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International Conference on Fractional Differentiation and Its Applications (ICFDA)

作者： Zhuo Li Tiebiao Zhao Yangquan Chen MESA (Mechatronics Embedded Systems and Automation) Lab University of California Merced CA USA

ISBN: (纸本)9781479925926

This paper introduces a low cost temperature control experimental platform for hardware-in-the-loop simulations. It is developed based on the thermal electronic elements to emulate a temperature control loop in a chemical process. The novel aspect lies in the discovery and discussion of some interesting characteristics of this hardware setup through experiments, which includes the fractional order inverse response behavior, the “open loop linear while closed loop nonlinear” behavior and so forth. These phenomena provide more physical evidences for revealing the value of fractional calculus.

关键词： Heating Mathematical model Heat pumps Heat transfer MATlab

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PROCEDURES FOR PROCESSING THERMAL IMAGES USING LOW-COST MICROBOLOMETER CAMERAS FOR SMALL UNMANNED AERIAL systems

PROCEDURES FOR PROCESSING THERMAL IMAGES USING LOW-COST MICR...

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IEEE International Geoscience and Remote Sensing Symposium

作者： Austin M. Jensen Mac McKee YangQuan Chen Utah Water Research Laboratory Utah State University Mechatronics Embedded Systems and Automation (MESA) Lab University of California Merced

Remote sensing data using thermal-infrared (TIR) cameras can be very helpful for many applications including agriculture and thermal refugia for fish habitat. Small unmanned aerial vehicles (UAS) can be efficient platforms for providing high-resolution thermal imagery at a low-cost;however most thermal cameras used for remote sensing are cooled systems and can be very large, expensive, and consume large amounts of power. Because of these constraints they are not easily integrated with small UAS. For surveillance and military applications, microbolometer thermal cameras are widely used on UAS because they are smaller, less expensive and consume less power than cooled thermal cameras. However, microbolometer thermal cameras are not as sensitive and accurate as cooled systems. Also, many are not calibrated and only measure relative temperature. This presents a challenge when microbolometer thermal cameras are used for scientific and ecological applications: absolute surface temperature is necessary for these applications. This paper presents procedures that can be followed to convert the raw images from a microbolometer camera to accurately represent surface temperature (without compensating for emissivity). The steps needed for this include preparing the images for orthoretification, geometric calibration, orthorectification, and correction for external disturbances.

关键词： Cameras Temperature sensors Remote sensing Calibration Surveillance Temperature measurement Land surface temperature

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Identification of Linear Fractional Order systems Using the Relay Feedback Approach

Identification of Linear Fractional Order Systems Using the ...

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American Control Conference

作者： Zhuo Li YangQuan Chen Mechatronics Embedded Systems and Automation (MESA) Lab School of Engineering University of California Merced 5200 North Lake Road Merced CA 95343 USA

ISBN: (纸本)9781479932757

The relay feedback approach has been used to identify integer order models. Fractional order systems are usually identified by many other approaches. Yet, using the relay feedback to identify a fractional order system has not been reported. This paper investigates this interesting and useful topic by means of extending the relay feedback identification method from integer order systems to a class of linear fractional order systems. Equations are derived for model parameter calculation. Simulation and experiments are presented to verify the feasibility and effectiveness of the proposed approach.

关键词： Instruction repertory Relay feedback fractional order

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Fractional-order modeling of a permanent magnet synchronous motor velocity servo system: Method and experimental study

Fractional-order modeling of a permanent magnet synchronous ...

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International Conference on Fractional Differentiation and Its Applications (ICFDA)

作者： Wei Yu Ying Luo Youguo Pi YangQuan Chen Department of Automation Science and Engineering South China University of Technology Guangzhou P. R. China Mechatronics Embedded Systems and Automation (MESA) Lab University of California Merced Merced CA USA

ISBN: (纸本)9781479925926

This paper presents fractional-order modeling of a permanent magnet synchronous motor (PMSM) velocity servo system in frequency domain. The traditional integer order model of the PMSM velocity system is extended to fractional order one for an improved modeling precision. An enhancement of the classic Levy identification method with weights is applied to identify the parameters of the proposed fractional order model. In a real-time PMSM velocity servo plant, the fractional order model is identified according to the experimental tests using the presented algorithm.

关键词： Mathematical model Servomotors Frequency-domain analysis Equations Synchronous motors Torque Transfer functions

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Survey of Thermal Infrared Remote Sensing for Unmanned Aerial systems

Survey of Thermal Infrared Remote Sensing for Unmanned Aeria...

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International Conference on Unmanned Aircraft systems

作者： Brandon Stark Brendan Smith YangQuan Chen Mechatronics Embedded Systems and Automation Lab School of Engineering University of California

ISBN: (纸本)9781479923779

As Unmanned Aerial System (UAS) technology matures, the list of potential civilian applications continues to grow substantially. Currently, the majority of applications are centered around providing optical imagery, either in real-time video or high resolution mapping. But as more sophisticated applications are desired, the limitations of simple imagery are becoming more evident, especially for precision agricultural applications. However, recent advancements in UAS based precision agriculture have demonstrated the effectiveness of including thermal infrared (TIR) cameras. In many situations, decision support indicators are evident in the TIR spectrum, whereas they are undetectable in the visible light and near-infrared spectrum. In this paper, a survey of some of the applications under development utilizing TIR imagery is presented along with implementation strategies to provide guidance for researchers wishing to add TIR imagery into their applications.

