机的液压系统

机的液压系统Tag内容描述：<p>1、哈尔滨理工大学学士学位论文学士学位论文3150KN专用液压机的液压系统设计摘要本机器适用于一般金属压制、塑料、粉末冶金压制、可塑型材料的压制工艺。它由主机及控制机构两大部分组成，通过管路及电气装置联系起来构成一整体。主机部分包括机身，主缸，顶出缸及充液装置等组成。控制机构包括动力机构，上下限程装置，管路及电气箱等部分组成。其液压系统由能源转换装置（泵和油缸），能量调节装置（各种阀）以及能量输送装置（油箱，充液油箱，管路）等组成。本机器的工作压力，压制速度，空载快速下行和减速的行程范围均可根据工艺需要进。</p><p>2、Semi-automatic control system for hydraulic shovelAbstractA semi-automatic control system for a hydraulic shovel has been developed. Using this system, unskilled operators can operate a hydraulic shovel easily and accurately. A mathematical control model of a hydraulic shovel with a controller was constructed and a control algorithm was developed by simulation. This algorithm was applied to a hydraulic shovel and its effectiveness was evaluated. High control accuracy and high-stability per。</p>