Mars atmospheric entry guidance for reference trajectory tracking based on robust nonlinear compound controller

Indirect neural-based finite-time integral sliding mode control for trajectory tracking guidance of Mars entry vehicle

“…Remark 1. Different from the terminal sliding mode surface in Dai and Xia (2015), Zhao et al (2015), Dai et al (2017), Shen et al (2018aShen et al ( , 2018bShen et al ( , 2019, Gong et al (2020), andLong et al (2020) and the integral sliding mode surface based on the homogeneous method in Zhao et al (2016), the proposed finite-time integral sliding mode surface ( 20) is constructed based on the adding a power integrator technique. Benefiting from the new type of finitetime integral sliding mode surface, the finite-time integral sliding mode controller has no singularity problem, which overcomes a major drawback of the conventional terminal sliding mode control.…”

“…In Zhao et al (2015), a nonsingular terminal sliding mode controller was presented for the Mars entry trajectory tracking under parameter perturbations and external disturbances. Dai et al (2017) designed a robust nonlinear compound controller for the Mars atmospheric entry guidance by integrating the terminal sliding mode control with a second-order differentiator. Subsequently, Shen et al (2018b) proposed a new compound control method consisting of an adaptive nonsingular terminal sliding mode controller and an extended state observer.…”

Review of advanced guidance and control algorithms for space/aerospace vehicles

“…That is, the system errors might not converge to an equilibrium point in finite-time. Hence, to deal with this issue, the development of guidance and control methods based on finite-time SMC theory has been stimulated [40][41][42].…”

“…It is worth noting that in recent years TSMC-based algorithms have been extensively researched, especially in the field of space/aerospace vehicle guidance and control systems. For example, the authors of [40] established a TSMC algorithm to generate the guidance commands for the Mars atmospheric entry problem. In their work, TSMC was combined with a second-order differentiator responsible for estimating the total external disturbance, thus creating a hybrid structure.…”