Design Of The New Automatic Load Balance Calibration System

Wind tunnel balance is the key core equipment of aircraft aerodynamic wind tunnel test,and the balance calibration device is standard equipment for special measurement of wind tunnel balance calibration.Its performance directly affects the performance of the balance,thereby affecting the accuracy of aircraft aerodynamic wind tunnel aerodynamic test results.Worldwide aerodynamic testing facilities attach great importance to the development of balance calibration system.This thesis discusses the development of automatic six-component strain balance body shafting calibration system,which support 1.2m wind tunnel of AVIC.This thesis introduces the total functional requirements of train large load balance calibration system and we researching the balance calibration system at home and abroad.According to the State of balance calibration system,trends and project requirements,we determine the hardware system which should be used,and then we design the whole control plan and the automatic load control system of calibration station after This thesis studies the methods and principles of the weight loading and the power generator loading,analytics the advantages and disadvantages of two programs,and then we decide to utilize the power generator loading plan.Secondly,we study the ways of calibrating for body shafting balance calibration station and ground shafting balance calibration station,and then we determine the balance calibration station plan as body Shafting.We analysis the advantages and disadvantages of parallel mechanism and serial mechanism for resetting system,and then we determine the resetting system plan as parallel mechanism.Basing on the above,we establishes the whole control program.Combining with the whole control system program,we design the automatic loading control system specially.We describe the control system principles and the usage and function of servo drive in automatic load control system design in detail.We especially introduce the wiring method of servo system based on CAN bus and the writing method of manual control program.At last we introduce the system control process and the software interface.