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2013 21st Mediterranean Conference on control and automation, MED 2013

作者： Dlapa, Marek Department of Automation and Control Engineering Faculty of Applied Informatics TBU in Zlin nám. T. G. Masaryka 5555 760 01 Zlín Czech Republic

ISBN: (纸本)9781479909971

The paper deals with the robust control of airflow in air heating set. The identification is performed using step responses and approximation via second order system. The controller is designed using the structured singular value (SSV or μ) and algebraic approach. Since the cost function is nonconvex the optimization cannot be done using standard tools. Hence an evolutionary algorithm - Differential Migration (DM) is employed yielding good results in this case. The functionality of the controller is verified through experiments on the real plant. © 2013 IEEE.

关键词： Three term control systems

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A novel human detection algorithm based on foreground segmentation

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Journal of Fiber Bioengineering and Informatics 2013年第3期6卷 285-292页

作者： Liu, Chunguang Gong, Zhiheng Zhu, Huijie Liu, Yanan Zhou, Yue Han, Zhonghua Editorial Department of Journal Shenyang Jianzhu University Shenyang 110168 China Faculty of Information and Control Engineering Shenyang Jianzhu University Shenyang 110168 China Department of Planning and Finance Shenyang Jianzhu University Shenyang 110168 China Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 China

In computer vision applications, human detection occupies an important position. HOG (Histograms of Oriented Gradient) is a classical algorithm which was used in the area of object detection. But the complex background would greatly affect the test accuracy when taking HOG as a human characteristic for human detection. In order to improve the accuracy of human detection, this paper applied a new algorithm which was based on foreground segmentation. We could get each closed region by Oriented Watershed Transform and Ultrametric Contour Map, then the foreground and the background could be distinguished. Finally we removed the background and calculated the foreground characteristic. The experimental results show that this approach was effective in improving detection accuracy. © 2013 Binary Information Press & Textile Bioengineering and Informatics Society September 2013.

关键词： Object detection

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PCA & HMM based arm gesture recognition using inertial measurement unit 13

PCA & HMM based arm gesture recognition using inertial measu...

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8th International Conference on Body Area Networks, BODYNETS 2013

作者： Zhang, Yinlong Li, Yang Liang, Wei Zeng, Ziming Tan, Jindong Key Laboratory of Networked Control Systems Shenyang Institute of Automation Chinese Academy of Sciences Shenyang110016 China University of Chinese Academy of Sciences Beijing100049 China Information and Control Engineering Faculty Shenyang Jianzhu University Shenyang110168 China Department of Mechanical Aerospace and Biomedical Engineering University of Tennessee Knoxville Tennessee United States

ISBN: (纸本)9781936968893

This paper presents a novel arm gesture recognition approach that is capable of recognizing seven commonly used sequential arm gestures based upon the outputs from Inertial Measurement Unit (IMU) integrated with 3-D accelerometer and 3-D gyroscope. Unlike the traditional gesture recognition methods where the states in the gesture sequence are irrelevant, our proposed recognition system is intentionally designed to recognize the meaningful gesture sequence where each gesture state relates to the contiguous states which is applicable in the specific occasions such as the police directing the traffic and the arm-injured patients performing a set of arm gestures for effective rehabilitation. In the proposed arm gesture recognition system, the waveforms of the inertial outputs, i.e., 3-D accelerations and 3-D angular rates are automatically segmented for each arm gesture trace at first. Then we employ the Principal Component Analysis (PCA) - A computationally efficient feature selection method characteristic of compressing the inertial data and minimizing the influences of gesture variations. These selected features from PCA are compared with those standard features stored in pattern templates to acquire the gesture observation sequence that satisfy the Markov property. Finally, the Hidden Markov Model is applied in deducing the most likely arm gesture sequence. The experimental results show that our arm gesture classifier achieves up to 93% accuracy. By comparing with the other published recognition methods, our approach verifies the robustness and feasibility in arm gesture recognition using wearable MEMS sensors. © 2013 ICST 978-1-936968-89-3.

关键词： Hidden Markov models

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A New Challenge in Ecological Process control Based on PLCs with Profinet Communication Protocol

A New Challenge in Ecological Process Control Based on PLCs ...

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International Conference on control Systems and Computer Science (CSCS)

作者： Alexandru Dumitrascu Dan Stefanoiu Ionut Tomita Department of Automatic Control and System Engineering Automatic Control and Computers Faculty University Politehnica of Bucharest Romania Asti Automation SRL Bucharest Romania

ISBN: (纸本)9781467361408

The current situation of environmental resources requires their efficient usage through efficient process control. But, process control can not be achieved without an essential component: the communication between all devices, such as sensors, controllers, actuators, programming stations etc. The aim is to achieve the irrigation process of plants in greenhouse conditions. Therefore, it is submitted a comprehensive application that proposes to be a distributed control system including data acquisition and processing, both local and remote monitoring of the process parameters. The distributed system is based on modern equipment: Siemens Simatic PLCs and HMI, Memsic e̅Ko Pro wireless sensors network, level sensors for irrigation tanks and actuators such as on/off valves and pumps. In terms of communication between equipments, an industrial bus and protocols were used - Profinet and wireless communication. The software part is provided by TIA Portal with STEP 7 and WinCC flexible RT and LOGO! Soft Comfort for programming the automation devices. ModbusTCP was used to develop the communication protocol between central devices.

关键词： Sensors Irrigation Process control Green products Wireless sensor networks Monitoring control systems

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Design of inertial module for rehabilitation device

Design of inertial module for rehabilitation device

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International Symposium on Applied Machine Intelligence and Informatics (SAMI)

作者： D. Šimšík J. Karchňák B. Jobbágy A. Galajdová Mechanical Engineering Faculty/ Department of Automation Control and Human-Machine Interactions Technical University of Košice Kosice Slovakia

The paper describes design and functions of the prototype of the inertial module for motion analysis of rehabilitated persons by an robotic rehabilitation device. Described device should be used for motion analysis and progress monitoring during rehabilitation processes. In control system of rehabilitation device, inertial module may be used for safety monitoring of rehabilitation process.

