一种攻击大机动目标的PID型比例导引律 |
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引用本文: | 雷虎民 楼顺天. 一种攻击大机动目标的PID型比例导引律[J]. 西北工业大学学报, 1999, 17(1): 98-102 |
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作者姓名: | 雷虎民 楼顺天 |
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作者单位: | [1]西北工业大学 [2]西安电子科技大学 |
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摘 要: | 传统的比例导引(PN)具有两个缺点,一是攻击大机动目标的控制精度差,二是指令加速度过载大。为此,本文提出了一种攻击大机动目标的扩展PID比例导引(PID-PN)制导规律。
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关 键 词: | 空空导弹 制导规律 机动目标 PID型 比例导引律 |
A New PIDPN Guidance Law for Intercepting Highly Maneuverable Targets |
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Abstract: | If we employ PN(proportional navigation) guidance law, we are unable to intercept highly maneuverable targets because: (1) control precision is not good enough, (2) overload demand of acceleration command is not low enough. Therefore we present a PIDPN(proportionalintegraldifferential proportional navigation) law, which is n c=kV c{ (1/2)k 1[t go (q-q 0)/t f]}. n c=kV c is PN law. (1/2)kk 1V ct go is the differential term of PIDPN law, which makes it possible to improve the high maneuverability of missile. (1/2) kk 1V c(q-q 0)/t f is the integral term of PIDPN law. This integral term means physically a pursuit signal, which makes it possible to correct initial deviation of line of sight in realtime. In a simulation example, a specific type of AAM (airtoair missile) is used for intercepting highly maneuverable targets. Simulation results in Figs.2 and 3 indicate that, for homing against highly maneuverable targets, PIDPN law is better than PN law in three respects: (1) control precision is higher, (2) overload demand of acceleration command is lower, (3) interception time is shorter. |
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Keywords: | AAM(airtoair missile) guidance law maneuverable target |
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