on-off valve造句

• Electronically - controlled hydraulic throttle actuator with high speed on - off valve
  高速开关阀控制的电液式节气门执行器
• Standard method for the evaluation of external leakage of manual and automated on - off valves
  手动和自动关闭阀门外泄露评估的标准方法
• High - speed on - off valves are used and controlled with pulse width modulation ( pwm ) in this system
  系统应用高速开关阀，用脉宽调制( pwm )的方法进行控制。
• Study on a electro - hydraulic servo control system with the on - off valves of the drill boom positioning mechanism of drilling robot
  凿岩钻车脉冲数控式电液伺服系统的研究
• From the research of the experiment and the simulation , conclusions and suggestions are gotten : ( 1 ) the fast hydraulic system which uses fast on - off valve as the pilot valves to control the logic valve is an available system
  从仿真和实验研究可得出如下结论和建议： ( 1 )本课题所研究的采用快速开关阀作先导阀控制逻辑阀的快速液压系统，是比较可行的方案。
• Then a vsc controller using on - off valve and two potentiometers are designed for cushioning control system . it can realize the balanced , no shock , no reversing cushioning . experiments under different air pressure , load mass are carried out , and the results prove that the vsc controller can be used in pneumatic cushioning
  第五章首先介绍了变结构控制的原理和应用发展情况，然后针对本实验系统设计了一个使用开关阀和端位位移传感器的变结构控制方案，实现缓冲过程的平稳无冲击和无回弹要求，并在不同气源压力、不同负载质量下分析了控制性能的变化，实验结果证明缓冲控制采用变结构控制是可行的，并具有很强的鲁棒性。
• 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。
• In order to overcome the disadvantages of servo valves and the spool valves , the fast hydraulic system controlled by the fast on - off valve is researched which uses the on - off valves as the pilot valves . they are used to control the opening and closing of the logic valves , thus they can control the pressure and the flow . so they can control the movement direction and the velocity of the piston
  为了克服伺服阀和滑阀的不足，本文所研究的基于快速开关阀的快速液压系统采用快速开关阀作先导阀，控制逻辑阀的开启和关闭，从而控制液流的通断和压力的高低、流量的大小，以实现对活塞运动方向、速度的控制。
• 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。