Optimal Guaranteed Cost Control Algorithm for Automatic Chain Shell Magazine

The automatic chain shell magazine is the primary subassembly of the automatic ammunition loading system of a big-caliber howitzer. Due to the change of the shell amount in the magazine during firing, its positioning control is a kind of control problem of systems with uncertain parameters. In order to realize accurate control of shell position, an optimal guaranteed cost control algorithm based on linear matrix inequality (LMI) theory was put forward. The motion equations of the magazine were built, and the motion equations for four special load situations were linearized; according to the basic theory of the guaranteed cost control, the motion equations were written as the standard forms for linear uncertain systems; the optimal guaranteed cost control law for the position control of the magazine was obtained by use of LMI toolbox in MATLAB package. Using this control law, the controlled dynamic simulation of the shell magazine was carried out. The simulation results indicate that the control algorithm has high control precision.     

基础振动下单自由度机械臂的动力学控制

提出基础振动下单自由度机械臂的基于混合灵敏度函数的H∞控制算法.首先运用拉格朗日法建立机械臂的动力学方程;其次将参数不确定系统的控制问题转化为机械臂的频域控制问题以及混合灵敏度函数整形问题,并运用MATLABμ -综合工具箱中的D-K迭代算法设计控制器.分析结果表明,所设计的控制器能够使系统具有良好的鲁棒性和鲁棒稳定性.