Abstract: This paper establishes the model of vernier thrusters for spacecrafts using thrust vector control. The thrust vector control allocation algorithm is proposed based on the analysis of the constraints of vernier thrusters. The sequential quadratic programming based thrust vector control allocation algorithm can minimize the torque errors and thrust errors. Numerical simulation shows that this method can be used to obtain preferable allocation results and the control allocation method is feasible and effective.

Key words: thrust vector control, control allocation, vernier thruster, sequential quadratic programming