基于ALPSO算法的过驱动最小推力控制方法

Overdrive minimum thrust control method based on ALPSO algorithm

为保证推力器的控制效果,完成冗余指令的分配控制,提出基于ALPSO算法的过驱动最小推力控制方法。该方法依据构建推力器的动态分配数学模型,以推力器的动力学和运动学状态为基础,获取推力器期望的控制结果。在此基础上确定过驱动系统的推力器推力期望力矩误差函数最小,为实现过驱动最小推力控制分配的目标,采用ALPSO算法对其进行求解,获取控制结果。测试结果显示:应用该方法后,敏感度、负载裕度均在0.022以下,平衡度测试结果均在0.944以上,控制性能较好;能够快速完成力矩结果的控制,保证推力器按照设定的理想轨道运行;x,y,z轴上的分配控制力矩偏差均低于0.0200。

In order to ensure the control effect of Thruster and reliably complete the distribution control of redundant commands,an over actuated minimum thrust control method based on ALPSO algorithm is proposed.This method is based on the construction of the dynamic classification mathematical model of Thruster,analyzes the dynamic characteristics and motion characteristics of Thruster,and obtains the desired control result of Thruster according to the analysis results.On this basis,it determines that the error function of the desired thrust torque of the Thruster of the overdrive system is the smallest,which is the objective function of the distribution of the overdrive minimum thrust control.The ALPSO algorithm is used to solve the objective function and obtain the control result.The test results show that after the application of this method,the sensitivity and load margin are both below 0.022,and the balance test results are all above 0.944,indicating good control performance.Quickly complete the control of torque results to ensure that the Thruster can run according to the set ideal track.The deviation of the distributed control torque on the x,y and z axes is less than 0.0200.