三回路驾驶仪开环穿越频率约束极点配置设计

针对在三回路驾驶仪设计中,希望对开环穿越频率进行约束,以保证设计完成后的系统在考虑驾驶仪各硬件动态特性后仍能满足稳定性要求.在极点配置的计算方法基础上,构造以系统非主导极点为变量,以开环穿越频率为约束的非线性方程,利用方程求解程序求解相应的非主导极点值,进而完成驾驶仪设计.驾驶仪设计实例验证表明,这一方法便捷可行,非常适用于三回路驾驶仪工程设计.

Pole placement design with open-loop crossover frequency constraint for three-loop autopilot

In three-loop autopilot design,if the dynamics of those hardwares such as actuator,gyro,accelerometer,structural filters and so on is considered,the autopilot open-loop crossover frequency should be constrained in order that the system stability requirement can be satisfied.Based on the pole placement method,a nonlinear equation with open-loop crossover frequency constraint is found.Solving this equation,the non-dominate poles will be obtained.Finally,through an autopilot design example,it is demonstrated that this method is very convinced to be used in the three-loop autopilot engineering design.