针对飞行仿真转台容易受到外界干扰和参数变化影响的特点,提出了一种基于干扰观测器(DOB)的全局滑模控制(GSMC)方法.采用一个积分切换函数使系统的初始状态即位于滑模面上,解决了到达阶段的问题,并且设计的控制器保证了系统的整个响应过程具有全局滑模特性.为减小控制量中抖振的影响,引入了干扰观测器作为干扰补偿环节.加入干扰观测器后切换增益只需要大于干扰估计误差的上界.实验表明,本文提出的控制方法针对飞行仿真转台系统的不确定性具有很强的鲁棒性,能有效地抑制控制量中的抖振,并具有良好的跟踪性能. Aiming at the characteristics that the flight simulation turntable is easily influenced by external disturbances and parameters variation, a global sliding mode control (GSMC) method based on disturbance observer (DOB) is proposed. An integral switching function is used to make the initial state of the system located in the sliding mode The controller solves the global sliding mode of the whole response process of the system.In order to reduce the influence of the chattering in the control volume, a disturbance observer is introduced as the interference compensation. The switching gain after disturbing the observer only needs to be larger than the upper bound of the disturbance estimation error.Experiments show that the control method proposed in this paper is robust against the uncertainty of the flight simulation turntable system and can effectively suppress the jitter Vibration, and has good tracking performance.