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检索条件"机构=Tianjin Key Laboratory for Control Theory and Application in Complicated Systems"

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Reactive Power Compensation Method for Distribution Network from Electric Vehicles

Reactive Power Compensation Method for Distribution Network ...

引用

Chinese control Conference (CCC)

作者： Youjie Ma Chang Liu Xuesong Zhou Zhiqiang Gaol Key Research Laboratory for Control Theory & Applications in Complicated Systems Tianjin University of Technology Tianjin

As Plug-in hybrid electric vehicles (PHEVs), dips usually occur on the bus because multiple PHEVs are connected to the same bus simultaneously. In view of the flaws of the existing traditional compensators and their extra cost, the grid -side reactive power compensation by the chargers of PHEVs during charging is expected to address this issue. To provide such compensation during charging, it is necessary that PHEVs incorporate bidirectional chargers. Among different types of bidirectional chargers, the DC voltage controller is unable to compensate voltage. Alternatively, the chargers with active power controllers regulate active power as well as reactive power independently, which is effective and convenient. In this paper, we propose a PR control strategy for the PHEV s chargers to tune reactive power online and to increase power factor. The simulation examples are given to verify the effectiveness of the proposed strategy.

关键词： Reactive power Batteries Vehicle-to-grid Topology Voltage control Mathematical model control systems

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Influences of Electric Vehicles on Power System

Influences of Electric Vehicles on Power System

引用

Chinese control Conference (CCC)

作者： Youjie Ma Long Tao Xuesong Zhou Zhiqiang Gao Key Research Laboratory for Control Theory & Applications in Complicated Systems Tianjin University of Technology Tianjin

The electric vehicle has brought fluctuation to the power system. The wide use of electric vehicles(EVs) has exacerbated this challenge. Firstly, the mathematical model of electric vehicles under random charging mode is given. Secondly, the power electronics charger topology is introduced. This paper analyzed the changes of the power system reliability when the proportion of electric vehicles increased, which shows the increase of electric vehicles under random charging mode poses a great threat to the reliability.

关键词： Power system stability Topology Power system reliability Electric vehicle charging Vehicle-to-grid

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Design of A Novel Drug-delivery Module for Active Locomotive Intestinal Capsule Endoscopy

Design of A Novel Drug-delivery Module for Active Locomotive...

引用

IEEE International Conference on Mechatronics and Automation

作者： Jian Guo Zihong Bao Shuxiang Guo Qiang Fu Tianjin Key Laboratory for Control Theory & Applications in Complicated Systems Tianjin University of Technology Tianjin China

Current Wireless Capsule Endoscopic systems (WCE) provide only diagnostic tools, but in the future, advanced functionalities such as controllable drug delivery could be available for clinicians. This paper proposes a spiral capsule robot driven by external magnetic field control wireless targeted drug delivery module, the module includes two radial magnetizing magnetic ring and a simple plastic chain, and it has a volume of 1.15 ml medicine cavity integration within the interior space. The control system of the robot including the driven system, motion control and drug release of the robots was presented. The robot module has two spiral grooves outside the module, which can be controlled in the external magnetic field. The inner two ring magnets can be operated and closed under the control of external strong pulse magnetic field. Then the robot was driven by a three-axis Helmholtz coil system. Finally, the feasibility of the function of drug release is verified. The developed capsule robot can be used to improve the capsule robot system, increase the function of the capsule robot, and can be used in the future medical treatment.

关键词： Drug delivery module Wireless capsule robot Ring-shaped magnet Helmholtz coils

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Reactive Power Compensation Method for Distribution Network from Electric Vehicles

Reactive Power Compensation Method for Distribution Network ...

引用

第37届中国控制会议

作者： Youjie Ma Chang Liu Xuesong Zhou Zhiqiang Gao Key Research Laboratory for Control Theory & Applications in Complicated Systems Tianjin University of Technology

As Plug-in hybrid electric vehicles(PHEVs), dips usually occur on the bus because multiple PHEVs are connected to the same bus simultaneously. In view of the flaws of the existing traditional compensators and their extra cost, the grid-side reactive power compensation by the chargers of PHEVs during charging is expected to address this issue. To provide such compensation during charging, it is necessary that PHEVs incorporate bidirectional chargers. Among different types of bidirectional chargers, the DC voltage controller is unable to compensate voltage. Alternatively, the chargers with active power controllers regulate active power as well as reactive power independently, which is effective and convenient. In this paper, we propose a PR control strategy for the PHEVs chargers to tune reactive power online and to increase power factor. The simulation examples are given to verify the effectiveness of the proposed strategy.

关键词： PHEV Charger V2G Reactive power compensation

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Research on Location Method of Pipe Climbing Robot based on Gyroscope

Research on Location Method of Pipe Climbing Robot based on ...

引用

IEEE International Conference on Mechatronics and Automation

作者： Lei Shao Shuai Yang Hongli Liu Ji Li Tianjin Key Laboratory for Control Theory & Applications in Complicated Systems Tianjin University of Technology Tianjin China

This paper introduced a location method of pipe climbing robot, this robot working in a big pipe that used to desalinate sea water. Traditional method on flaw detection of big sea desalination pipe is by human, This paper provide a new idea on location of the flaw detection robot. Using the fuse of multiple sensor information, the position and posture of climbing robot can be obtained. Gyroscope and the motor encoder can provide sufficient message to locate the robot. Also, with the moving of robot, some errors caused by slide of the robot track and the reading of sensors will happen. These errors can be eliminated by kalman filter. The practicable of this method has been proved by simulation of motion trajectory. Errors could also happened with the improper arrangement of pipeline, but this method is to calculate the subtraction of the sensor reading on two state. So we do not need to consider these errors, it doesn't affect the outcome at any arrangement of pipeline.

