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IEEE Symposium on Computational Intelligence in control and Automation (CICA)

作者： Zhang, Ming Christopher Newport Univ Dept Phys Comp Sci & Engn Newport News VA 23606 USA

ISBN: (纸本)9781479945306

New open box and nonlinear model of Ultra High Frequency Polynomial and Sine Artificial Higher Order Neural Network (UPS-HONN) is presented in this paper. A new learning algorithm for UPS-HONN is also developed from this study. A control signal generating system, UPS-HONN Simulator, is built based on the UPS-HONN models. Test results show that, to generate any nonlinear control signal, average error of UPS-HONN models is under 1e-6.

关键词： control signal control signal generator HONN UPS-HONN

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A compact self-powered inductor-less piezoelectric energy harvesting circuit using gyrator

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SMART MATERIALS AND STRUCTURES 2024年第6期33卷 065013-065013页

作者： Younas, Osama Li, Ping Wen, Yumei Shanghai Jiao Tong Univ Instrument Sci & Engn Dept Shanghai Peoples R China

In traditional low-frequency energy harvesting circuits, a large matched inductor with a large size is unavoidable. To reduce the size of the circuit, this paper proposes a compact self-powered inductor-less high-efficiency piezoelectric energy harvesting circuit using a low-power-consumption gyrator. A self-powered floating gyrator inductor is used in place of an inductor in the proposed circuit, and the required phasor response is acquired by using its voltage-current (V-I) relationship. The proposed circuit offers easy adjustability and performance benefits in small integrated circuits packages. The proposed circuit can be cost-effective and provide reduced area advantages in autonomous self-powered Internet-of-Things and wireless sensor nodes applications. Regarding harvested energy, the proposed circuit with a storage capacitor of 0.24 F can obtain 320% improved performance than standard energy harvesting along with the lowest power consumption of 0.25 mu W in self-powered operation. The proposed technique can also be applied to similar piezoelectric energy harvesting strategies with large inductors.

关键词： piezoelectric energy harvesting control signal generator gyrator

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A Network-Friendly Implementation Architecture for Observer-Based Intermittent controllers

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IFAC-PapersOnLine 2018年第23期51卷 254-258页

作者： Braksmayer, Maor Mirkin, Leonid Faculty of Mechanical Eng. Technion—IIT Haifa32000 Israel

This note studies implementation issues arising in observer-based controllers acting under intermittent information exchange between their sensor-and actuator-side parts. Existing implementation schemes assume that a copy of the control signal generator runs on the sensor side. This might render the controller sensitive to some network-induced problems, like packet losses. We propose an alternative architecture, in which the sensor-side part does not need to know the actual control signal. As a result, stabilizing and optimal controllers can be successfully implemented over unreliable networks. © 2018

关键词： controllers Network architecture control signal generator Implementation architecture Implementation scheme Information exchanges Intermittent samplings Networked controls Observer based controllers Sampled data control

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Light Load Efficiency Improvement in High Frequency DC-DC Buck Converter Using Dynamic Width Segmentation of Power MOSFET

Light Load Efficiency Improvement in High Frequency DC-DC Bu...

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27th International Conference on VLSI Design / 13th International Conference on Embedded Systems (VLSID)

作者： Mary, Metilda Sagaya N. J. Maity, Ashis Patra, Amit IIT Kharagpur Elect Engn Kharagpur W Bengal India IIT Kharagpur Adv Technol Dev Ctr Kharagpur W Bengal India

ISBN: (纸本)9781479925124

This work presents a dynamic width segmentation scheme of the power MOSFETs to improve the light load efficiency in high frequency DC-DC converters. The proposed scheme first senses the load current and decides the maximum number of power MOSFET segments to be turned ON. In order to sense the load current accurately over a wide range, an improved current sensing method is also suggested. The proposed scheme is designed and simulated in a 0.5 mu m Bi-CMOS technology. To validate its effectiveness, an integrated system is designed using a monolithic voltage mode, synchronous DC-DC buck converter topology switching at 20 MHz. Only the passive components (L=330 nH and C= 2.2 mu F) are the off-chip components. The input voltage Vin lies in the range of 2.7 V-5.5 V which is quite suitable for Li-ion or Ni-Cd battery operated applications. The output voltage is targeted at 1.2 V and maximum load current specification is 600 mA. The whole power MOSFET is segmented into 16 equal parts and a signal conditioning loop decides the number of active segments dynamically based on the load current. Simulation result shows that at the lightest load of 10 mA, the power efficiency of the converter with and without the dynamic width segmentation scheme is 40% and 19.5% respectively. This shows an efficiency improvement of nearly 103% at the lightest load of 10 mA.

关键词： Dynamic width segmentation input current sensing signal conditioning control signal generator

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Designing Area-Efficient controllers for Multi-Cycle Transient Fault Tolerant Systems 20

Designing Area-Efficient Controllers for Multi-Cycle Transie...

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20th IEEE European Test Symposium (ETS)

作者： Iwagaki, Tsuyoshi Ishimori, Yutaro Ichihara, Hideyuki Inoue, Tomoo Hiroshima City Univ Grad Sch Informat Sci Asa Minami Hiroshima 7313194 Japan

ISBN: (纸本)9781479976034

This paper discusses a controller design in high-level synthesis to tolerate multi-cycle transient faults under the situation where its datapath has the ability of tolerating such faults. It focuses especially on the control signal generator (or output logic) that is a component of the controller feeding control signals to the datapath in a controller-datapath system, and presents a method of controller synthesis that leverages the error correction/detection ability of the datapath. Experimental results show that the proposed method can synthesize fault tolerant controllers with small area overhead compared with the conventional method based on triple modular redundancy (TMR).

关键词： transient fault control signal generator controllers controller design high level synthesis control signal Fault tolerance triple modular redundancy Formal logic

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Entropy-Based Exposure Time Setting for an Adaptive Multi-Exposure Image Fusion

Entropy-Based Exposure Time Setting for an Adaptive Multi-Ex...

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International Conference on Industrial and Information Systems, ICIIS

作者： Shinsuke Yasukawa Tomohiro Nasuno Kazuo Ishii Graduate School of Life Science and Systems Engineering Kyushu Institute of Technology Kitakyushu-Shi Wakamatsu-Ku Fukuoka -Ken Japan

ISBN: (数字)9781728137063

ISBN: (纸本)9781728137070

We investigated the setting method of exposure times for an adaptive multi-exposure image fusion. Because the range of luminance in the natural environment is wide and objects in captured image have inherent optical properties, the vision system need to adapt to the input light. The proposed system comprises an image sensor module and a field-programmable gate array (FPGA) which is composed of control signal generator for an image sensor, HDR (High-dynamic-range) image generator/evaluator. In this study, we employed and evaluated maximum entropy of HDR image as the exposure time setting method.

关键词： Adaptation Field Sensing High Dynamic Range Robot vision Edge computing robot vision exposure time set method multiple exposure HIGH DYNAMIC RANGE image fusion control signal generator Sensors (image) Field programmable gate arrays Maximum entropy GATA3 gene hot dry rocks

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