Active thermal control method for aircraft servo motor based on variable density structure micro-channel heat sink performance regulation and control

Abstract

The invention provides an aircraft servo motor active thermal control method based on variable density structure micro-channel heat sink performance regulation and control, and the method comprises the steps: firstly analyzing the heating characteristics of a servo motor, and determining the non-uniform temperature field distribution condition of a circumferential housing of the servo motor and the heat dissipation demands of each part; then designing a micro-channel heat sink variable-channel density configuration based on this, performing regenerative cooling by using aircraft low-temperature fuel as a cooling working medium, and improving the heat dissipation performance and uniformity of the servo motor in a manner that multiple cooling channels of the heat sink cling to the outer surface of the circumferential shell of the motor in parallel, thereby meeting the constraint of small volume; extra cooling working media do not need to be carried; and finally, designing an active thermal control system of the servo motor, establishing a thermal model of the servo motor introducing a cooling performance function, designing a thermal control algorithm of the servo motor, and improving the working temperature fluctuation caused by the change of the operating state of the servo motor by regulating and controlling the operating parameters of the micro-channel heat sink.

Description

technical field [0001] The present invention is in the technical field of thermal control of servo motors, in particular to an active thermal control method for aircraft servo motors based on the performance regulation of heat sink performance of micro-channels of variable density structures. Background technique [0002] High-power electric servo systems are more and more widely used in high-speed aircraft. Servo motors are the key components for electric servo systems to convert electrical energy into mechanical energy. Therefore, the performance of servo motors directly affects the performance and control quality of aircraft. At present, the main factor that inhibits the working performance of high-power servo motors is no longer torque and power, but its too high working temperature. High temperature will lead to safety hazards such as overheating and burnout of the motor, degradation of component performance, insulation and reliability, especially for high-power servo m...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the serious temperature rise of high-power servo motors, the existing cooling device has a large volume and insufficient heat dissipation performance, which does not meet the requirements of small size and light weight in the aircraft field, and it is difficult to cope with temperature fluctuations caused by non-uniform temperature distribution of the motor and changes in the operating state of the motor and other problems, the present invention proposes an active thermal control method for aircraft servo motors based on the regulation and control of heat sink performance in micro-channels with variable density structure

Images