一种无静差倾斜稳定回路及其参数优化设计方法

A Method for Designing a Zero Steady-State Error Tilt Stabilization Loop and Its Parameter Optimization

摘要:

针对常规倾斜角速度比例积分回路不能有效消除战术导弹滚动通道存在复杂扰动的问题，给出一种无静差倾斜稳定回路结构。采用极点配置方法，推导了期望特征多项式系数与无静差倾斜稳定回路控制参数之间的解析关系。通过带有非线性自适应惯性因子的粒子群优化算法，对期望特征多项式系数进行优化设计，优化结果能够同时满足时域和频域指标要求。将设计结果应用于某战术导弹，六自由度数字仿真和飞行试验结果均表明，该回路结构能够快速消除由初始扰动产生的倾斜角误差，克服各项滚动干扰，保证导弹在飞行过程中倾斜角误差始终为零或尽可能小，满足对倾斜角误差的工程应用要求，验证了方法的正确性和有效性。该方法具有一定的工程应用价值。

Abstract:

Aiming at the conventional tilt angular velocity proportional-integration loop, which cannot effectively eliminate the problem of complex disturbance in the rolling channel of tactical missiles, a zero steady-state error tilt stabilization loop structure is proposed. The analytical relationship between the desired characteristic polynomial coefficients and the control parameters of the zero steady-state error tilt stabilization loop is derived by using the pole configuration method. Through particle swarm optimization algorithm with nonlinear adaptive inertia factor, the desired characteristic polynomial coefficients are optimized and designed, and the optimization results simultaneously satisfy both time-domain and frequency-domain indicators. The design results are applied to a tactical missile, and the six-degree-of-freedom digital simulation and flight test results show that the loop structure can quickly eliminate the tilt angle error caused by the initial disturbance, overcome the rolling interference, and ensure that the tilt angle error of the missile is always zero or as small as possible during flight, which meets the engineering application requirements of the tilt angle error, and verifies the correctness and effectiveness of the proposed method. This method has certain engineering application value.