关键词： Gyroscopes Kalman filters Robot sensing systems Covariance matrices Climbing robots Pipelines

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A Method for Locating Reading Area of Digital Instrument Based on Color Characteristics

A Method for Locating Reading Area of Digital Instrument Bas...

引用

IEEE International Conference on Mechatronics and Automation

作者： Tao Wang Lei Shao Xiaoqi Chen Hongli Liu Zhenhai Tan Tianjin Key Laboratory for Control Theory & Applications in Complicated Systems Tianjin University of Technology Tianjin China

The goal of this work is to solve the positioning problems of the digital meter reading area under complicated background. This paper starts with the basic principles and methods of digital image processing, uses a special grayscale empirical algorithm to locate the LCD screen by analyzing the color characteristics of the LCD screen. Experiments on the actual pictures show that the proposed algorithm has good adaptability to most kinds of digital instruments with complicated dial information and effectively solves the positioning problems of the LCD screen, and positioning accuracy.

关键词： Liquid crystal displays Image color analysis Instruments Gray-scale Meter reading Image edge detection Brightness

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Design of the Speech control System for a Upper Limb Rehabilitation Robot Based on Wavelet De-noising

Design of the Speech Control System for a Upper Limb Rehabil...

引用

IEEE International Conference on Mechatronics and Automation

作者： Shuxiang Guo Zhi Wang Jian Guo Qiang Fu Nan Li Tianjin Key Laboratory for Control Theory & Applications in Complicated Systems Tianjin University of Technology Tianjin China

In order to help stroke patients to go on rehabilitation training, a new type of exoskeleton upper limb rehabilitation robot based on biomechanics has been designed in this paper, and speech control has been implemented. The speech control is suitable for patients who can speak. Doctors or family members can also assist patients in training. The system can help patients with hemiplegia to recover the upper limbs and fingers movement function, at the same time, it has the characteristics of small size, more portable and convenient operation. It can also effectively solve the shortage of traditional doctors and patients' one to one rehabilitation training. It is convenient for patients to use in the family. Anybody can help patients with rehabilitation training and has a broad application prospect in the field of rehabilitation. Finally, the speech control system was tested and the master-slave control experiment was implemented. In order to better perform speech recognition and further reduce the noise in the environment, the original speech signals have been de-noised with wavelet transform. The experimental results showed that the success rate of post-noise speech control system rehabilitation training is higher, and the average correct recognition rate of speech control is 94%, thus the feasibility of the speech control system is verified.

关键词： Exoskeleton Upper Limb Robot Wavelet denoising Speech control System Rehabilitation Training

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Research Review on the Energy-saving Technologies for Asynchronous Motors

Research Review on the Energy-saving Technologies for Asynch...

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IEEE International Conference on Mechatronics and Automation

作者： Xuesong Zhou Bao Yang Youjie Ma Zhiqiang Gao Key Research Laboratory for Control Theory & Applications in Complicated Systems Tianjin University of Technology Tianjin China

The study of energy saving of motor is hot issues in shortage of energy today. Most researchers have done a lot of works to study the energy saving of motor. Asynchronous motor in daily life, especially in the industrial production plays a very important role. Asynchronous motor is the main energy consumer. In practice, due to various reasons, the asynchronous motor run frequently under the condition of no load or light load, the condition of motor power factor and the efficiency is low, even the large electric energy waste and the loss of money. If the energy saving of asynchronous motor is in control and the efficiency of the motor is improved, the considerable electricity quantity for increasingly energy conservation will have extremely great significance for our society, nowadays. From the perspective of energy-saving of asynchronous motor, this paper introduces the new situation of the asynchronous motor energy-saving`s introduction, significance and research status at home and abroad. This paper mainly discussed the key technology of asynchronous motor energy-saving and its existing problems and briefly introduced its future development trend.

关键词： Induction motors Reactive power Stators Synchronous motors Voltage control Energy conservation

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Research Review on Big Data of the Smart Grid

Research Review on Big Data of the Smart Grid

引用

IEEE International Conference on Mechatronics and Automation

作者： Xuesong Zhou Kang Li Youjie Ma Zhiqiang Gao Key Research Laboratory for Control Theory & Applications in Complicated Systems Tianjin University of Technology Tianjin China

application of big data techniques in power system will contribute to the sustainable development of power industry companies and the establishment of strong smart grid. This paper presents a review on smart grids and big data. In order to achieve this, available articles in the literature were reviewed in perception with the features of big data and smart grids. Potential issues for smart grids and big data analytics were discussed. The recent solutions and challenges in smart grids and big data analytics were presented. The technologies used for smart big data analytics were evaluated. The contribution of this article was then presented. The results have been shown that "data" is now a new feature to be added as a main component of power systems.

关键词： Big data analytics Smart grid Review

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Design and implementation of smart home remote monitoring system based on ARM11

Design and implementation of smart home remote monitoring sy...

引用

第30届中国控制与决策会议

作者： Qi Wang Yunliang Wang School of Electrical and Electronic Engineering Tianjin University of Technology Tianjin Key Laboratory for Control Theory & Application in Complicated System

Considering the disadvantage of smart home on wiring,maintainability and mobility,a scheme for remote monitoring of smart home is proposed based on ARM and *** home network based on ZigBee Technology,and then gateway is developed with S3 C6410 which Linux operating system is embedded,using TD-LTE wireless terminal system as external network,so that the user could see the scene of the *** ultra-low power consumption and fast ARM11 processor so that real-time monitoring data is more *** system can be widely used to monitor the environmental data of hospitals,factories and other *** has good development prospects.

关键词： smart home remote monitoring ARM11 ZigBee

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