国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

Icing is a major hidden danger of aircraft safety. icing wind tunnel is a ground test equipment to study aircraft icing and anti-icing. The aircraft model is installed on the rotary table in the test section, and the rotating model is driven to simulate the attitude change through precise control of the rotary table. The turntable mechanism suitable for the environment of low temperature, low pressure and high humidity is developed.A turntable control system based on 317-T CPU, IM174 module and AC servo is designed. The turntable monitoring software with complete functions is developed. By parameter optimization, master-slave deviation control and full closed-loop position control, the single turntable, upper/lower or left/right turntable high-precision synchronous control of five turntable mechanisms in three test sections is realized. Solved the turntable control system under special environment operation and maintenance problems. The turntable control system has been running for more than 8 years, the angle range of the turntable is ±180°, and the accuracy of the turntable angle and synchronization control is not less than 0.02°, the technical indicators meet the design requirements, which ensures the smooth completion of various test tasks in the icing wind tunnel.