Development And Design Of Servo Performance Test Module For An Antiaircraft Artillery

Servo component is an important unit of modern automatic anti-aircraft gun and artillery,which can control the movement of the automatic artillery in both the pitch and azimuth by executing fire control instructions.Its performance plays an important role in determining the operational performance of the whole equipment.Therefore,it is necessary to test the performance of the servo component to confirm the state and service characteristics of the product during the production and service maintenance process.In order to solve the testing problem of servo unit for a certain type of antiaircraft gun,a dedicated automatic test system is developed and designed to realize efficient and fast test and data analysis of the servo component.Based on the framework of FPGA+ARM,the functional requirements,working principles and key technologies of test-oriented control board are elaborated in detail firstly.Then,the principle and design results of the key components are introduced one by one.Meanwhile,the design of the ARM control program,USB interface program and FPGA logic are introduced,and the implementation of smoothing algorithm in the process of generating command,frame management of testing data and flow control are particularly analyzed.Finally,the design and test process of control software and control logic of FPGA by using UVision 4 and Quartus II are introduced.Experiment and application results show that high-precision acquisition of 16 analog signals with a data resolution of 16 bits and a maximum sampling rate of 100 KSPS are realized by the designed control board.The test command generation of various motion modes are realized,such as complete sinusoidal gun adjustment,constant velocity movement,turn of large or small angle,static positioning and so on with reliable and stable smoothing motion function.The expected design objective is achieved.