| With continuous development of modern technology, the aviation industry changesgreatly. The propeller-driven aircraft drops out of the historical stage gradually; instead, it isthe jet aircraft which flies faster. However, the propeller-driven aircraft has an irreplaceableposition in the transport field with its strong traction, less oil consumption and highpropulsive efficiency in flying. Currently, many large transport airplanes, early warningairplanes and unmanned planes in China all adopt turboprop engines used as their power plant.For this reason, the propeller slip flow wind tunnel test technology is important in somepneumatic institutes. The propeller slip flow wind tunnel test refers to the simulation one donefor the power plants of different types of aircrafts in the wind tunnel.The wind tunnel test with propeller is a special one involved in multi-disciplines. Thetesting technique keeps improving with development of the test equipment. The slip-flowelectric motor is the key equipment for dynamic tests. It is very difficult in designing andprocessing of its kind at home because more technical problems such as small mechanical size,big output torque and high-speed operation should be handled. The design scheme based onthe slip-flow test system with CAN bus intelligent nodes is put forth in the paper. It introducesfeatures of CAN bus control, working principles of hardware and the project of the propellerslip flow wind tunnel test software control system.The article also devises a protection systemaim at the high heat from the electric motor, the development and applications of high-speedlarge torque slip test. In addition, through proform the low-speed tunnel test, the reliabilityand repeatability of the slip flow test control system and the interference of the four hairsmooth flow experiment data acquisition system have been tested. Moreover, the hardwareanti-jamming measures are given with the field experiences. |
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