when the ambient temperature is below zero or is about to reach the target constant temperature point, the windshield glass will easily burst when heated at full power, and the overshoot to reach the target constant temperature point is relatively small. The “duty ratio method” has the characteristics of small overshoot and high adjustment accuracy. However, the current “duty ratio method” uses fixed closed-loop control parameters, and the control conditions are affected by the current ambient temperature and heating time. Constraints such as constant temperature accuracy and other constraints will cause the windshield glass temperature to fail to reach the target constant temperature temperature point under strong convection conditions, and the windshield glass temperature will easily exceed the target constant temperature temperature point under weak convection conditions

And, when adopting above-mentioned two kinds of methods to control windshield heating, all can't realize the control of windshield temperature rising speed.

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