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2022 International Conference on Intelligent Transportation, Big data and Smart City, ICITBS 2022

作者： Zhang, Yi Gong, Yu Zou, Xiaomao Fujian Key Laboratory of Advanced Design and Manufacture for Coach Xiamen361024 China Fujian Collaborative Innovation Center for R&d of Coach and Special Vehicle Xiamen361024 China

ISBN: (纸本)9781665497213

According to the particularity of the rhombic car chassis layout, two degrees of freedom (2-dOF) handling model was established based on the front/rear wheel linkage steering. The stability factor was deduced based on the theory analysis, and the condition satisfied to under steering was determined. The handling and stability of the car was analyzed, mainly including the steady state and transient response based on the front wheel angle step input and the yaw-rate frequency response characteristics, and so on, and the effect to the handling and stability which was caused by the vibration of the car parameters was analyzed. The analysis results will be useful to select and adjust the car parameters of the rhombic car, and will have better reference significance to the engineering. © 2022 IEEE.

关键词： Vibration analysis

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Modeling method for power distribution network in the micro-system packaging 13

Modeling method for power distribution network in the micro-...

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13th Asia-Pacific International Symposium on Electromagnetic Compatibility and Technical Exhibition, APEMC 2022

作者： Li, Wei Wei, Tao Wang, Jun Chu, Xiuqin Wang, Yanling Xidian University Key Laboratory of High-Speed Circuit Design and EMC Ministry of Education Xi'an China R&d Innovation Center xi'An Microelectronics Technology Institute Xi'an China

ISBN: (数字)9781665416719

ISBN: (纸本)9781665416719

The rapid development of through-silicon via (TSV) technology provides technical support for the realization of the micro-system packaging. The power distribution networks (PdN) at different layers are connected by TSV. The small size of the TSV bring great impact to the PdN due to its large parasitic inductance. Aimed at this point, the modeling method for the multilayered PdN connected by TSV is proposed. The TSV array and power/ground plane pair are first built, then the cascaded model is built to model the multilayered PdN. To verify the accuracy of the circuit model, its result is compared with that of HFSS. The comparison results show that: the error is less than 10% within a certain frequency range of interest. © 2022 IEEE.

关键词： Three dimensional integrated circuits

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design of Fully differential Amplification Circuit and Analysis of related Parameters Based on Feedback Mechanism

Design of Fully Differential Amplification Circuit and Analy...

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2023 International Conference on Applied Mathematics, Modelling and Statistics Application, AMMSA 2023

作者： Zhu, Liyong Wang, Hangyan School of Mechanical and Automotive Engineering Xiamen University of Technology Fujian Xiamen361024 China Fujian Key Laboratory of Advanced Design and Manufacture for Bus Coach Fujian Xiamen361024 China Fujian Collaborative Innovation Center for R&D of Coach and Special Vehicle Fujian Xiamen361024 China

In this paper, a new feedback-based mismatch reduction method is proposed for CMOS process-based differential circuit design. The method combines an active feedback circuit and a differential amplifier circuit to reduce the error caused by device mismatch by utilizing the feedback signal, which is calculated to achieve higher circuit performance and accuracy. Meanwhile, based on the actual circuit simulation in Candence, it is concluded that under the conditions of input voltage of 5V, operating current of 100mA, and the same transistor parameters, the circuit with the introduction of the feedback mechanism is able to achieve a maximum gain of about 10dB and a lower common mode rejection ratio at the same frequency compared with the circuit without feedback. © 2023 Institute of Physics Publishing. All rights reserved.

关键词： differential amplifiers

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The study on the effects of the height of the core’s window on the leakage reactance of transformers using finite element analysis

The study on the effects of the height of the core’s window...

