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检索条件"机构=Tianjin Key Laboratory for Control Theory& Applications in Complicated System"

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A Conducted Immunity Test Method Based on Electromagnetic Clamp Injection

A Conducted Immunity Test Method Based on Electromagnetic Cl...

引用

第37届中国控制会议

作者： Juan Li Mingxing Du Xing Zhang Kexi Wei Tianjin key laboratory of control theory & applications in complicated system Tianjin University of Technology

In the study of EMC performance,the susceptibility test of equipment is especially *** this paper,the switching power supply(model FDPS-50 A) is taken as an *** susceptibility test is carried out under the condition of no-load and load with the method of electromagnetic forceps *** disturbance signal is generated by the signal source and amplified by the power amplifier and *** the processed interference signal into the cable by using the electromagnetic injection clamp,and then injecting the interference voltage(140 dBμV) into the switching power supply to test the voltage stability of the output terminal at different *** the test,the electromagnetic susceptibility of this model of switching power supply is obtained,the validity of this test method is verified,and it is proved that it can be used in the testing of other *** predictive analysis of conducted electromagnetic susceptibility of power electronic equipment has certain practical significance.

关键词： Switching Power Supply Electromagnetic Immunity RF Conduction

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Application of improved PSO-BP neural network in fault detection of liquid-propellant rocket engine 15

Application of improved PSO-BP neural network in fault detec...

引用

15th IEEE International Conference on Mechatronics and Automation, ICMA 2018

作者： Li, Ningning Xue, Wei Zhao, Songbo Gao, Qiang Li, Dahua Xu, Liang Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems School of Electrical and Electronic Engineering Tianjin University of Technology Tianjin300384 China Beijing Aerospace Propulsion Institute Beijing100076 China

ISBN: (纸本)9781538660720

Because liquid-propellant rocket engine (LRE) is working in complex environment, the reliability of some traditional fault detection methods is low due to the characteristics of limited fault samples, small samples, high coupling and nonlinear variation of the main engine. In order to improve the shortcomings of fault detection in traditional method, this paper presents a fault detection algorithm (PSO-BP) based on improved particle swarm optimization (PSO) algorithm and BP neural network. The structure of BP neural network is established, the collected samples are input into PSO algorithm to optimize, and the optimal BP parameters are found, and the fault detection model of the main engine is established. Finally, the established model is used to simulate the fault. The simulation results show that the proposed algorithm can improves the accuracy of fault detection in the health management of LRE and provides a guarantee for the market demand of commercial launch. © 2018 IEEE.

关键词： Fault detection

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Soft-Switch Charging Power Based on Digital ZVSZCS PWM 2

Soft-Switch Charging Power Based on Digital ZVSZCS PWM

引用

2nd IEEE Advanced Information Management, Communicates, Electronic and Automation control Conference, IMCEC 2018

作者： Fu, Wei Li, Guohong Zhao, Tong Tianjin University of Technology Tianjin Key-Laboratory for Control Theory and Applications in Complicated System China

ISBN: (纸本)9781538618035

This paper presents a soft-switching charging system. The system inputted 220VAC contains the main circuit of full bridge phase-shifting soft-switching DC-DC converter and the system controller of MC56F8346. Current double closed-loop controlling method, the leading leg switch of the full-bridge converter realizes zero voltage switching and the lagging leg switch of the full-bridge converter realizes zero current switching are controlled by a program. And the system integration has been completed. The experimental results that the system has reached the requirements of design and it is feasible. © 2018 IEEE.

关键词： Zero voltage switching

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Reactive Power control of Compound Reactive Power Compensation Device

Reactive Power Control of Compound Reactive Power Compensati...

引用

IEEE International Conference on Mechatronics and Automation

作者： Hongjun Wang Bohui Wu Hui Zhao Youjun Yue Tianjin Key laboratory for Control Theory and Applications in Complicated System Tianjin University of Technology Tianjin China

A low-cost composite reactive power compensation model is proposed. The model consists of a Thyristor Switched Capacitor (TSC), a Thyristor controlled Reactor (TCR) and a Static Var Generator (SVG). Firstly the paper completes the preliminary compensation by the large-capacity TSC+TCR module, and then the small-capacity SVG is responsible for subsequent fine compensation and suppression of voltage flicker. This two modules work together to improve the best in performance; the TSC+TCR adopts a method based on In the selective configuration strategy of the historical state, The output will change in a fixed form, the SVG adopts the direct current control, SVG is equivalent to a controlled current source, Feedback control of SVG Output Current Instantaneous Value Using Tracking PWM Technology; the Simulink simulation model is established to verify the effectiveness of the composite reactive power compensation device. The simulation results show that the control strategy has the advantages of fast response and good compensation effect.

关键词： Reactive power Voltage control control systems Mathematical model Capacitors Voltage fluctuations Pulse width modulation

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Model-Reference Scheduling and control Co-design with Two Paths

Model-Reference Scheduling and Control Co-design with Two Pa...

引用

IEEE International Conference on Mechatronics and Automation

作者： Shunli Zhao Yuehui Ji Tianjin Key Laboratory for Control Theory & Applications in Complicated System Tianjin University of Technology Tianjin China

There have been growing concerns in networked control system with communication constraints. In the paper, a novel scheduling strategy, model-reference scheduling scheme, is proposed for dealing with the distribution of the network resource for the case that network exists not only in forward path but also in feedback path. The states and the control signals gain the access to the network by computing the difference between the real system and the ideal one. The stability analysis and the control and scheduling co-design are given by formulating the problem as a linear equality equation. The proposed strategy is demonstrated through a simple simulation.

