| 1. | A new type of synchronous hydraulic circuit of cutting machines
剪板机的新型液压同步回路 |
| 2. | Improvement of overload protection hydraulic circuit of robot model jss
35型机器人过载保护油路的改进 |
| 3. | Make scientific researches on the hydraulic circuit of robot model jss
35型机器人液压回路的研究与改进 |
| 4. | Microcomputer control system of closed type hydraulic circuit for concrete pump
混凝土泵闭式液压回路微机控制系统 |
| 5. | The linking - passage - way hydraulic circuit of the pumping hydraulic system of the concrete pump
混凝土泵泵送液压系统的连通回路 |
| 6. | In chapter 4 , by the tool of matlab / simulink , static and dynamic simulation researches for up and down hydraulic circuit of the integrated valve are given
第四章通过作者在第二章建立的数学模型，在matlab / simulink环境下对集成控制阀上行和下行工况分别进行了稳态、动态仿真研究。 |
| 7. | Concrete structures of threaded cartridge valves are described in the article . features and precautions when applied to various typical hydraulic circuits of construction machinery are expatiated
摘要介绍了螺纹插装阀的具体结构，描述了其在各种典型工程机械液压回路中的应用特点及其注意事项。 |
| 8. | The respect drive system design : the servo valve commonly used in the closed - loop control system is replaced with the proportion direction valve , and controlled it with the methods of electrohydraulic proportional control . the system adopts the hydraulic circuits that prevent the simulating table letting down because it own weight take place
驱动系统设计方面：用比例方向阀取代了液压闭环控制系统中常用的伺服阀，采用电液比例技术对其进行控制，并在液压油路中采用了防止因仿真转台自重而产生缓慢下滑的液压回路。 |
| 9. | Electro - hydraulic control principle applied in construction machinery is analyzed in this paper ; working principle and application characteristic of electro - hydraulic proportional is lucubrated ; technique and static characteristic of electro - hydraulic proportional decompression value and electro - hydraulic proportional direction value is emphatically analyzed and studied ; electro - hydraulic proportional control mode is setup . the hydraulic circuit which can be not only suit for handle operation but also for remote operation in the same construction machinery , and the hydraulic system design methods is also introduced that the proportion control use d for the steering devices and the working devices of the machine
本文对工程机械上应用的电液控制原理进行了分析；对电液比例阀的工作原理和应用特点进行了深入研究；重点对电液比例减压阀和电液比例方向阀技术特征和静态特性进行分析研究；建立电液比例控制模型；提出了在同一台工程机械上，既能满足遥控又能满足手控的液压回路，以及采用比例量控制行驶和工作装置的液压系统设计方法。 |
| 10. | In the third chapter , the mathematical models of project system have been established , and simulation has been done on the simulink enviroment of matlab software kits . the simulation focus on the effects of main parameters on the dynamic characteristics of speed control system , and the main parameters include viscosity damp coefficient and friction torque of electrical motor shaft , internal leakage coefficient of pump / motor of hydraulic circuits , gas volume of pressure accumulator , viscosity damp coefficient of cylinder piston and different running building floors , etc . at last , theoretical research effects of the flow and pressure pulsation of pump / motor on car speed and oil volume leakage theory are discussed . the fourth chapter of this thesis concerns the research on the key items about hydraulic power control system according to the ens 1 - 2 and other hydraulic elevator standards
论文第三章针对组成系统的各个模块进行了机理建模，并且通过matlab软件中的simulink图形化仿真环境进行了本课题系统的仿真研究，主要针对影响系统特性的主要参数变化，动态分析系统的输出特性，在上下行工况中，分析了电机轴系粘性阻尼系数、轴系摩擦力矩、主回路蓄能器回路液压泵马达内泄漏系数、蓄能器气体容积、液压缸柱塞粘性阻尼摩擦系数以及不同运行楼层工况等参数对系统特性的影响；最后对轴向柱塞泵马达的流量压力脉动对电梯轿厢速度的影响和蓄能器内油液体积损失机理进行了理论研究。 |
