To solve the nonlinear problem of electro-hydraulic servo system, the article uses nonlinear differential geometric theory and adaptive model following control and establishes the nonlinear discrete reference model of non-symmetrical valve-control cylinder servo system. Dynamic feedback linearization was realized with the help of affine transform nonlinear feedback adaptive control of the model. Analysis and simulations show that the output of reference models can be followed exactly by the controlled plants when using the proposed AMFC scheme in electro hydraulic servo systems, high precision. It can be used other electro-hydraulic servo system, and will become very practical value nonlinear control methods.
论文针对电液伺服系统非线性难以控制的难题，将非线性状态反馈微分变换和模型跟随自适应控制结合，通过建立阀控非对称缸位置伺服系统的离散非线性参考模型，借助于仿射变换实现了对非线性电液伺服系统的动态反馈线性化，通过仿真说明 AMFC 在电液伺服系统能够准确跟随参考模型的输出，精度较高，说明 AMFC 通过与仿射非线性变换相结合将其扩展到电液非线性系统，将成为一种对液压伺服控制系统极有实用价值的非线性控制方法。
Based on the work mentioned above, the mathematical model of servo loading system of symmetrical valve controlled asymmetrical cylinder, and the mathematical model of hydraulic inherent part of servo loading system with differential pressure feed-back compensation are set up.
多通道伺服加载系统的液压执行元件通常都是对称阀控制非对称缸，它的加载特性与对称阀控制对称缸有明显的差异，有关这方面研究的文献和资料较少。
Dynamic Characteristics of Unsymmetrical Servo Hydro-cylinder Controlled by Four-sided Spool Valve Bead welding repair of under plate and Y-tube of spool valve in concrete convey - ing truck
四边阀控非对称液压缸的动态特性汽车起重机转台钢结构焊接变形的控制
A measuring method which is named postposition throttle nozzle pressure style pneumatic measuring principle for servo valve's overlap measuring is introduced, and a servo valve's orifice machining quality measuring instrument is developed, which is controlled by computer.
介绍一种后置节流孔压力式气动测量原理用于伺服阀叠合量的气动测量，研制了一台伺服阀阀口加工质量测量仪，并实现了微机自动控制。
A pneumatic hydraulic servo system controlled by PCM (Pulse Code Modulation) is realized by a new pneumatic hydraulic cylinder and low cost switching valve.
提出了一新型气液缸和用廉价开关阀实现PCM控制的气液伺服系统。
Study on Modeling and Simulation of Valve Controlled Cylinder Servo System for Hydraulic Bending Roll System
液压弯辊阀控缸伺服系统的建模及仿真研究
Then build the servo valve model and the valve controlled hydraulic cylinder model based on the hydrodynamics and the classical control theory.
然后通过流体力学和经典控制理论建立了伺服阀和阀控液压缸的数学模型。
Computer-controlled pneumatic servo positioning system based on 2D digital valve
基于2D数字阀的计算机控制气动伺服定位系统的研究
Study on constant pressure and high rigidity hydraulic mill by using flow controlled servo valve
用工业用流量伺服阀控制的恒压力高刚度液压轧机的研究
The application of lifting equipment in industrial is extremely universal, and hydraulic motors or hydraulic cylinder controlled by electric-hydraulic proportional valve or electro-hydraulic servo valve often used as its power sector. With motor or cylinder controlled by valve to achieve up or down and speed control.
提升装置在工业中应用极为普遍，其动力机构多采用电液比例阀或电液伺服阀控制液压马达或液压缸，以阀控马达或阀控缸来实现上升、下降以及速度控制。
The loading performance of a symmetrical valve controlled asymmetrical cylinder, the actuator of a multi-channel servo loading system, is different from that of symmetrical valve controlled symmetrical cylinder, which however has few references.
多通道伺服加载系统的液压执行元件通常都是对称阀控制非对称缸，它的加载特性与对称阀控制对称缸有明显的差异，有关这方面研究的文献和资料较少。
The valve-controlled nonsymmetrical hydraulic cylinder math model different from the general valve-controlled symmetrical hydraulic servo system model is rebuilt with deducting and solving parameters of the system.
区别于经典的阀控对称液压缸系统的建模方式，本文重新建立了阀控非对称缸的数学模型，并对被试缸系统和加载系统各个参数进行了详细的推导和求解。
Non-Parameter Model Identification of Hydraulic Servo Valve-controlled Motor System
非参数模型辨识在伺服阀控液压马达系统中的应用
According to the experimental results of the static and dynamic performance of the electrode servo control system of an electrical furnace in a steel plant, we identify the mathematical model of the valve controlled cylinder system with deadband nonlinearity.
本文根据对某钢厂引进电炉的电极伺服控制系统的静、动态特性的测试，辨识出具有死区非线性阀控缸系统的数学模型。
Analyses on the Mathematical Models of Valve Controlled Unsymmetrical Cylinder in an Active Servo Loading System
阀控非对称缸主动式伺服加载系统的数学模型
A novel pneumatic position servo system of the valve controlled cylinder by adopting two electro-pneumatic pressure proportional valves is presented, and using the self-tuning adaptive control scheme of pole placement approach the real-time control of the system is implemented.
提出采用两个电－气压力比例阀构成新颖的阀控缸气动位置伺服系统，并运用极点配置的自校正自适应控制方法实现了气缸活塞位移的实时控制。
With the development of control theory and computer technique, valve-controlled motor velocity servo control system has been widely used in many areas, such as: mine, port, factory, building site, ocean and so on.
随着控制理论和计算机技术的发展，阀控马达速度控制系统被广泛应用于矿山、港口、工厂、建筑、海洋等诸多领域。
Study on Velocity Servo for Valve - controlled Motor
阀控马达的速度控制研究
Open Loop Control of Numerical Controlled Hydraulic Servo Valve by the Use of PLC
PLC对数控液压伺服阀的开环控制选用液压阀的注意事项
The alternating servo-control PLC speed governor of turbine adopts the intellectual alternating-current servo driver system of full-digital alternating-current servo-motor and driver with leading screw installations, and a direct-link mechanical hydraulic follower system that its main pressure valve is directly controlled by the alternating-current servo driving system.
交流伺服控制式PLC水轮机调速器，采用了全数字式交流伺服电机和驱动器加丝杆螺母副的智能型交流伺服驱动系统，及由该交流伺服驱动系统直接控制主配压阀的直连型机械液压随动系统。