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Artificial Intelligence of Things (ICAIoT), International Conference on

作者： Kamran dawood Semih Tursun Ismet Kaymaz Senior R&D Engineer Astor Enerji Ankara Turkey Transformer Design Manager Astor Enerji Ankara Turkey Transformer Design Engineer Astor Enerji Ankara Turkey

The short-circuit transformer’s behaviour can be easily predicted from its leakage reactance. The relationship between the height of the core window and leakage reactance of the transformers according to almost all of the analytical methods is assumed to be constant under different heights of the core window. This approach is not significantly accurate during severe cases such as those has small differences between the core height and winding height. Finite element analysis is computer software which can help manufacturers and engineers to speed up the process of optimising electrical machines. In this work, a finite element method is used to see the effect of the window height on the leakage reactance of the transformer under the different heights of the window of the core. The three-dimensional methods are used to evaluate the leakage reactance of the transformer for different heights of the core window. The results show that the transformer’s leakage reactance widely varies during the change in the height of the core window for the same geometry of the windings and electrical parameters of the transformer. Hence using analytical methods could result in inaccurate results. Moreover, considering the same ratio between the window height and windings height is no longer valid for all of the transformers.

关键词： Geometry Windings Transformer cores Transformers Software Finite element analysis Internet of Things

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High-Precision Temperature Control design and On-Orbit Verification of Star Sensor

High-Precision Temperature Control Design and On-Orbit Verif...

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System Simulation Technology and its Application (CCSSTA), IEEE China Conference on

作者： Cuilin Wang risi Sun Maoxian Yin Zipeng Yang Jinlai Gong Haotian Wu dept. system design Shenzhen Aerospace Dongfanghong Satellite Ltd Shenzhen China dept. R&D Foshan China Academy of Space Technology Innovation Center Foshan China

ISBN: (数字)9798350366600

ISBN: (纸本)9798350366617

Star sensor is a crucial device for spacecraft attitude determination, and its thermal stability directly influences the precision of star sensor measurements. In this study, with the constraint of limited thermal control resources, a comprehensive thermal design task analysis was conducted considering various aspects such as the star sensor body, operational orbit, spacecraft attitude, sensor positioning, and installation boundaries. This analysis was tailored to meet the high-precision temperature control requirements $\left(20 \pm 1^{\circ} \mathrm{C}\right)$ of a high-resolution remote sensing satellite. A novel star sensor thermal control design and analysis methodology, based on transient duty cycle single-stage temperature control, was proposed. The efficacy of this thermal design was subsequently validated through simulation analyses and on-orbit verification. The results indicated that the on-orbit temperature of the star sensor was consistently stable, with fluctuations not exceeding $0.2^{\circ} \mathrm{C}$, thus satisfying the $\pm 1^{\circ} \mathrm{C}$ requirement. This confirmed the rationality and correctness of the thermal design analysis approach. This research offers a valuable reference for the thermal control design of equipment operating within sunsynchronous orbits, particularly those with limited thermal control resources and stringent high-precision temperature control demands. ()

关键词： Temperature sensors Space vehicles Control design Orbits (stellar) Stars Thermal conductivity Thermal analysis Temperature control Transient analysis Thermal stability

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Portable gait analysis sensor model for Parkinson's disease

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Materials Today: Proceedings 2022年 63卷 653-662页

作者： Piromalis, dimitrios Kounelis, Marios Kolovos, dimitrios P. Kokkotis, Christos Tsatalas, Themistoklis Bellis, George Tsaopoulos, dimitrios Giakas, Giannis Chronakis, Antonis Koutsouraki, Eleni Tsotsolas, Nikos randhawa, Princy Patel, Akshet Industrial Design and Production Engineering University of West Attica Egaleo Greece R&D Dept Pan Antistixis SA Industrial Informatics Engineer INNOESYS P.C. Egaleo Greece Biomechanical Solutions Karditsa Greece Department of Physical Education & Sport Science University of Thessaly Trikala Greece Institute for Bioeconomy & Agri-Technology Center for Research and Technology Hellas Volos Greece R&D Dept E. Koutsouraki & SIA E.E - Knowledge Brokers Athens Greece DigiT-DSS Lab University of West Attica Egaleo Greece Department of Mechatronics Engineering Manipal University Jaipur Jaipur India