关键词： ANTENNA SYSTEM infrared remote sensing TOTAL INDICATED RUNOUT Thermal Infrared NEAR-INFRARED CORRELATION SPECTROSCOPY UNMANNED real-time video Imagery (Psychotherapy) images precision agriculture High definition

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Robust stability and stabilization of uncertain fractional-order descriptor nonlinear system

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IFAC Proceedings Volumes 2014年第3期47卷 6080-6085页

作者： Chun Yin Yang Quan Chen Shou-ming Zhong School of Mathematics Science University of Electronic Science and Technology of China Chengdu 611731 P. R. China Mechatronics Embedded Systems and Automation (MESA) Lab School of Engineering University of California Merced 5200 North Lake Road Merced CA 95343 USA

This paper considers the robust stability for uncertain fractional-order (FO) descriptor nonlinear systems. A key analysis technique is enabled by proposed a fundamental boundedness lemma, for the first time. It is used for rigorous robust stability analysis of FO systems, especially for Mittag-Leffler stability analysis of FO nonlinear systems. More importantly, how to obtain a more accurate bound is analyzed to reduce conservative. An FO proportional-derivative controller is utilized to normalize the descriptor system. Furthermore, a criterion for stability of the normalized FO nonlinear system is provided by utilizing linear matrix inequality (LMI). Finally, two illustrative examples show the effectiveness of the proposed stability notion.

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Fractional-order power rate type reaching law for sliding mode control of uncertain nonlinear system

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IFAC Proceedings Volumes 2014年第3期47卷 5369-5374页

作者： Chun Yin YangQuan Chen Shou-ming Zhong School of Mathematics Science University of Electronic Science and Technology of China Chengdu 611731 P. R. China Mechatronics Embedded Systems and Automation (MESA) Lab School of Engineering University of California Merced 5200 North Lake Road Merced CA 95343 USA

This paper develops a fractional-order (FO) power rate type reaching law for sliding mode control (SMC) of nonlinear integer order systems with disturbance and uncertainty. The proposed FO power rate type reaching law, including an FO derivative function, is proven to ensure that the state trajectories achieve to the switching surface in a finite time. Most importantly, the calculation formula of the reaching time under the FO reaching law is provided, for the first time. The comparisons between the FO and IO reaching laws reveal the potential advantages of the FO reaching law. Furthermore, the criterion for stability of the sliding mode dynamics is provided by solving linear matrix inequality (LMI). Finally, simulation and experimental examples illustrate the effectiveness and advantage of the proposed control method.

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Application of Fractional Order Current Controller in Three Phase Grid-Connected PV systems

Application of Fractional Order Current Controller in Three ...

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American Control Conference

作者： Hadi Malek Sara Dadras YangQuan Chen Electrical and Computer Engineering Department Utah State University Logan Utah USA Mechatronics Embedded Systems and Automation (MESA) Lab MEAM/EECS School of Engineering University of California Merced Merced CA 95343 USA

ISBN: (纸本)9781479932757

The main purpose of this work is to develop a closed-loop fractional order control system for a three phase grid-connected photo-voltaic (PV) system. A two level three phase inverter with an inductive filter is chosen as a benchmark, due to the fact that this topology is more popular and simple in a grid connected PV system. A fractional order PI controller has been tuned for current control loop of the considered system and the system responses are compared with the responses of the closed loop system with integer order controller. Simulation results show the improvement in the performance of grid-connected PV system by using the fractional order controller.

关键词： THREE-PHASE fractional order current controller PI control control ring system response Closed loop systems BENCHMARKS

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Plasma Impedance Matching Using Fractional Order Sliding Mode Based Extremum Seeking Control

Plasma Impedance Matching Using Fractional Order Sliding Mod...

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IEEE Annual Conference on Decision and Control

作者： Zhuo Li Chun Yin YangQuan Chen Mechatronics Embedded Systems and Automation (MESA) Lab School of Engineering University of California Merced 5200 North Lake Road Merced CA 95343 USA School of Automation Engineering University of Electronic Science and Technology of China Chengdu 611731 P. R. China

ISBN: (纸本)9781467360890

The extremum seeking control (ESC) is a model free approach for solving the online optimization control problems. In this paper, a general purpose ESC based on the fractional order sliding mode is presented with a suitable application on the plasma impedance matching. The principle and stability of the proposed control law are illustrated mathematically. Simulation is provided to show the effectiveness, necessity and worthiness of using this advanced control strategy. Remarks are given with regard to the implementation and potential research opportunities.

关键词： impedance matching extremum values control law fractional order Sliding mode Research Opportunities instruction mode Optimal control

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A guide for selecting small unmanned aerial systems for research-centric applications

A guide for selecting small unmanned aerial systems for rese...

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2nd IFAC Workshop on Research, Education and Development of Unmanned Aerial systems, RED-UAS 2013

作者： Stark, Brandon Smith, Brendan Chen, Yang Quan Mechatronics Embedded Systems and Automation Lab School of Engineering University of California Merced Merced CA United States

ISBN: (纸本)9783902823571

Unmanned Aerial systems (UASs) have been utilized in a wide variety of researchcentric applications, especially within the last several years. However, the majority of these applications have utilized specialized equipment developed by experts in UAS technology. As the impact of using UASs for research applications become more widely known, the demand for their use will grow. Currently, the field of commercially available systems is growing larger every day, but many end-user researchers do not know how to utilize these systems for their needs. In this paper, an evaluation of many commercially available systems and typical payload systems is presented to help end-user researchers understand how to select the system that best suits their needs. © IFAC.

关键词： Unmanned aerial vehicles (UAV)

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