基于滑模方法的原子重力仪主动隔振系统仿真

该文主要研究基于滑模方法的原子重力仪主动隔振系统并且仿真。步骤如下,建立冷原子重力仪主动隔振模型;设置冷原子重力仪主动隔振系统的滑模控制器,对主动隔振系统内部参数变化的不确定性和外部地面振动不确定干扰进行观测;设计高增益滑模的控制规律,解决目前控制方法没有考虑地面振动等外界扰动随机性和模型不确定性的问题;通过建立滑模控制方法,将作用于系统的所有不确定因素都归结为系统的未知扰动,通过系统的输入输出信号进行实时估计并加以补偿,从而将原子重力仪主动隔振系统的精度提升到新的高度。

This paper mainly studies and simulates the active vibration isolation system of atomic gravimeter based on sliding mode method.The steps are as follows,establishing the active vibration isolation model of the cold atomic gravimeter;setting up the sliding mode controller of the active vibration isolation system of the cold atomic gravimeter to observe the uncertainty of the internal parameters of the active vibration isolation system and the uncertain disturbance of external ground vibration;designing the control law of high gain sliding mode to solve the problem that the current control methods do not take into account the randomness of external disturbances such as ground vibration and model uncertainty;establishing the sliding mode control method to ensure that all the uncertain factors acting on the system are reduced to unknown disturbances of the system,which are estimated and compensated in real time by the input and output signals of the system.As a result,the accuracy of the atomic gravimeter active vibration isolation system is raised to a new height.