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Design and Analysis of a Novel Tension control method for Winding Machine

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Chinese Journal of Mechanical Engineering 2018年第6期31卷 79-94页

作者： Xiao-Ming Xu Wu-Xiang Zhang Xi-Lun Ding Ming Zhang Shi-Hou Wei School of Mechanical Engineering and Automation Beihang UniversityBeijing 100191China China Academy of Space Technology Beijing 100094China

Filament winding has emerged as the main process for carbon fiber reinforced plastic(CFRP) fabrication, and tension control plays a key role in enhancing the quality of the winding products. With the continuous improvement of prod?uct quality and e ciency, the precision of the tension control system is constantly improving. In this paper, a novel tension control method is proposed, which can regulate the fiber tension and transport speed of the winding process by governing the outputs of three di erent driven rollers(the torque of the unwind roll, the torque of the magnetic powder brake roller, and the speed of the master speed roller) in three levels. The mechanical structures and dynamic models of the driven rollers and idle rollers are established by considering the time?varying features of the roller radius and inertia. Moreover, the influence of parameters and speed variation on fiber tension is investigated using the increment model. Subsequently, the control method is proposed by applying fiber tension in three levels accord?ing to the features of the three driven rollers. An adaptive fuzzy controller is designed for tuning the PID parameters online to control the speed of the master speed roller. Simulation is conducted for verifying the performance and sta?bility of the proposed tension control method by comparing with those of the conventional PID control method. The result reveals that the proposed method outperforms the conventional method. Finally, an experimental platform is constructed, and the proposed system is applied to a winding machine. The performance and stability of the tension control system are demonstrated via a series of experiments using carbon fiber under di erent reference speeds and tensions. This paper proposes a novel tension control method to regulate the fiber tension and transport speed.

关键词： Tension control control method Fuzzy logic Filament winding

Research on control method for machining non-cylinder pin hole of piston

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第12期7卷 2073-2078页

作者： WU Yi-jie LENG Hong-bin ZHAO Zhang-rong CHEN Jun-hua Institute of Modern Manafacture Engineering Zhejiang University Hangzhou 310027 China Ningbo Institute of Technology Zhejiang University Ningbo 315010 China

The control method for machining non-cylinder pin hole of piston was studied systematically. A new method was presented by embedding giant magnetostrictive material (GMM) into the tool bar proper position. The model is established to characterize the relation between control current of coil and deformation of tool rod. A series of tests on deformation of giant magnetostrictive tool bar were done and the results validated the feasibility of the principle. The methods of measuring magne- tostrictive coefficient of rare earth GMM were analyzed. The measuring device with the bias field and prestress was designed. A series of experiments were done to test magnetostrictive coefficient. Experimental results supplied accurate characteristic pa- rameter for designing application device of GMM. The constitution of the developed control system made up of displacement detection and temperature detection for thermal deformation compensation was also introduced. The developed machine tool for boring the non-cylinder pin hole of piston has the micron order accuracy. This control method can be applied to other areas for machining precision or complex parts.

关键词： Giant magnetostrictive material (GMM) Piston Non-cylinder pin hole control method

control method for exoskeleton ankle with surface electromyography signals

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Journal of Shanghai University(English Edition) 2009年第4期13卷 270-273页

作者：张震王震蒋佳芯钱晋武 School of Mechatronics Engineering and Automation Shanghai University

This paper is concerned with a control method for an exoskeleton ankle with electromyography （EMG） signals. The EMG signals of human ankle and the exoskeleton ankle are introduced. Then a control method is proposed to control the exoskeleton ankle using the EMG signals. The feed-forward neural network model applied here is composed of four layers and uses the back-propagation training algorithm. The output signals from neural network are processed by the wavelet transform. Finally the control orders generated from the output signals are passed to the motor controller and drive the exoskeleton to move. Through experiments, the equality of neural network prediction of ankle movement is evaluated by giving the correlation coefficient. It is shown from the experimental results that the proposed method can accurately control the movement of ankle joint.

关键词： electromyography (EMG) exoskeleton ankle neural network control method

Study on Mt control method of friction welding

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China Welding 1992年第2期2卷 83-88页

作者： Wang Shiyuan Qiu Fengxiang Zhang Guifeng Xi’an Jiaotong University,Xi’an Chang Weichuan Nanjing Automobile Manufacturing Plant,Nanjing

A new type control method in friction welding is suggested in this pa- per,that is compositive control method of friction torque and friction time,it called Mt control method for *** principle of Mt control method and... 详细信息

关键词： control method friction welding friction torque

Research on the control method of Electromechanical Composite Brake Based on Electric Wheel Drive Vehicle

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Journal of Electronic Research and Application 2020年第5期4卷 1-4页

作者： Yitong Niu No.21 Shangdu Road Zhengdong New DistrictZhengzhou City 450000Henan ProvinceChina

Facing the increasingly serious environmental pollution and oil crisis,the development of automobile industry is facing a very serious *** the sustainable development of automobile industry,the electric vehicle using motor as driving equipment can realize“pollution-free”,which has become the focus of automobile research and development in many *** the research and development of electric vehicles,the electric vehicles driven by electric wheels have attracted the attention of all walks of life because of their ideal control characteristics and broad application *** this paper,the electric wheel drive vehicle as the research object,the electromechanical composite brake control system is studied and analyzed.

