Fast Robust Integrated Guidance and Control Design of Interceptors

Abstract

In this brief, a fast robust integrated guidance and control design approach, considering the 3-D interception of interceptors for hypersonic vehicles, is proposed. The proposed method is designed using the modified fast terminal sliding mode control and dynamic surface control with signal compensation. The fractional integral fast terminal sliding functions are presented independently, and all the sliding phases run parallel to increase the system response speed. Utilizing the dynamic surface control method, the robust compensation signals are constructed to eliminate the influence of uncertainty equivalents thoroughly. Therefore, the proposed approach guarantees the fast convergence of line-of-sight angular rates and the system robustness for uncertainties. The simulation results demonstrate the robustness of the proposed controller, and a variety of comparison studies are also carried out to demonstrate the advantage of the new approach.Index Terms-Dynamic surface control, fast terminal sliding mode (FTSM) control, integrated guidance and control (IGC), interceptor.

Observer-Based Sliding Mode FTC for Multi-Area Interconnected Power Systems against Hybrid Energy Storage Faults

“…dτ is the integration of the q i /p i -fractional power of the tracking error e i with the initial value −e i (0)/α i . Because p i > q i > 0, then e q i /p i i will not be equal to infinity, and the controller is nonsingular [34]. Based on the above analysis, the main result of this paper can be described as the following theorem.…”

New Integrated Guidance and Control of Homing Missiles with an Impact Angle against a Ground Target

“…Meanwhile, it can be also obtained from the disturbance observers (17), (18), (19), (20), (21), (22), (23), and (24) that…”

“…With increasing q 1 , the T 13 increases due to (40), (41), (42), (43), and (44). Only when the estimate accuracy of d j (j = 2, 3) is improved by the nonlinear disturbance observers (17), (18), (19), (20), (21), (22), (23), and (24) can λ j be reduced and the accuracy of the state x 1 be also increased. In fact, the impact of the LOS angle error is satisfied with e q ≤ 2T 13 μ/q 1 due to the definition of the state x 1 ; that is, it is obtained from the relationship between the accuracy of the LOS angle error and the estimate error of nonlinear disturbances.…”

“…The second category method for the IGC system combines the backstepping technique and the other control methods [13][14][15][16][17][18][19], such as the small-gain method [14], input-to-state stability theory [15], and dynamic surface control technique [16][17][18][19]. The model of the IGC system can be written as a strict feedback system under reasonable assumptions, and some virtual control inputs can be obtained by the backstepping technique [19].…”

Adaptive dynamic surface asymptotic tracking for a class of uncertain nonlinear systems

“…[41][42][43][44][45][46][47][48][49][50][51] Meanwhile, DSC methodologies have been successfully applied to many practical systems. [52][53][54][55][56][57][58][59] It is worth mentioning that, as revealed in the work of Pan and Yu, 60 because of the use of linear low-pass filters, boundary layer errors are introduced into DSC systems resulting in large tracking-error bounds and degraded tracking accuracy. More recently, instead of using the linear filters, several DSC methods have been addressed to improve the control performance.…”