一种BP网络自整定PID控制算法及其在NF-6风洞控制中的应用

NF-6风洞是一座增压、连续、高速回流式风洞,对各子系统的控制性能都有较高的要求。针对NF-6风洞对模型姿态系统控制性能提出的高要求,提出了一种BP网络自整定PID控制策略,并结合现有的改进型PID控制思想对其进行了进一步的分析与改进。仿真结果及初步应用表明:该算法在算法收敛性、实时性及控制精度上较传统PID算法及BP网络算法都有较大程度的提高。

A type of self-adjusted PID control method based on BP NN and its application in NF-6 wind tunnel control

NF-6 wind tunnel is a pressurizing, continuous, high-speed and return-flow wind tunnel, with the high requisition for the subsystems control performance. Aiming at the high control performance of the model attitude system in NF-6 wind tunnel, a type of self-adjusted PID control strategy based on BP NN is put forward, and there is farther analysis and improvement combining with improved PID algorithm. The simulating result and the primary application show that this algorithm greatly improves the convergence, realtime property and control precision comparing to traditional PID and BP NN algorithm.