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针对反装甲车导弹打击目标时落角约束要求,研究了两类典型的具有落角约束的导引律。通过在滑模变结构导引律的基础上引入模糊逻辑控制以减小控制量的抖振和系统能量耗损;在比例导引律的基础上引入时变导航系数与偏置项来满足落角约束。对两种改进制导律的有效性进行了仿真校验。仿真结果表明,与变系数偏置比例导引律相比,模糊变结构控制在干扰影响下仍能保持较高的制导精度。
In order to meet the requirement of anti-armor restraint on anti-armor vehicle missiles, two types of typical guidance law with falling restraint are studied. The fuzzy logic control is introduced to reduce the control chattering and system energy loss by introducing the sliding mode variable structure guidance law. The time-varying navigation coefficient and bias term are introduced to the proportional guidance law to meet the falling angle constraint. The validity of the two improved guidance laws is verified by simulation. The simulation results show that fuzzy variable structure control can still maintain high guidance accuracy under the influence of interference compared with the variable coefficient bias proportional guidance law.