As part of a research project, a small gait analysis device is being developed that will be used outside of home by the patients themselves. Its main purpose will be to record accurate gait measurements in patients with Parkinson's disease and proceed with in-depth analysis of the gait characteristics. A key feature of the device will be its small size, which creates specific requirements in terms of device consumption restrictions due to the small size of the battery and the need for autonomous operation for more than ten hours. This research work describes, on the one hand, the firmware of the device with an emphasis on the functions that will be implemented;and, on the other, the device software which will support the process that will be adopted for reading and processing data from the devices placed on patients' feet to record the gait characteristics of patients on a continuous basis. Using these computational approaches, we developed and carried out an experiment with a 1.60 m tall experimental female subject. We strapped a device to the subject's right ankle and instructed her to take five steps with her right foot, turn 180 degrees, and repeat with the same foot. © 2022

关键词： Firmware

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Study of Fuzzy Control for Pitch and Yaw Angles of Two-degrees-of-Freedom Helicopter System

Study of Fuzzy Control for Pitch and Yaw Angles of Two-Degre...

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IEEE International Conference on engineering Technologies and Applied Sciences (ICETAS)

作者： Mehmet Çakır Mohammad Javad Fotuhi Zied Ben Hazem Department of Avionic Engineering Institute of Science and Technology Yildiz Technical University Istanbul Türkiye R&D Design and Innovation Engineer KeramikMakina Sanayi veTicaret A.S. Gebze Türkiye Department of Mechatronics Engineering College of Engineering University of Technology Bahrain Salmabad Kingdom of Bahrain

In this paper, PId (Proportional-Integral-derivative), cascade, and fuzzy logic controller (FLC) controllers are developed for the Pitch and Yaw angles of a two-degrees-of-freedom helicopter system (2-dOF HS). Two different FLCs are used for Pitch and yaw angles in order to provide the output speed. A Mamdani-type FLC is implemented for the 2-dOF HS. The inputs of FLC are position error and rate of errors. The FLC is developed to give accurate results in terms of time domain specifications compared to PId and cascade controllers. All controllers have been established in MATLAB/ SIMULINK to test their control performance. According to the obtained simulation results, the FLC returns accurate control results, and robustness to eliminate the external disturbances.

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Smart Agriculture: Leveraging IoT and Machine Learning in Wireless Sensor Networks for Precision Farming

Smart Agriculture: Leveraging IoT and Machine Learning in Wi...

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2024 International Conference on Innovative Computing, Intelligent Communication and Smart Electrical Systems, ICSES 2024

作者： Sheela, M. Sahaya Leonid, T. Thomas Aravindhraj, N. ravi, S. Giri, Pallavi Amer, Ayman Vel Tech Rangarajan Dr.Sagunthala R&d Institute of Science and Technology Department of Ece Chennai India Kcg College of Technology Department of Cse Chennai India Kongu Engineering College Department of Cse Erode India Department of Vlsi Microelectronics Chennai India Laxminarayan Innovation Technological University Department of Civil Engineering Nagpur India Zarqa University Department of Energy Engineer Zarqa Jordan College of Engineering University of Business and Technology Jeddah21448 Saudi Arabia

ISBN: (纸本)9798331543617

This research explores the challenge of incorporating IoT with Machine Learning (ML) applications to Precision Agriculture, particularly the use of wireless sensors for irrigation control. Information from sensors that monitor key parameters including temperature, humidity, moisture, and water levels are used to forecast water requirements and control pumps. Support vector machine (SVM), decision tree (dT), random Forest (rF) and Naïve Bayes (NB) techniques are adopted for the analysis to find out their accuracy levels. It is observed from all the above-performed models that among all, the SVM has the maximum prediction rate of the given dataset and is slightly outperformed by only the dT and rF. The confusion matrix which points to the misclassification patterns of each model gives an insight into identifying the best ML approach for use. The convergence of IoT and ML guarantees flexibility and responsiveness when controlling and designing agricultural systems. It is this approach that has the potential to enhance water resources management as well as address issues precipitated by climate change and growing worldwide food demand. © 2024 IEEE.

