基于预测校正的三回路驾驶仪极点配置设计

Pole assignment design with prediction-correction technology for three-loop autopilots

针对三回路自动驾驶仪设计中,以开环穿越频率为性能指标的极点配置算法存在的缺陷,提出了预测校正开环穿越频率极点配置设计方法。采用该方法完成了某战术导弹三回路自动驾驶仪设计;验证了该方法设计的控制系统比传统方法性能优异,满足期望开环穿越频率性能指标;分析了三回路自动驾驶仪各回路对导弹控制系统发挥的作用。通过实例分析,表明该方法克服了以往极点配置设计方法的缺点,便捷有效,收敛速度快,计算量小,非常适用于三回路自动驾驶仪的设计。

A new approach of pole assignment design in conjunction with prediction-correction technique is proposed to solve the deficiencies of traditional pole assignment design in which open-loop crossover frequency is considered to he one performance index in the threeqoop autopilot design. The three-loop autopilot is designed for a certain tactical missile by the proposed methodology, and the flight-control system satisfies designer cho- sen open-loop crossover frequency criteria, meanwhile having a more advanced performance than one by tradi- tional methods. The role of every loop of the autopilot in the tactical missile control system is analyzed. Some design examples are presented, the experimental results show that this method overcomes the defects of previ ous methods. It is convenient and effective, has a fast convergence rate and a small amount of calculation. This algorithm is very useful to threeqoop autopilot engineering design.