Mixed time–frequency domain simulation of a hydraulic inductance pipe with a check valve
Mixed time–frequency domain simulation of a hydraulic inductance pipe with a check valve
复制标题
带止回阀的液压感应管的混合时频域仿真
DOI：
10.1177/0954406211412459
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
H. Kogler
中科院分区：
文献类型：
--
作者：
R. Scheidl;B. Manhartsgruber;H. Kogler
本文采用时频混合方法对带止回阀的液压开关系统进行了有效的计算，对管道中的波传播进行了频域建模，对开关阀和止回阀进行了时域建模。单向阀的对偶性质使得完全问题具有变分不等式性质。提出了一种求解方法，将止回阀的压力和流量作为一个新变量的函数。所得到的非线性代数方程组的系统使用牛顿-拉夫逊方法结合止回阀的非平滑特性的平滑来求解。该方法被应用到一个液压降压转换器的参数研究。
This paper deals with the efficient computation of hydraulic switching systems with a check valve by a mixed time–frequency domain method; frequency-domain modelling is performed on the wave propagation in a pipe and time-domain modelling is applied to the switching valve and the check valve. The dual property of the check valve makes the complete problem have variational inequality properties. A solution method is presented which replaces the pressure and the flowrate of the check valve as a function of one new variable. The resulting system of non-linear algebraic equations is solved using a Newton–Raphson method in combination with a smoothing of the non-smooth properties of the check valve. The method is applied to a parameter study of a hydraulic buck converter.