关键词： Smart agriculture

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design of Auto Encoder based on dNN for MIMO Systems

Design of Auto Encoder based on DNN for MIMO Systems

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Electrical, Electronics, Information and Communication Technologies (ICEEICT), International Conference on

作者： T. Kavitha J. Jaswanth M. Manoj Kumar Supraja C N. Ashokkumar Narayana reddy Yatm Vel Tech Rangarajann Dr.Sagunthala R&D Institute of Science and Technology Chennai Avadi Mohan Babu University (Erstwhile Sree Vidyanikethan Engineering College) Tirupati India Senio Circuit Design and Verification Engineer Micron Technologies Hyderabad Telangana

ISBN: (数字)9798350369083

ISBN: (纸本)9798350369090

In recent years, multiple-input multiple-output (MIMO) systems have gained significant attention in wireless communication due to their ability to enhance spectral efficiency and reliability. designing efficient signal processing techniques for MIMO systems is crucial for achieving high data rates and reliable communication. In this paper, we propose a novel approach utilizing autoencoder-based deep neural networks (dNNs) for signal processing in MIMO systems. The autoencoder is a type of neural network that learns to encode input data into a lower- dimensional representation and then decode it back to its original form. By leveraging the inherent dimensionality reduction capabilities of autoencoders, we aim to efficiently capture the spatial characteristics of MIMO channels and mitigate the effects of channel impairments. First, we present the architecture of the proposed autoencoder-based dNN tailored for MIMO systems. The input to the network consists of received signals from multiple antennas, and the output is the estimated transmitted symbols. We design the network layers to perform feature extraction, channel estimation, and symbol detection jointly. Furthermore, we investigate the training methodology for the proposed dNN. We employ a combination of supervised learning with labeled data and unsupervised learning to exploit the abundance of unlabeled data typically available in MIMO systems. We discuss the challenges associated with training deep networks for MIMO channels, including data preprocessing, network initialization, and optimization techniques. To evaluate the performance of the proposed approach, extensive simulations are conducted using realistic channel models and various system configurations. We compare the proposed autoencoder-based dNN with conventional MIMO detection techniques, such as maximum likelihood detection and linear precoding. Performance metrics such as bit error rate (BEr) and spectral efficiency are used to assess the effective

关键词： Wireless communication Training dimensionality reduction deep learning Spectral efficiency Symbols Channel estimation Signal processing MIMO communication Signal to noise ratio

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Study of Complex Servo Gripper for Industrial Applications

Study of Complex Servo Gripper for Industrial Applications

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IEEE International Conference on engineering Technologies and Applied Sciences (ICETAS)

作者： Mohammad Javad Fotuhi Fatih Özbay Zied Ben Hazem R&D Design and Innovation Engineer KeramikMakina Sanayi veTicaret A.S. Gebze Türkiye Department of Mechanical Engineering Institute of Science and Technology Yıldız Technical University Istanbul Türkiye Department of Mechatronics Engineering College of Engineering University of Technology Bahrain Salmabad Kingdom of Bahrain

The objective of this work is to study the performance of an industrial complex servo gripper mechanism (ICSGM) in terms of position and speed. This aim is to design and develop an ICSGM that will have the potential to reach a high number of demands in the automation and robotic industries. In the palletizing industry, the design and control of the robotic grippers are the essential part of a system. depending on the application, different types of holders and movements may be required to pick and place the products. This servo gripper includes a combination of angular mechanism and parallel mechanism, this gripper system that allows linear and angular motions for pick and place operations is investigated for design and control purposes. The drive system of the gripper allows the controller to move the system both angularly and linearly. The performance of the ICSGM mechanism is based on comparing its position error and response time with the parallel mechanism and angular mechanism. The position efficiency of these ICSGM is calculated from the position root mean square error (PrMSE). It is the difference of errors between the two measured position signals (input signal from the incremental encoder and output signal from the linear encoder). In this paper, the Force-PId (Proportional-Integral-derivative) controller is developed in PLC with Siemens SCL programming language. The Controller input is the position error and error rate. In addition, system analysis by inventor software design is included in the study. In the experimental setup, an asynchronous motor and 2048 pulse incremental encoders have been used. Finally, the positioning efficiency of these ICSGM is examined and compared under different working plan circumstances.

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