Energy equality based detumbling control for Pico-satellites

Pico-satellite, which quality is under 10Kg, is a popular research direction in space field. In this paper, because of the characteristics of the Pico-satellite's attitude determination and attitude control systems, which has no momentum wheel, long share time, constant magnetic moment, we put forward a new Pico-satellite attitude control algorithm named Energy equivalent damping control algorithm. This algorithm use the principle of Magnetic torque work equivalent with the B-dot algorithm, then the kinetic energy of the Pico-satellite decreases gradually and makes the system stable in the desired angular velocity. The algorithm has good engineering application background, and it can meet the requirement of Pico-satellite's low power consumption, low cost, light weight etc. A large number of simulation results show that this algorithm has good control precision and control convergence.