关键词： Electric wheeld rivevehicle Electromechanical composite braking control method

Review on control method of PVC Production Process

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维普期刊数据库

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Review on Control Method of PVC Production Process

A Novel Bionic Neural Network control method for Vivid Animation of Virtual Animal’s Locomotion

2010 Chinese control and Decision Conference

作者： Shuzhi Gao~(1,2) Xianwen Gao~1 1.School of Information Science and Engineering,Northeastern University,Shenyang,110004 2.School of Information and Engineering,Shenyang University of Chemical Technology,Shenyang,110142

＜正＞The up-to-the-minute research results of optimized operation and control technology on Polyvinyl Chloride （PVC） production process is introduced in *** mainly includes PVC production technique,intelligent control strategy and modelling *** representative results of theoretical studies and practical projects from 1990 to 2009 are also *** the end,the existent problems and future research directions of control technology in the PVC production process is concluded.

关键词： Polyvinyl Chloride Production Process Process control control method Automation Synthesis

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A Novel Bionic Neural Network Control Method for Vivid Anima...

DEVELOPMENT OF THE control methodOLOGY OF THE GIANT MAGNETOSTRICTIVE ACTUATOR BASED ON MAGNETIC FLUX DENSITY

第二十六届中国控制会议

作者： Zhang Daibing College of Mechatronics and Automation,National University of Defense Technology,Changsha 410073,P.R.China

The conventional anti-kinematics control method for animation of virtual animal’s locomotion involves lots of ob- servations and exterior posture simulations,and it has many disadvantages such as distortions,low fluency and *** paper proposes a novel method which inspired from the principles of animal’s locomotion central neural *** bionic neural network control system consists of a bionic neural network and the dynamic models of all *** bionic neural network is a chain network of nonlinear neural oscillators with time-delay excitory or inhibitory connections,and it produce the locomotion gait signals to control all jointal actuators to *** animation results on the fictive animal "China dragon" proved the validity,fluency and agility of the novel *** the novel method has favourable applications in the produc- tion of films or teleplays.

关键词： Animation Animal’s locomotion Bionic Neural Network control method Neural Oscillator

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Chinese Journal of Mechanical Engineering 2003年第4期16卷 359-362页

作者： JiaZhenyuan YangXing ShiChun GuoOongming SchoolofMechanicalEngineering DalianUniversityofTechnologyDalian116024China DepartmentofPrecisionInstrumentsandMechnology TsinghuaUniversityBeijing100084China SchoolofMechanicalEngineenng DalianUniversityofTechnologyDalian116024China

According to the principle of the magnetostriction generating mechanism, thecontrol model of giant magnetostriction material based on magnetic field and the control method withmagnetic flux density are developed. Furthermore, this control method is used to develop a giantmagnetostrictive micro-displacement actuator (GMA) and its driving system. Two control methods whosecontrol variables are current intensity and magnetic flux density are compared with each other byexperimental studies. Finally, effective methods on improving the linearity and control precision ofmicro-displacement actuator and reducing the hysteresis based on the controlling magnetic fluxdensity are obtained.

关键词： Giant magnetostriction Magnetic flux density control method Micro-displacement actuator

Inclusions in wrought superalloys:a review

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Journal of Iron and Steel Research International 2021年第8期28卷 921-937页

作者： Shu-feng Yang Shu-lei Yang Jing-long Qu Jin-hui Du Yu Gu Peng Zhao Ning Wang School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Gaona Aero Material Co. Ltd.Beijing 100081China

Inclusions in wrought superalloys significantly affect the stability of the alloy properties and limit their use and devel-opment in aeroengines and other *** types and sources of inclusions in wrought superalloys were reviewed with analysis of the conditions of inclusion formation from the viewpoints of thermodynamics and *** ther-modynamic data for inclusion formation in nickel-based and cobalt-based alloys were summarized and *** damage of inclusions to the fatigue and tensile properties and workability of these alloys and the mechanisms of crack initiation and propagation caused by inclusions were also discussed,and the effects of inclusions with different charac-teristics on crack propagation were *** addition,the control methods and mechanisms of inclusions in the triple smelting process(vacuum induction melting+protective electroslag remelting+vacuum arc remelting)were covered,providing a reference for improving the control technology of inclusions in wrought ***,the difficulties and development trends for inclusion control in wrought superalloys were discussed.

关键词： Wrought superalloy Triple smelting Inclusion control method