关键词： Prototypes Monitoring control systems Wearable sensors Joints Robots

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Comparison of different methods for pneumatic artificial muscle control

Comparison of different methods for pneumatic artificial mus...

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International Symposium on Applied Machine Intelligence and Informatics (SAMI)

作者： Marcel More Ondrej Líška Faculty of Mechanical Engineering/ Department of Automation Control and Human Machine Interaction Technical University of Košice Kosice Slovakia

Actuators based on pneumatic artificial muscles (PAM) have their specific attributes that make their control different than control of common pneumatic drives. Selection of right method of control for specific device is important for further successful design of control system. This paper presents some control methods that can be used in devices actuated by PAM drives.

关键词： Valves Muscles Actuators Regulators Assembly Fluids

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Rate control and flight stabilization for a quadrotor system

Rate control and flight stabilization for a quadrotor system

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International Conference on Unmanned Aircraft Systems (ICUAS)

作者： Benjamin Jahn Alexander Barth Kai Wulff Tobias Simon Jan Römisch Control Engineering Group Computer Science and Automation Faculty Ilmenau University of Technology Ilmenau Germany Integrated Communication Systems Group Computer Science and Automation Faculty Ilmenau University of Technology Ilmenau Germany

In this paper we propose a stability augmentation system for a quadrotor, enabling direct rate control for a human pilot. Our system includes feedforward for rate control, feedback for disturbance attenuation, and an online optimization technique for handling input restrictions. We show that the proposed algorithms are able to stabilize the system under highly challenging flight conditions, such as wind gusts and fast manual descend. Our input restriction technique ensures that the revolution speeds for the desired torques are feasible. The complete control system is analyzed using MATLAB, and full experimental validation is provided based on a quadrotor prototype.

关键词： Mathematical model Torque Actuators Angular velocity Equations Feedforward neural networks Stability analysis

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GA-based sliding mode controller for yaw stability improvement

GA-based sliding mode controller for yaw stability improveme...

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Asian control Conference

作者： Norhazimi Hamzah Yahaya Md Sam Hazlina Selamat M Khairi Aripin Faculty of Electrical Engineering Universiti Teknologi MARA Pulau Pinang Malaysia Faculty of Electrical Engineering Universiti Teknologi Malaysia Johor Malaysia Control Instrumentation & Automation Department. Faculty of Electrical Engineering UTeM Malacca Malaysia

ISBN: (纸本)9781467357661

The vehicle handling and stability can be enhanced with direct yaw moment control (DYC). In this paper, a sliding mode controller (SMC) with genetic algorithm optimization is proposed for the yaw moment control. A single track vehicle model with nonlinear tire forces is utilized for the controller design. The effectiveness of the proposed controller is compared to conventional sliding mode controller by co-simulations in CarSim and Matlab/Simulink. The simulation results of a step steer maneuvers shows that the proposed controller give better performance in tracking the desired yaw rate and control other necessary response for the vehicle handling and stability. In addition, the chattering phenomenon is also reduced, giving a smooth tracking trajectory.

关键词： Vehicles Genetic algorithms Tires Wheels Stability analysis Force Mathematical model

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Application of optimization technique for PID controller tuning in position tracking of pneumatic actuator system

Application of optimization technique for PID controller tun...

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International Colloquium on Signal Processing & Its Applications, CSPA

作者： N.H Sunar M.F. Rahmat Z. H. Ismail A. M. Faudzi Sy Najib Sy Salim Sharatul Izah Samsudin Department of Mechatronics and Control Engineering Faculty of Electrical Engineering Universiti Teknologi Malaysia Johor Malaysia Department of Control Instrument and Automation Faculty of Electrical Engineering Universiti Teknikal Malaysia Melaka Melaka Malaysia Department of Industrial Electronics Faculty of Electronics and Computer Engineering Universiti Teknikal Malaysia Melaka Melaka Malaysia

In this paper, two optimization techniques of Particle Swarm Optimization (PSO) and Firefly Algorithm (FA) is used to obtain the optimal PID control parameters. To represent the model of the system, system identification with ARX model structure is developed. The results are determined by analysis the step response characteristic of the system. It was observed that the performances of PID controller with PSO optimized parameters perform well in position tracking of the pneumatic actuator system.

关键词： Tuning Zinc Optimization Signal processing algorithms PD control Pneumatic actuators

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A Data-Driven Approach for Fault Diagnosis in Gearbox of Wind Energy Conversion System

A Data-Driven Approach for Fault Diagnosis in Gearbox of Win...

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Conference on control and Fault-Tolerant Systems

作者： Minjia Kruger Steven X. Ding Adel Haghani Peter Engel Torsten Jeinsch Institute for Automatic Control and Complex System Faculty of Engineering University Duisburg-Essen PC-Soft GmbH Institute of Automation University Rostock

ISBN: (纸本)9781479928569

With a fast growing of wind power installed capacity, an efficient monitoring system for wind energy conversion system (WEC) is required to ensure operational reliability, high availability of energy production and at the same time reduce operating and maintenance costs. In this paper, an efficient, scaleable data-driven on-line WEC monitoring method is introduced, which consists of three parts: 1) off-line training process 2) on-line monitoring phase 3) on-line diagnosis phase. The performance and effectiveness of this method for the detection of process abnormalities are demonstrated using the data obtained from different wind turbines in a wind farm.

关键词： Wind energy conversion system Fault diagnosis Data-driven

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