Adaptive Integral-Type Terminal Sliding Mode Fault Tolerant Control for Spacecraft Attitude Tracking

Abstract

In this paper, the attitude tracking control for a spacecraft system based on a novel adaptive integral-type terminal sliding mode fault-tolerant control strategy is investigated. First, a basic fault-tolerant control scheme is designed to ensure the spacecraft attitude tracking performance in the presence of the actuator fault, external disturbance, and actuator saturation when the rotational inertia of a spacecraft system is known. Second, combined with adaptive laws, a modified fault-tolerant control scheme is proposed to compensate the actuator fault and system uncertainty which contains external disturbance and the inertia uncertainty, separately. The actuator fault is compensated more directly and accurately. The benefits of this approach are that the proposed control scheme can enable the merits of the integral-type terminal sliding mode control, such as nonsingularity, fast convergence speed, and small steady-state errors. Finally, the simulation results are given to demonstrate the effectiveness of the proposed fault-tolerant control schemes. INDEX TERMSActuator fault, adaptive integral-type terminal sliding mode control, attitude tracking control, fault tolerant control.

Design of Sliding Mode Control for Complex Nonlinear Models: A Numerical Approach

“…Hence it is required to convert (40) into a similar linearized form, so that an equivalent of equations (28), (29) and (38) can be derived for output level as well. For that, we first examine (25) and write it in a general form:…”

“…The terminal SMCs have a shortcoming that the control law may face the problem of singularity, which causes unbound growth of control inputs. This singularity issue has been dealt with different approaches [23]- [25]. However, all nonlinear manifold SMCs and especially terminal SMCs have the same problem, i.e., they use complex formulations of manifolds, which does not solve the problem of the design process for complex nonlinear models.…”

Optimal Second Order Integral Sliding Mode Based Composite Nonlinear Feedback Approach for an Electrostatic Micromirror

“…However, the system disturbances are inevitable which intensively interfere with the system stability and transient performance. Among the exiting control techniques, sliding mode control (SMC) is an efficient robust control approach [14] which is widely used in many field such as spacecraft [15], linear motor [16] and MEMS gyroscope [17].…”

Adaptive Fault-Tolerant Attitude-Tracking Control of Spacecraft With Quantized Control Torque

“…Theoretical analysis and simulation results showed that the designed controller can make the system converge to a small domain near the origin in finite time. In [26], the attitude-tracking problem of rigid spacecraft was addressed. With the control allocation technique and SMC technique, an adaptive sliding mode fault-tolerant controller was developed, which can eliminate the effects of actuator faults, mass and inertia uncertainties, and unknown external disturbances.…”