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第35届中国控制会议

作者： Bangjun Lei Xiang Wu Shumin Fei Electrical Engineering College Guizhou Institute of Technology College of Mathmatics and Computer Science Guizhou Normal University Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of EducationSchool of Automation Southeast University

ISBN: (纸本)9781509009107

Using the pseudo-generalized Hamiltonian method, this paper investigates the decentralized nonlinear robust coordinated control of multiple static synchronous compensators(STATCOMs) in multi-machine multiload power systems. First,the uncertain nonlinear differential algebraic equation model is constructed for the power system. Then, the dissipative pseudogeneralized Hamiltonian realization of the system is established by means of variable transformation and prefeedback ***, based on the obtained dissipative pseudo-generalized Hamiltonian realization, a new-style decentralized nonlinear robust coordinated controller is put forward. Simulation results demonstrate the effectiveness and robustness of the control scheme.

关键词： Pseudo-generalized Hamiltonian function method Uncertain nonlinear differential algebraic system Multimachine power systems Multiple STATCOMs Decentralized nonlinear robust coordinated control

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Structure damage diagnostic method of high-flow control valve stem

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Key engineering Materials 2016年 667卷 408-412页

作者： Cao, Fang Kang, Rongjian School of Mechanical and Automotive Engineering Qilu University of Technology Jinan China Key Laboratory of Advanced Manufacturing and Measurement and Control Technology for Light Industry Universities of Shandong Qilu University of Technology Jinan China Jinan Changqing Planning and Architectural Design Research Institute Jinan China

According to the real structure and work condition of a high-flow mixed gas control valve used in recycling generating electricity project, a modal analysis model based on fluid-structure coupling system of control valve is set up. The natural frequency and mode of valve plug and stem is obtained. The structure damage diagnostic method of high-flow valve stem is put forward. According to the change of natural frequency of the valve stem to judge appearance of fracture cracks is explored. According to the amount by which the variation of natural frequency to determine the size of crack is discussed. It is the preliminary diagnosis to the damage of a high-Flow control valve stem in the special working environment, to avoid the gas leaks, the failure of valve action, adjust or commutation, etc. © (2016) Trans Tech Publications, Switzerland.

关键词： Modal analysis

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Performance Optimization of a 2-DoF Parallel Mechanism based on Multiple Indices

Performance Optimization of a 2-DoF Parallel Mechanism based...

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IEEE International Conference on Mechatronics and Automation

作者： Qi Hao Bo Liu Mingxin Wang Jing Zhou Department of Aviation Mechanical Engineering Institute of Army Aviation Beijing Province 101123 China Beijing Aerospace Measurement & Control Technology Co. LTD Beijing Province 100041 China

ISBN: (纸本)9781509023974

In order to optimize the kinematic and dynamic performance of a 2-DoF planar parallel mechanism used in hybrid machines, a multi-objective optimization method is introduced. Based on the compare of the common kinematic analysis method and dynamic analysis method, the kinematic and dynamic performances evaluation indices which can be used in the performance optimization are introduced. Then a multi indices optimization method based on genetic algorithm is investigated to achieve the multi performance optimization of the parallel mechanism. In the optimization method, the kinematic, stiffness and dynamic performances are improved by optimizing the geometric and structural parameters of the parallel mechanism. The simulation result indicates that the optimization method is of practical value to improve the development of the parallel mechanism.

关键词： Parallel mechanism performance optimization global conditioning index comprehensive acceleration ellipsoid genetic algorithm

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Double channel dynamic error correction of methane sensor 21

Double channel dynamic error correction of methane sensor

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21st IMEKO World Congress on measurement in Research and Industry

作者： Bogacz, Ryszard Krupanek, Beata Silesian University of Technology Faculty of Electrical Engineering Institute of Measurement Science Electronics and Control Gliwice Poland

The primary reason for measuring methane is to improve the safety of the mines. In recent years, there have been many fatalities in underground coal mine explosions in which methane was a contributing factor. The rapid detection of methane is very important from the point of view of safety of mine workers. This paper presents a concept of fast methane detection by prediction its concentration in dynamic states. Two methods of dynamic corrections of methane concentration - single-channel and double-channels were described.