关键词： Sensors Delay effects Dynamic scheduling Networked control systems Processor scheduling Task analysis

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Development of Permanent Magnet Synchronous Motor RCP Based on Hardware-in-the-loop Simulation

Development of Permanent Magnet Synchronous Motor RCP Based ...

引用

IEEE International Conference on Mechatronics and Automation

作者： Gang Zhao Shizhong Zhang Tianjin Key laboratory for Control Theory and Applications in Complicated System Tianjin University of Technology Tianjin China

This paper carries out a study on a high efficiency permanent magnet synchronous motor (PMSM) development method-rapid control prototype (RCP). A specific introduction of the support of hardware-in-the-Ioop simulation platform for RCP and the development process are given. Hardware in the loop simulation model is built by comparing and analysing of the characteristics of the two control methods and using the hardware and software environment of the system. The conversion from simulation model to code model is realized by using MATLAB and CCS and the application layer code is integrated with the hardware underlying driver code of the hardware-in-the-Ioop simulation platform. The automatic code generation is downloaded to the hardware-in-the-Ioop simulation platform to verify the accuracy of the theoretical calculation. The results show that the mathematical model performed as same as the hardware-in-loop simulation with the same PID parameters, which achieves the expected effect.

关键词： Mathematical model Torque Reactive power Permanent magnet motors Stators Synchronous motors Hardware

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The Prediction of Greenhouse Temperature and Humidity Based on LM-RBF Network

The Prediction of Greenhouse Temperature and Humidity Based ...

引用

IEEE International Conference on Mechatronics and Automation

作者： Youjun Yue Jun Quan Hui Zhao Hongjun Wang Tianjin Key laboratory for Control Theory and Applications in Complicated System Tianjin University of Technology Tianjin China

In order to improve the accuracy of prediction for the temperature and humidity of the northern greenhouse, this paper proposes a model to predict the temperature and humidity of a greenhouse based on improved LM-RBF. The input data of the model were measured in a greenhouse in tianjin in March. This model uses the inside and outside meteorological data of the greenhouse as input, and the temperature and humidity in a greenhouse as output. The higher prediction accuracy is obtained by the experimental results, which proved the feasibility of this scheme. This model can be used to forecast the temperature and humidity of a greenhouse and guide the control of the temperature and humidity of a greenhouse.

关键词： RBF network LM algorithm Temperature and humidity prediction

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Prediction of User Behavior in Smart Home Based on Improved ARIMA Model

Prediction of User Behavior in Smart Home Based on Improved ...

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IEEE International Conference on Mechatronics and Automation

作者： Hongjun Wang Kaiying Wang Hui Zhao Youjun Yue Tianjin Key laboratory for Control Theory and Applications in Complicated System Tianjin University of Technology Tianjin China

In the research of prediction on smart home user behavior, the method of improving ARIMA model to predict user behavior is proposed. The water heater's turn-on time is taken as a case, by analyzing the original data of the water heater turn-on time for 12 consecutive weeks, an improved ARIMA model is established to predict the time when the user turns on the water heater in the 13th week. The results of the comparison between the improved ARIMA model and the ARIMA model shows that the improved ARIMA model has better prediction performance and meet the demand on accurate short-term prediction. This model can be extended to predict the time when users turn on other smart home appliances and smart home user behavior.

关键词： Predictive models Mathematical model Water heating Data models Smart homes Time series analysis Analytical models

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2GHz PLL frequency synthesize 15

2GHz PLL frequency synthesize

引用

15th IEEE International Conference on Mechatronics and Automation, ICMA 2018

作者： Li, Guohong Wang, Yaozhong Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems 391Binshui XidaoXiqing District Tianjin300384 China Tianjin University of Technology 391Binshui XidaoXiqing District Tianjin300384 China

ISBN: (纸本)9781538660720

This paper mainly introduces the design, debugging and testing for 2GHz PLL frequency synthesizer, which applied to radar microwave module. The frequency synthesizer adopts the principle of phase-locked, the core component is LMX2430 which is integrated Low-power frequency synthesizer with a high-speed dual-mode front divider. The system equipped with a low noise operational amplifier LM6211 and a high-performance voltage-control oscillator SM2100. The frequency of the 16MHz crystal is selected as the reference frequency of the phase-locked loop. Finally, the frequency synthesizer is tested experimentally, and the result achieved the design goal. © 2018 IEEE.

关键词： Phase locked loops

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Design and implementation of digital sine wave inverter power supply 15

Design and implementation of digital sine wave inverter powe...

引用

15th IEEE International Conference on Mechatronics and Automation, ICMA 2018

作者： Fu, Wei Li, Guohong Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems 391Binshui XidaoXiqing District Tianjin300384 China Tianjin University of Technology 391Binshui XidaoXiqing District Tianjin300384 China

ISBN: (纸本)9781538660720

A scheme of digital inverter power supply system is given in this paper. The system input 36VDC, through the Boost circuit, the single-phase inverter turns DC into high frequency alternating current, then the high frequency transformer is isolated by the high frequency transformer, and the high frequency part is filtered through the low pass filter, and the sine wave alternating current of 220VAC 50Hz is obtained. With STM32F103VCT6 as the system controller, through the software programming, through the Boost circuit, the output voltage and current double closed loop PWM soft switch control is carried out, and the system integration is completed. The experimental results show that the system meets the design requirements and the system design is feasible. © 2018 IEEE.

关键词： Low pass filters

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