Quantum mechanics

Algorithm

Control (management)

Fixed point

Engineering

Aerospace engineering

Quantization (signal processing)

Bandwidth (computing)

Control engineering

Tracking (education)

Pedagogy

Radar tracker

Computer science

Computer network

Physics

Attitude control

Psychology

Mathematics

Double integrator

Mathematical analysis

Artificial intelligence

Observer (physics)

Spacecraft

Control theory (sociology)

Radar

Integrator

Computer vision

IEEE Transactions on Aerospace and Electronic Systems

This paper investigates the fixed-time attitude tracking control problem for rigid spacecraft with input quantization and external disturbances. A novel fixed-time disturbance observer is designed to estimate unknown disturbances. By using adding a power integrator technique, a fixed-time controller is constructed, which can guarantee system states converge to a neighborhood of origin in fixed time. The parameter of quantizer can be coarsely chosen. Finally, simulation results are employed to demonstrate the effectiveness of the developed control scheme.

Fixed-Time Attitude Tracking Control for Spacecraft With Input Quantization