关键词： Methane

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A simulations of performance algorithms used in multi-nodes wireless systems 21

A simulations of performance algorithms used in multi-nodes ...

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21st IMEKO World Congress on measurement in Research and Industry

作者： Krupanek, Beata Bogacz, Ryszard Silesian University of Technology Faculty of Electrical Engineering Institute of Measurement Science Electronics and Control Gliwice Poland

Paper presents a study under the Quality of Service in modern wireless sensor networks. Such a networks are characterized by small amount of data transmitted in fixed periods. Very often this data must by transmitted in real time so data transmission delays should be well known. This article shows multimode network simulated in packet OPNET Modeler. Also nowadays the quality of services is very important especially in multinodes systems such a home automation or measurement systems.

关键词： Quality of service

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Diagnostic system for thermal monitoring of buildings 21

Diagnostic system for thermal monitoring of buildings

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21st IMEKO World Congress on measurement in Research and Industry

作者： Bogacz, Ryszard Krupanek, Beata Silesian University of Technology Faculty of Electrical Engineering Institute of Measurement Science Electronics and Control Gliwice Poland

The paper presents properties of a system for measurements of quantities which determine thermal state of buildings. The system can be used both in investigations of thermal processes in buildings and for monitoring thermal processes to perform an energy consumption audit. Each measuring instrument is supplied by a separated task, which enables simple modification of programs and introduction of new instrument tasks. The diagnostic system is managed from a local computer by using the program written in the LabView environment.

关键词： Energy utilization

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Design of a flyback switching power for smart meter

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International Journal of Smart Home 2016年第9期10卷 207-216页

作者： Jian-Ying, Fan Yu-Ling, Zhang Dong-Qing, Shi The higher educational key labortory School of Measure-control Technology and Communication Engineering of Heilongjiang Province Harbin University of Science and Technology Harbin150080 China Heilongjiang Province Electronic Information Products Supervision Inspection Institute Harbin150080 China

With switching power supply being widely used in Smart Meter, there exists more restrictions on the performance of it. This paper designs a single-ended flyback switching power supply based on LNK364DN chips which is used in intelligent single-phase table, Compares the advantages and disadvantages of the switching power supply and the traditional linear regulated power supply, and introduces the reaction type switching power supply design principle and working process. In order to satisfy the security requirements, this paper also designs the EMI suppression circuit, surge suppression current, clamp circuit, etc. The design process, including the maximum duty cycle including transformer, the primary inductance calculation, etc, of the flyback type switch power supply transformer is introduced in detail. The experimental results show that the switch regulated power supply has small volume, good electromagnetic compatibility, small ripple, low power consumption, high efficiency of AC/DC transform and excellent performance .

关键词： Energy efficiency

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Integrated navigation for pedestrian with building heading algorithm and inertial measurement unit

Integrated navigation for pedestrian with building heading a...

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International Conference on control, Automation and Information Sciences (ICCAIS)

作者： Yingbo Cai Qian Sun Ya Zhang Chunzhu Yu Hongmei Bai School of Electrical Engineering and Automation Harbin Institute of Technology Harbin China College of Information and Communication Engineering Harbin Engineering University Harbin China Beijing Aerospace Automatic Control Research Institute Beijing China College of Automation Harbin Engineering University Harbin China

