proportional valve

The author achieved the hardware circuit design and system algorithm design, using stepper motor to adjust the oil rod and pre-stroke sleeve, using the proportional solenoid valve to control EGR valve.

本文针对常柴4L88系列柴油机，采用步进电机控制油量调节齿杆和预行程滑套、比例电磁阀控制EGR阀门的方案，完成了控制系统的硬件电路和控制软件的设计。

Numerical Simulation of Electro-hydraulic Proportional Valve with Complex Flow Field Based on Fluent

基于Fluent的复杂通道比例阀的数值模拟研究

A feasible method to test frequency response characteristics of electro-hydraulic proportional throttle valve is presented.

介绍了电液比例节流阀频响特性测试的一种实用方法。

By means of controlling the electro-hydraulic proportional valve or electro-pneumatic proportional valve of each channel, a proving structure is loaded by 6 hydraulic actuators and 4 air chambers synchronously.

该方法通过基于H∞理论的鲁棒控制器、同步控制器及协调控制器的复合控制作用，分别控制各通道的电液或电气比例阀，实现6个液压加载通道与4个气压加载通道的同步协调加载。

This paper introduces an electrohydraulic control system based on PLC. A double close-loop control system with electro-hydraulic proportional valve is adopted.

一种基于PLC的电液自动控制系统，采用了电液比例阀的双闭环控制系统。

Control and faults analysis on oil pressure proportional valve of hydraulic press

调速器中间油压油（控制油）水压机油压比例阀的控制及故障分析

Research on a Novel Piezoelectric Type Electro-pneumatic PWM Proportional Valve

新型压电式电-气PWM比例阀的研究

This system realizes the close-loop control of electro-hydraulic proportional valve based on digital PID algorithm, and developed a monitor application program for this system that can adjust the value of PID parameter online.

该系统实现了注塑机电液比例阀的闭环控制，并开发了与之配套的上位机监控软件，实现了PID参数的在线调整。

Fuzzy-PID Control in Proportional Servo Valve System

比例伺服阀控系统Fuzzy-PID复合控制器的研究

Research on the Pneumatic Testing of Proportional Valve in Gas Station Machine

加油机比例阀气压测试性能的研究

Elaborates Al sheet mill spray system, introduces mill spray control mechanism of electro-air proportional valve.

阐述铝箔轧机喷淋系统, 介绍电 — 气比例阀在轧机油喷淋方面的控制机理.

Research of Electronic-hydraulic Proportional Valve Based on PWM Control Technology

基于PWM控制技术的电液比例阀的研究

Applied research on software closed-loop control by using PLC controlled proportional valve

采用PLC控制比例阀进行软件闭环控制的应用研究

The CAD software for a proportional valve and its working circuit is programmed by Visual Basic 6.0 and OOP ( object-oriented programming). The software includes a module for the selection and calculation of a proportional valve;

采用VISUAL BASIC6.0语言和面向对象的编程思想，开发了比例阀及其工作回路CAD软件。

Development and study of PVA-1000 series electrohydraulic proportional valve controller

PVA-1000系列电液比例阀控制器的开发研究

The Method of Invariable Pressure Difference Control for the CAT System of the Electrohydraulic Proportional Valve

电液比例阀CAT系统中的恒压降控制方法

Load Sensing Proportional Valve in Brake System for TOYOTA MS Series Passenger Cars

丰田MS系列轿车制动系感载比例阀

This paper applies electro-hydraulic proportional directional valve into CNC brake block holder milling machine and achieves the functions of accurately positioning automatically, adjusting angle automatically, and adjusting feeding speed of milling cutter automatically for the brake block holder miller.

将电液比例方向阀应用于数控瓦托铣床，实现了闸瓦托的自动精确定位、角度自动调整、高度自动调整以及铣刀进给速度自动调整等功能。

Software Development of Proportional Valve Selection and Its Circuit CAD

比例阀选择及其工作回路的CAD软件开发

Hydraulic impact which engender between proportional valve and hydraulic cylinder is important noise source.

操舵系统中,比例阀前的液压冲击是重要噪声源.

The Performance Analysis and Simulation of Pneumatic Servo System Based on Proportional Valve

基于比例阀的气压伺服系统性能分析及仿真

ECU Designing of Proportional Valve in Truck Engine Cooling System

汽车发动机冷却系比例阀的ECU控制设计

In combination with a linear wire wound potentiometer and a cam-actuated angle displacement sensor, a hydro-electric proportional relief valve is used as pressure controlling element of hoist system to compose an open loop control system for overload protection.

采用电液比例溢流阀作吊机系统压力控制元件，与线性线绕式电位器和凸轮构成的角位移传感器一起组成吊机过载保护开环控制系统。

The Special Clamp for Testing to Double Proportional Valve for Automobile

汽车复式比例阀测试专用夹具

Inertia Proportional Valve for Isuzu N-series Light Trucks

五十铃N系列轻型车惯性比例阀

This paper introduces the application of cartridge proportional relief valve used in coal mine hydraulic testing bed and also resumes its structure and characteristics.

介绍了插装式电磁比例溢流阀在煤矿液压试验台上的应用，并简述其结构及性能。

The electrohydraulic proportional valve close-loop control method by using fuzzy PID was presented, and it realized real-time system pressure control.

建立了试验系统的数学模型，试验系统采用模糊PID控制的方法实现了对电液比例阀的闭环控制，从而对系统压力的变化进行了实时调节。

The conveyer belt adopts the CST step driver control, and the realization of the soft-startup and power balance depends on the proportional valve and control system.

带式输送机采用CST多级驱动控制，通过比例阀及控制系统实现软起动与功率平衡。

The relations between duty ratio ( D) and average current ( I) is discussed, and it analyzes the flow characteristic curve of electronic-hydraulic proportional valve based on PWM ( Pulse Width Modulation) control technology.

分析了占空比D与平均电流I之间的关系，并对一基于PWM控制的电液比例阀的流量特性曲线进行了分析。

Research and Development of CAD System for Proportional Valve and Its Circuit

比例阀及其工作回路CAD的研究与开发