The electrostatic suspension control system (ESCS) is the core component of the inertial sensor in space gravitational wave detection. To adapt to the changes in orbit environment and satellite platform vibration, the test mass stable is kept in the center of the electrode cage, the ESCS requires high-precision parameters calibration and high-stability verification of the control system. This paper studied the ESCS method, an adaptive controller with variable preload was proposed, and the stability conditions of the control system are given to provide a theoretical basis for the design of the controller. The structure and working principle of the system were also introduced. The electrostatic control system model was derived, and the performance of adaptive preload controller was analyzed. Finally, a simulation was conducted under different disturbance conditions. The results show that the control method proposed in this paper can achieve stable control in difference disturbance, and the preload voltage will change with the conditions. Compared with the traditional fixed preload method, we can see that our method has significantly improved the stability margin and the control quality during the process of dynamic response. This paper provides a solid foundation for the future exploration of space gravitational waves in China and clears the optimization direction for the next step.

中文翻译：

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静电悬挂系统自适应预载控制器设计与分析

静电悬浮控制系统（ESCS）是空间引力波探测中惯性传感器的核心部件。为了适应轨道环境和卫星平台振动的变化，测试质量稳定保持在电极笼的中心，ESCS需要高精度的参数校准和控制系统的高稳定性验证。本文研究了ESCS方法，提出了一种变预载的自适应控制器，并给出了控制系统的稳定条件，为控制器的设计提供了理论依据。还介绍了系统的结构和工作原理。推导了静电控制系统模型，分析了自适应预载控制器的性能。最后，在不同的扰动条件下进行了模拟。结果表明，本文提出的控制方法可以在差分扰动下实现稳定控制，且预载电压会随工况变化。与传统的固定预紧方法相比，我们可以看到我们的方法在动态响应过程中显着提高了稳定性裕度和控制质量。该论文为我国未来空间引力波的探索提供了坚实的基础，为下一步的优化方向指明了方向。可以看出，我们的方法在动态响应过程中显着提高了稳定性裕度和控制质量。该论文为我国未来空间引力波的探索提供了坚实的基础，为下一步的优化方向指明了方向。可以看出，我们的方法在动态响应过程中显着提高了稳定性裕度和控制质量。该论文为我国未来空间引力波的探索提供了坚实的基础，为下一步的优化方向指明了方向。