The performance of electrohydraulic servomechanism has been analyzed . the clutch operation mechanism driven by dc servomotor was put forward 分析高速开关阀控制液压缸系统的性能缺点，提出采用直流伺服电机作为离合器执行机构。
The developments of piezoelctronic high speed on / off valve and its application to other hydraulics systerm can be based on this little thesis 本文的工作为压电式高速开关阀的研究与应用打下了一定的基础，为压电式高速开关阀应用到其它液压系统做了前期准备。
Carlos eduardo jeronymo , hironao yamada , takayoshi muto . adaptive predictive controller for hydraulic system driven by fast - switching on / off solenoid valves [ j ] . jsme international journal , series c , 1996 , 39 ( 3 ) 刘忠,杨襄璧,赵宏强.基于高速开关阀的液压控制系统及其控制方式的应用研究[ j ] .凿岩机械气动工具, 1998 ( 4 )
C ) to create the pwm signal that drives the new high speed on / off valve , the currency pwm - confection of intel 80c 196mc is used , and the voltage , power magnify electrocircuit that used for the actuater ' s dynamic application is chosed and designed 应用intel80c196mc中的通用pwm调制输出，产生驱动高速开关阀的pwm信号，选择和设计了适合驱动器动态应用的电压、功率放大电路。
B ) the design of the new valve : for the displacement of the actuator , hydraulic magnify is used , and the stracture that has comparatively motion beteen harness and body and comparatively stillness between harness and body is adopted . the static characteristic of the new valve and also its dynamic characteristic , the factors that affect the valve ' s characteristic are analyzed 设计新型高速开关阀：对驱动器位移采用了液压式放大，并采用阀套与阀体之间有相对运动，阀芯相对阀体不动的结构。分析了新型高速开关阀静动态特性以及影响其性能的主要因素。
In this paper , the on - off procedure and drive mode of high - speed on - off valves are introduced , the principle of pwm most in use recently is introduced . based on the forming method of pwm signal with software , the conclusion is drawn that the occupancy of pwm signal is only in relation to the control value calculated and the mean flowrate is linear to the control value when the carrier wave ( cycle and amplitude ) is chosen 论文介绍了高速开关阀的开关过程和阀的驱动方式。介绍了目前最常用的流体脉冲控制方法?脉宽调制的机理。介绍了pwm信号的软件生成方法,并由此证明,高速开关阀可以实现流量与控制量成正比的模拟控制所能实现的伺服控制功能。
Therefore , it is proved that the control with high - speed on - off valves can realize the servo control function that be carried out with analog control whose control flowrate is proportional to is value . secondly , the paper builds up the mathematics model of the normal pneumatic servo system based on the symmetry structure , and the main characteristic parameters are analyzed and then introduce the theories to increase 论文基于易于进行分析的对称结构的高速开关阀阀控气缸,建立了气压伺服系统动力机构的数学模型,分析了其主要性能参数,提出了提高纯气动伺服系统阻尼比的方法,并从理论上分析了其实现的可能性。
Firstly , the research and development situation of pneumatic servo system in recent years is summed up . meanwhile , the development history and present situation of interrelated control theory is reviewed . considering the cost and the capability of control of phcc servo system , high - speed on - off valves are used as control valves and controlled with pulse width modulation ( pwm ) in this system 论文首先综述了近年来气压伺服系统的研究和发展状况,考虑到气液联控伺服系统的成本和控制的可能性,确定采用气液高速开关阀作为系统的控制阀,应用脉宽调制( pwm , pulsewidthmodulation )方法进行控制。
Furthermore combine the three digital module of the bus system based on the can2 . 0a communication protocol . then using the pc as the host control node , we complete the universal data electric which is designed by ourselves , the system can achieve the expected results on dynamic and static state . through modifying the management procedure , control program and the outside driving electric circuit , the system can be adaptive to the electric - hydraulic control groupware of any new construction machine 在此基础上设计出了通信适配卡、数据采集模块、数字控制模块和由高速开关阀实现控制的液压试验平台，并采用双绞线把基于can2 . 0a通信协议的三个数字模块组成总线系统，再由pc作为主控节点，实现了基于can - bus的通用数字电液控制系统，用软件实现了pwm信号输出并很好地实现了高速开关阀的控制。
Yet , most existing high speed on / off valves use electromagnet as their electicity - mechanism conversion element , and good performant electromagnets have to be imported from other countries , in such situation , it is difficity to make excelent high speed electromagnet valve made in our country , even if we can make good performant high speed electromagnet valve in our country , it still has the shortcoming of not high enough respond speed , too small placket and big volumeo in this thesis , a new high speed on / off valve is developed based on two types of existing valves , this new valve has higher respond speed , a little big placket and little volume o for the new valve , several main task was made out as below : a ) several types of high speed on / off were first analyzed , then the basic performance of the actuator of the new valve was analyzed 高速开关阀是20世纪80年代发展起来的一种具有响应速度快、抗污染能力强、与电子电路配合好等特点的一个良好的动力放大元件。但是现有的高速开关阀基本上采用电磁铁为电?机转换元件，高性能的电磁铁又基本为进口，难以满足高性能高速开关阀国产化的要求，即使是高性能的电磁铁式高速开关阀，仍存在着响应速度不够大、开口过小、体积较大的缺点。本文在现有两种高速开关阀的基础上，设计了一种新颖的高速开关阀，在提高其动态性能的同时，增大了阀的开口，减小了阀的体积。
