Dealing with input delay and switching in electrohydraulic servomechanism mathematical model
Dealing with input delay and switching in electrohydraulic servomechanism mathematical model
复制标题
电液伺服机构数学模型中输入延迟和切换的处理
DOI：
10.1109/codit.2018.8394891
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
G. Tecuceanu
中科院分区：
文献类型：
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作者：
D. Enciu;I. Ursu;G. Tecuceanu
大约 70 年来，电液伺服机构在许多工业领域中一直是最具吸引力的领域，但人们特别关注这些自动系统在飞机飞行控制中的性能和质量。本文考虑的电液伺服机构通过微分方程的五维切换非线性系统进行建模。从本质上讲，电液伺服机构的数学模型存在几个缺点：稳定性临界情况和切换型非线性。本文通过在数学模型中自然地引入液压缸两腔之间的内泄漏，消除了稳定性临界情况的缺点。相反，也很自然地引入了控制延迟。值得一提的是，电液伺服机构切换型延迟数学模型的混合问题本身就相当困难，据我们所知尚未被考虑。
Electrohydraulic servomechanisms represent a field of maximum attractiveness in many industrial fields for about 70 years, but special attention is paid in particular to the performance and quality of these automatic systems in flight controls of aircraft. Electrohydraulic servomechanism considered in this paper is modeled by five dimensional switched nonlinear systems of differential equations. Intrinsically, the mathematical model of the electrohydraulic servomechanism has several shortcomings: critical case for stability and switching type nonlinearity. The shortcoming of the critical case of stability was eliminated in this paper by naturally introducing the internal leakage between the two chambers of the hydraulic cylinder in the mathematical model. Instead, the control delay was introduced, also naturally. It is worth mentioning that this mixed problem, of the electrohydraulic servomechanism switching type delayed mathematical model, is quite difficult in itself and has not been considered, as far as we know.