Gao Qiang, Zheng Liang, Chen Jilin, Wang Li, Hou Yuanlong
School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210014, China.
Military Representative Office of the General Armaments Department in Wuhan Area, Wuhan 430073, China.
ScientificWorldJournal. 2014 Jan 28;2014:284636. doi: 10.1155/2014/284636. eCollection 2014.
Motion control of gun barrels is an ongoing topic for the development of gun control equipment (GCE) with excellent performances. In this paper, a novel disturbance observer (DOB) based fractional order PD (FOPD) control strategy is proposed for the GCE. By adopting the DOB, the control system behaves as if it were the nominal closed-loop system in the absence of disturbances and uncertainties. The optimal control parameters of the FOPD are determined from the loop-shaping perspective, and the Q-filter of the DOB is deliberately designed with consideration of system robustness. The linear frame of the proposed control system will enable the analysis process more convenient. The disturbance rejection properties and the tracking performances of the control system are investigated by both numerical and experimental tests, the results demonstrate that the proposed DOB based FOPD control system is of more robustness, and it is much more suitable for the gun control system with strong nonlinearity and disturbance.
炮管的运动控制是高性能火炮控制设备(GCE)发展中一个持续研究的课题。本文针对GCE提出了一种基于新型干扰观测器(DOB)的分数阶PD(FOPD)控制策略。通过采用DOB,控制系统在没有干扰和不确定性的情况下,表现得如同标称闭环系统。从回路成形的角度确定FOPD的最优控制参数,并在设计DOB的Q滤波器时考虑了系统的鲁棒性。所提出控制系统的线性框架将使分析过程更加便捷。通过数值和实验测试研究了控制系统的干扰抑制特性和跟踪性能,结果表明所提出的基于DOB的FOPD控制系统具有更强的鲁棒性,更适合具有强非线性和干扰的火炮控制系统。