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首页> 外文期刊>Journal of Aerospace Sciences and Technologies >DYNAMICS OF FLIGHT CONTROL SURFACES UNDER VARIABLE SYSTEM PRESSURE AND ACTUATION COMPLIANCES
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DYNAMICS OF FLIGHT CONTROL SURFACES UNDER VARIABLE SYSTEM PRESSURE AND ACTUATION COMPLIANCES

机译：可变系统压力和气动顺应性下飞行控制表面的动力学

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The present study has investigated the problem of actuation rate dynamics in the presence of a command shaper, actuator compliance and a representative control surface. The mathematical models are obtained considering the real system effects such as fluid compressibility, viscous and friction damping and servo valve non-linearities. The sub-system level simulations are carried out which clearly bring out the effect of system pressure on the dynamic performance of the actuation mechanism. These results also bring out the fact that requirement of high performance control system can be met by increasing the system pressure. However, it is also found that pressure related damping reduces as the pressure is increased, resulting in greater chatter in servo system. It is also found that actuation compliance affects only the transient behaviour of the actuation rate, leaving the steady state value unaltered. The complete system simulation clearly brings out the effect of command shaper dynamics on the actuation system response.
机译：本研究已经研究了在存在命令整形器，执行器柔顺性和代表性控制面的情况下驱动率动态的问题。在考虑实际系统影响（例如流体可压缩性，粘性和摩擦阻尼以及伺服阀非线性）的情况下获得数学模型。进行子系统级仿真，可以清楚地显示出系统压力对执行机构动态性能的影响。这些结果还表明，可以通过增加系统压力来满足高性能控制系统的要求。但是，还发现与压力有关的阻尼随着压力的增加而减小，从而导致伺服系统中的振动更大。还发现致动顺应性仅影响致动速率的瞬态行为，而使稳态值保持不变。完整的系统仿真清楚地展示了命令整形器动力学对驱动系统响应的影响。

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