Prescribed-time Model-free Adaptive Attitude-tracking Control of Spacecraft System under DoS Attacks

This paper presented a prescribed-time model-free adaptive control (PTMFAC) scheme to achieve attitude-tracking control of a spacecraft system under denial-of-service (DoS) attacks. By using a finite-time performance function (FTPF), an improved dynamic linearization module was presented to attain the prescribed-time convergence of output signal. At the same time, we presented a counter-attack strategy to reduce the effect of attacks. By employing the counter-attack strategy, a PTMFAC control algorithm was proposed to achieve attitude-tracking control within a prescribed time. Finally, the boundness analyses and simulations confirmed the effectiveness of developed control algorithm.