A novel non-contact spacecraft architecture with the extended stochastic state observer for disturbance rejection control of the gravity satellite is proposed. First, the precise linear driving non-contact voice-coil actuators are used to separate the whole spacecraft into the non-contact payload module and the service module, and to build an ideal loop with precise dynamics for disturbance rejection control of the payload module. Second, an extended stochastic state observer is enveloped to construct the overall nonlinear external terms and the internal coupled terms of the payload module, enabling the controller design of the payload module turned into the linear form with simple bandwidth-parameterization tuning in the frequency domain. As a result, the disturbance rejection control of the payload module can be explicitly achieved in a timely manner with out complicated tuning in actual implementation. Finally, an extensive numerical simulation is conducted to validate the feasibility and effectiveness of the proposed approach.

中文翻译：

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具有扩展的基于随机状态观测器的重力飞行控制的非接触式航天器架构

提出了一种新型的具有扩展的随机状态观测器的非接触式航天器结构，用于重力卫星的干扰抑制控制。首先，精确的线性驱动非接触式音圈致动器用于将整个航天器分成非接触式有效载荷模块和服务模块，并建立具有精确动力学的理想回路，以对有效载荷模块进行干扰抑制控制。其次，使用扩展的随机状态观测器进行封装​​，以构造负载模块的整体非线性外部项和内部耦合项，从而使负载模块的控制器设计能够通过在频域中进行简单的带宽参数化调整而变为线性形式。因此，负载模块的干扰抑制控制可以及时明确地实现，而在实际实现中无需进行复杂的调整。最后，进行了广泛的数值模拟，以验证所提出方法的可行性和有效性。