| The artillery vertical stabilizer can automatically stabilize the artillery barrel during travel to ensure that the given pitch angle of the artillery barrel is not affected by the vibration and tilt of the vehicle body.In order to test and evaluate the performance of the vertical stabilizer in the experimental environment,a load simulation system is required to simulate its actual load.In this paper,an electro-hydraulic load simulation system for testing of artillery vertical stabilizer control performance was designed and studied to meet the needs of automation,standardization,and efficiency of artillery testing process,which was of great significance for the research and application of artillery.The main research contents and conclusions of the paper are as follows:Firstly,the principles and evaluation indexes of load simulation system were explained,the development and research status of load simulation system in China and foreign countries were summarized,and the advantages and disadvantages of mechanical,electrohydraulic and electric ones were compared and analyzed.The electro-hydraulic system was selected and the design scheme was determined,including the design of mechanical,hydraulic and measurement and control module,in view of the large and complex load on the artillery vertical stabilizer system.Secondly,the parameter calculation,structural design and components selection were carried out according to the functional requirements and design indexes of the load simulation system;then,the mathematical models of the artillery vertical stabilizer system and the loading system and the AMESim simulation model based on the joint simulation platform were established,and the control performance of the PID algorithm and the fuzzy PID algorithm were compared through simulation analysis.The results show that the fuzzy PID control algorithm has a faster response and higher tracking accuracy for the input signal compared with the traditional PID control algorithm.Finally,a load simulation system test platform was designed and the experiment was carried out to verify the performance of the vertical stabilizer.The results show that the control performance of the fuzzy PID control algorithm in position control as well as force control is better than that of the traditional PID control,the tracking error is significantly reduced,and the experimental results agree well with that of the simulation. |
