title: Development of a novel disturbance observer based fractional order PD controller for a gun control system.
abstract: 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.
authors.affiliation: School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210014, China.
authors.forename: Qiang
authors.identifier: 0000-0002-7673-2043
authors.initials: Q
authors.lastname: Gao
authors.affiliation: Military Representative Office of the General Armaments Department in Wuhan Area, Wuhan 430073, China.
authors.forename: Liang
authors.initials: L
authors.lastname: Zheng
authors.affiliation: School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210014, China.
authors.forename: Jilin
authors.initials: J
authors.lastname: Chen
authors.affiliation: School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210014, China.
authors.forename: Li
authors.initials: L
authors.lastname: Wang
authors.affiliation: School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210014, China.
authors.forename: Yuanlong
authors.initials: Y
authors.lastname: Hou
mesh_terms: D004867:Equipment Design; D005389:Firearms; D008962:Models, Theoretical