Spacecraft Attitude Control with Input Quantization

A feedback control scheme is proposed for a spacecraft attitude stabilization system with quantized control torque. A logarithmic type quantizer is studied, which has sufficient precision and requires a low communication rate. The quantization parameter is chosen based on the given controller design parameters and inertial matrix of spacecraft, which ensure the system stability and stabilization error within an adjustable bound. Simulation results demonstrate the effectiveness of the proposed control scheme.