中文摘要：

通过直接参数途径，太空船态度追踪的一个解决方案被介绍。首先，追踪控制模型的太空船态度被秒顺序的错误方程建立非线性的基于四元数的态度系统。基于控制模型，一个合适的控制器被直接参数途径设计。与另外的控制策略相比，直接参数途径能提供自由的所有度让控制器为系统性质满足要求并且把原来的非线性的系统变成靠近环的线性系统。而且，这份报纸根据坚韧性，控制器输出的限制和靠近环的特征值敏感优化控制器。把控制器放进原来的系统，靠近环的系统的州的反应和控制器的产量在 Matlab 被阴谋验证控制器的可获得性和坚韧性。因此，控制太空船能达到与外部骚乱转矩在活动目标上追踪的目标。

英文摘要：

Through the direct parameter approach, a solution for spacecraft attitude tracking is presented. First of all, the spacecraft attitude tracking control model is built up by the error equation of the second-order nonlinear quaternion-based attitude system. Based on the control model, a suitable controller is designed by the direct parameter approach. Compared with other control strategies, the direct parameter approach can offer all degrees of freedom for the controller to satisfy the requirements for system properties and turn the original nonlinear system into closed-loop linear system. Furthermore, this paper optimizes the controller according to the robustness, limitation of controller output and closed-loop eigenvalue sensitivity. Putting the controller into the original system, the state response of the closed-loop system and the output of controller are plotted in Matlab to verify the availability and robustness of the controller. Therefore, the controlled spacecraft can achieve the goal of tracking on the mobile target with the external disturbance torque.