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为了提高BTT导弹自动驾驶仪在非匹配干扰影响下的系统性能,本文提出一种新型基于干扰补偿的抗尖峰滑模控制器(peaking-free disturbance observer-based sliding mode controller,PDOSMC).所提出的PDOSMC不仅不需要非匹配干扰满足H2假设,还有效解决了高观测增益下估计尖峰引起现有干扰补偿滑模控制器(disturbance observer-based sliding mode controller,DOSMC)控制性能下降的问题.仿真结果表明,在都选取高观测增益的情况下,PDOSMC算法不仅取得了与现有DOSMC算法相同的高控制精度,还避免了DOSMC算法中由估计尖峰所带来的控制饱和以及跟踪误差振荡.
In order to improve the system performance of BTT missile autopilot under the influence of unmatched interference, a new peaking-free disturbance observer-based sliding mode controller (PDOSMC) is proposed in this paper. PDOSMC not only does not need non-matching interference to satisfy H2 hypothesis, but also effectively solves the problem that the estimated spikes under high observation gain cause the drop of control performance of the existing disturbance observer-based sliding mode controller (DOSMC). The simulation results show that In both cases, the PDOSMC algorithm not only achieves the same high control precision as the existing DOSMC algorithm, but also avoids the control saturation caused by the estimated spikes and the tracking error oscillation in the DOSMC algorithm.