The Development Of Model Gesture And Test Accessories Control System For Low-speed Wind-tunnel

Wind-tunnel test technique is a general method used to study the aerodynamic characteristics of aircraft whichi is in variable attack angle and variable yawing angle.The model gesture equipment is the core device of this technique. The electronic components of its control system is aging and the reliability is falling, it has not satisfied our customers established new requirements, so it is urgent to develop a new control system.This paper presents the research and development situation of the wind-tunnel test technique and PXI technique, describes the importance and urgency for developing the new control system, combines with development trend of electromechanical, presents project of model gesture and test accessories control system based on properties and function requirements of new control system. The core parts of control system consists of IPC, PXI Classis, PCI/PXI Connect Card, Multi-Channel Analog Output Cards, Timer/Counter Card, Digital I/O Board, AC servo motor and AC servo driver, AC motor and inverter, Step motor and its driver. The paper demonstrates CompactPCI/ PXI bus, inverter, AC servo and PLC control technique so on, using above technique consists kinds of sub-system, and analyses its components and control principle. Control software is developed aiming at functions of the device, and based on Labwindows/CVI software platform. The new control system and wind tunnel measurement and control system constitute LAN, realized network communication and control.In practice, the system has been static and dynamics tested successfully according the need of tests. It has succeeded in applying model test and offered reliable test platform for development of aircrafts and under water weapons.