ISBN: (纸本)9781509006519

To improve the positioning accuracy in indoor environments, we use the Inertial Navigation System (INS) algorithm to perform the pedestrian tracking, and the measurements consist of two parts: the velocity error and the heading error. The velocity error can be gotten from the navigation result. Meanwhile, we get the heading error in two ways. First, taking the magnetometer as the heading resource, the magnetic perturbations can be eliminated through a new ellipsoid fitting based calibration algorithm. Furthermore, the building heading algorithm(BHA) is also adopted to aid the Inertial measurement Unit (IMU), the corresponding building heading can be derived based on the motion path. Finally, the Kalman filter (KF) is utilized to fuse the data in order to compensate the sensor error and navigation solution through a 15-dimentional state vector. As a result, some field trials were taken to prove the validity of the proposed algorithm. By contrast the result of Magnetometer (MAG)/BHA/INS and the Zero Velocity update (ZUPT) algorithms, we proved that the algorithm of MAG/BHA aiding INS can effectively improve the indoor positioning accuracy which shows better performance.

关键词： Navigation Magnetometers Buildings Micromechanical devices Calibration Automation Conferences

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Inertial navigation system positioning assisted by star sensor

Inertial navigation system positioning assisted by star sens...

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International Conference on control, Automation and Information Sciences (ICCAIS)

作者： Hongsong Du Qian Sun Ya Zhang Zhao Qi Ya Wen Navy Academy of Armament The Research Institute of Ships Beijing China College of Information and Communication Engineering Harbin Engineering University Harbin China School of Electrical Engineering and Automation Harbin Institute of Technology Harbin China Beijing Aerospace Automatic Control Research Institute Beijing China

ISBN: (纸本)9781509006519

The Star Sensor can be used to assist the inertial navigation system (INS) for navigation and positioning, restraining the accumulated error caused by the inertial components. During the integrated navigation process, the Star Sensor is installed above the INS, generated installation errors between the INS body coordinate system and the Star Sensor body coordinate system. In order to increase the system accuracy, a new gyro error model is established in this paper which taken full account of various error factors. The gyro drifts and the gyro errors coefficients are considered as the state variables. The attitude information of Star Sensor is used as the high-accurate information to construct the observation with the attitude information of INS. Taken the nonlinearity of the actual system into account, the nonlinear filter Cubature Kalman Filter (CKF) is used to estimate the gyro errors commendably. The experiment results showed that the positioning error reduced a lot by utilizing this novel method.

关键词： Mathematical model Inertial navigation Calibration Satellite navigation systems Automation Quaternions

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A JPSO algorithm for SML estimation of DOA

A JPSO algorithm for SML estimation of DOA

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International Symposium on communications and Information Technologies (ISCIT)

作者： Haihua Chen Shibao Li Jianhang Liu Chen Gong Fen Liu Masakiyo Suzuki College of Computer and Communication Engineering China University of Petroleum Qingdao Shandong College of Information and Control Engineering China University of Petroleum Qingdao Shandong China Graduate School of Engineering Kitami Institute of Technology Kitami Hokkaido Japan

ISBN: (纸本)9781509041008

The estimation of DOA is an important problem in sensor array signal processing and its industrial applications. Among all the solving techniques for DOA, the Stochastic Maximum Likelihood (SML) algorithm is well-known for its high accuracy of DOA estimation. However, its computational complexity is very high because a multi-dimensional nonlinear optimization problem is involved. The Particle Swarm Optimization (PSO) algorithm is considered as a rather efficient way for multi-dimensional non-linear optimization problems in DOA estimation. However Conventional PSO algorithm usually needs a large number of particles and the iteration number is also a litter high when all the particles converge. As a result, the computational complexity is still a litter high. This paper proposes a low complexity Joint-PSO (JPSO) algorithm for SML estimation. It uses the solution of Estimation of Signal Parameters via Rotational Invariance Techniques (ESPRIT) and stochastic Cramer-Rao bound (CRB) to determine a novel initialization space. In this case, smaller number of particles and less iteration number are required. Therefore, the computational complexity can be greatly reduced. Simulation results are also shown to demonstrate the validity of proposed JPSO algorithm.

关键词： Direction-of-arrival estimation Computational complexity Signal processing algorithms Covariance matrices Sensor arrays Maximum likelihood estimation

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