Development Of The Control System For The Support Device Of Parachute Wind Tunnel Test In The Vertical Wind Tunnel

The parachute wind tunnel test is an important technical link to obtain the aerodynamic characteristic parameters of the parachute's actual free falling process.A set of parachute test support system based on vertical wind tunnel is needed to meet the needs of many domestic parachute test and development units in China.The core of the control system of the vertical wind tunnel parachute test support system is the motion control system with three degrees of freedom.through the analysis of the control system for the functional requirements and technical indicators,based on the understanding of the motion control system of research and development at home an abroad,put forward to the main control machine,the control button station,manmachine interface,PLC control system,AC servo motor,AC servo driver and absolute encoderas the core components of the system.Since the three degrees of freedom of the system require higher accuracy for motion speed and displacement,the full closed loop servo control mode is adopted,which effectively meets the accuracy requirement of the system technical index.STEP7 is used as the development platform to design the core control program,and the speed of motion and the function of positioning control are realized.The WINCC flexible ie used to develop the man-machine interface software to realize the man-machine interface software to realize the man-machine meeting function configuration and the communication with the PLCcontrol system,The Labwindows/CVI software is used to develop the control software interface,which can communicate with the PLCcontrol system,and can monitor the running state of each degree of freedom in real time.finally,the whole system debugging is carried out,the system operation is stable,and the related technical requirements are met well.