三轴气浮台推力分配设计  

Thrust Allocation Design of Three-Axis Air Bearing Test Bed

作　　者：陈志明[1] 骆州淮 吴云华[1] CHEN Zhiming;LUO Zhouhuai;WU Yunhua(Nanjing University of Aeronautics and Astronautics,Nanjing 210000,China)

机构地区：[1]南京航空航天大学,南京210000

出　　处：《电光与控制》2021年第9期65-69,共5页Electronics Optics & Control

基　　金：国家自然科学基金(61673212,61973153)。

摘　　要：三轴气浮台的冷气系统设计直接影响到控制系统的精度和冷气消耗量。对三轴气浮台冷气控制中的推力分配问题进行了研究,针对冗余的推力分配问题,设计了两种可以优化三轴气浮台推力分配的方法,从经济性、精确性等多个角度对推力分配进行了相应的理论分析和实验研究。通过数学仿真和实验验证了所提方法的合理性和有效性,研究结果满足了在给出期望力矩后能够快速找到较优的冷气推力分配方案的要求,简化了推力分配的步骤,并且有效解决了推力器冗余分配造成冷气浪费的问题,同时使冷气控制精度在设计范围内。最后的实验结果显示冷气控制下稳定误差在0.4°以内,完成了一次只用4个推力器实现姿态控制的任务。The design of the air conditioning system of the three-axis air bearing test bed directly affects the accuracy of the control system and the air-conditioning consumption. In this paper,the thrust allocation problem in the air conditioning control of the three-axis air bearing test bed is studied. Aiming at the redundant thrust allocation problem,two methods are designed to optimize the thrust allocation of the threeaxis air bearing test bed. The corresponding theoretical analysis and experimental research are carried out from the perspectives of expense and accuracy. The rationality and effectiveness of the proposed method are verified by mathematical simulation and experiment. The research results meet the requirements of finding a good cold air thrust allocation scheme quickly after the expected torque is given,the steps of thrust allocation are simplified,and the problem of waste of cold air caused by the redundant allocation of the thruster is effectively solved,and the control accuracy of air conditioning is within the design range. The experimental results show that the accuracy of air-conditioning control can reach 0. 4°,and the task of attitude control with only four thrusters at a time is realized.

关 键 词：三轴气浮台 冷气系统 推力分配 优化算法 查表法 

分 类 号：V416.8[航空宇航科学与技术—航空宇航推进理论与工程]