Analysis by Simulation of Different Control Algorithms of A Digital Hydraulic Two-Actuator System
Analysis by Simulation of Different Control Algorithms of A Digital Hydraulic Two-Actuator System
复制标题
数字液压双执行机构不同控制算法的仿真分析
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
M. Linjama
中科院分区：
文献类型：
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作者：
M. Karvonen;Mikko Heikkilä;M. Huova;M. Linjama
许多液压系统都有损失，这可以通过新技术来避免。因为部件效率可以优化到一定的工作点，所以液压机械并不比其他机械差。比系统中每个部件的峰值效率值更重要的是整个输电线路的效率。在所需功率和速度/力比为变量的系统中，部件可能但很少在其最佳设计点运行。移动工作液压的一种典型方法是将负载传感泵用于液压多执行器系统。这种方法是有效的，但如果同时使用多个执行器，这种方法很少。我们最近改进的液压电源系统的原型是数字液压电源管理系统(DHPMS)，它可以在优化的供应压力下为许多执行器提供服务，而且还能够驱动和转换。该功能从整体上减少了系统中的损失。通过使用带有复杂控制算法的分布式阀门系统和DHPMS，可以进一步减少损失。在这项研究中，我们使用了数字液压阀，其效率强烈地依赖于所使用的控制算法。我们在这里研究了具有两个执行器、一个DHPMS和数字阀的系统的不同控制方法。
Many hydraulic systems have losses, which could be avoided with new technology. Because component efficiency can be optimized to a certain operation point, hydraulic machines are no worse than other machines. More important than the peak efficiency values of each individual component in a system is the efficiency of the whole power transfer line. In a system where the amount of required power and the velocity/force ratio are variables, components may but seldom operate at their optimal design points. A typical approach to mobile work hydraulics is to use a load-sensing pump for a hydraulic multi-actuator system. This approach is efficient but seldom, if many actuators are used simultaneously. Our recent prototype of an improved hydraulic power supply system is the Digital Hydraulic Power Management System (DHPMS), which can serve many actuators at optimised supply pressure but is also capable of motoring and transforming. This functionality holistically reduces losses in the system. Losses can be further reduced by using distributed valve systems with sophisticated control algorithms together with the DHPMS. In this study, we used digital hydraulic valves, which efficiency strongly depends on the control algorithms used. We studied here different control methods for a system with two actuators, a DHPMS, and digital valves.