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检索条件"任意字段=2021 4th International Conference on Advanced Algorithms and Control Engineering, ICAACE 2021"

共 251 条记录，以下是51-60 订阅

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Research on control strategy based vehicle-network coupling instability suppression measures 4

Research on control strategy based vehicle-network coupling ...

引用

4th international conference on advanced Electronic Materials, Computers and Software engineering, AEMCSE 2021

作者： Han, Wei Miao, Yifei CRRC CHANGCHUN RAILWAY VEHICLES CO. LTD. Changchun China Beijing Jiaotong University School of Electrical Engineering Beijing Engineering Research Center of Electric Rail Transportation Beijing China

ISBN: (纸本)9781665415965

In recent years, more and more attention has been paid to the safe and stable operation of electrified railway, especially to the vehicle-network coupling stability, which focuses on the phenomena of high frequency resonance (HFR) and low frequency oscillation (LFO), which has become the research hotspot. Firstly, this paper studies the impedance model of the traction network and the train power system, and proposes the AF-RCS impedance model of the vehicle-network. Based on this model, from the perspective of grid-side converter control strategy, AOC inhibition measures are proposed to solve the instability of vehicle-network coupling caused by insufficient system damping. Furthermore, VCT inhibition measures were proposed to quickly reduce the damage of HFR to the system. Finally, the VCT-AOC comprehensive suppression strategy was proposed, which improved the damping ratio and enhanced the stability of the system while rapidly protecting the system. the effectiveness of the method is verified by simulation and experiment. © 2021 IEEE.

关键词： Damping

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Helmet Wearing Detection Based on YOLOv4-MT 4

Helmet Wearing Detection Based on YOLOv4-MT

引用

4th international conference on Robotics, control and Automation engineering (RCAE) / 4th international conference on advanced Mechanical and Electrical engineering (AMEE)

作者： Liu, Jie Liu, Lizhi Wuhan Inst Technol Hubei Key Lab Intelligent Robot Wuhan Peoples R China

ISBN: (纸本)9781665427302

Current networks based on methods such as YOLO, SSD and R-CNN are more complex and large, making it difficult to use on embedded devices without high-performance Gpu support. Aiming at the application of the model in embedded devices, an improved YOLOv4-MT helmet wearing detection model is proposed to keep the detection speed and accuracy basically unchanged while reducing the model volume. YOLOv4-MT combines the advantages of MobileNet and YOLOv4, and uses K-means algorithm to cluster the prior box to improve the network output scale. the backbone module of YOLOv4 is replaced by the deep separable convolution module of MobileNet. the head part of YOLOv4 is retained and improved, and a new residual module is built in the output part. the CIOU loss function is used to evaluate the loss function. the pre-training model is loaded, and the freezing training is used to freeze part of the weights and train the network parameters of the latter part. Self-made data set based on construction site background, including a variety of complex construction environment. In order to verify the detection effect and performance of the model, several models are compared in NVIDIA GeForce GTX 1650 experimental environment. the new model YOLOv4-MT improved by 7% compared with YOLOv4-Tiny mAP, and reduced by 7 times compared with YOLOv4 model size. Compared with MobileNet-SSD, the detection speed is 4.6 times higher.

关键词： Helmet YOLOv4 MobileNet-SSD YOLOv4-Tiny YOLOv4-MT

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Recognition Algorithm of Water Meter Dial in Natural Scene Based on YOLOV5s 4

Recognition Algorithm of Water Meter Dial in Natural Scene B...

引用

4th international conference on Robotics, control and Automation engineering (RCAE) / 4th international conference on advanced Mechanical and Electrical engineering (AMEE)

作者： Shen, Jinfei Li, Jianqi Cao, Binfang Li, Wei Huang, Lijuan Xu, Yaqian Jishou Univ Coll Informat Sci & Engn Jishou Peoples R China Jishou Univ Hunan Prov Key Lab Control Technol Distributed El Changde Peoples R China Hunan Univ Arts & Sci Hunan Prov Key Lab Control Technol Distributed El Changde Peoples R China Wuhan Inst Technol Sch Comp Sci & Engn Engn Res Ctr Intelligent Prod Line Equipment Hube Wuhan Peoples R China Hunan Univ Arts & Sci Sch Comp & Elect Engn Changde Peoples R China Xiangtan Univ Sch Automat & Elect Informat Xiangtan Peoples R China

ISBN: (纸本)9781665427302

In order to solve the problems of slow detection speed and low detection accuracy due to the complex conditions of the mechanical water meter dial under natural conditions after the network model is deployed on Android, this paper proposes a water meter dial recognition algorithm based on YOLOV5s. the lightweight convolutional neural network MobileNetV3 replaces the original backbone feature extraction network. the network model of the algorithm in this paper is smaller than YOLOV5s, the detection speed is accelerated while the accuracy is basically unchanged. Experimental results show that the average detection accuracy of the algorithm in this paper is basically unchanged compared to the original YOLOV5s, the model parameters are reduced by about 53.5%. After the network model is deployed on the Android device, the detection speed reaches 12FPS. It shows that the algorithm in this paper can realize real-time detection on Android devices.

关键词： water meter dial recognition Android YOLOV5s MobileNetV3 lightweight

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Seamless Transition Strategy for Micro-grid Inverter based on Improved Droop control Strategy 4

Seamless Transition Strategy for Micro-grid Inverter based o...

引用

4th international conference on Energy, Electrical and Power engineering, CEEPE 2021

作者： Shahab, Muhammad Wang, Shaorong Huazhong University of Science and Technology School of Electrical and Electronics Engineering Wuhan China

ISBN: (纸本)9781665433631

Microgrid is a new way to solve current energy problems, such as environmental pollution and resource shortages, for using renewable energy effectively to improve power supply reliability and flexibility. Microgrid inverter has two working modes, on-grid mode and off-grid mode, and seamless transition between the two modes is the key to ensure continuous uninterrupted power supply. the focus of this paper is mainly to achieve the smooth transition from island mode to grid connected mode, to limit the abrupt and transient changes. To achieve this objective, an improved droop control method has been suggested. Voltage-control method based on droop control is used during both on-grid mode and off-grid mode to avoid the forced transition in traditional control strategies. Simulation results are presented using PLECS to validate the seamless transition between the two modes. © 2021 IEEE.

关键词： Electric inverters

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An Improved Crowbar control Circuit of DFIG during LVRT 4

An Improved Crowbar Control Circuit of DFIG during LVRT

引用

4th IEEE China international Electrical and Energy conference, CIEEC 2021

作者： Li, Jinxin Qiu, Qi Zhan, Meng State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology School of Electrical and Electronic Engineering Hubei China

ISBN: (纸本)9781728171494

In recent decades, the installed capacity of wind power is increased greatly, and doubly fed induction generator (DFIG) occupies a dominant position among wind power generators due to its excellent characteristics. However, how to improve the low voltage ride through (LVRT) success rate of doubly fed induction generator during the grid fault especially unsymmetrical grid fault of great value. Based on an improved crowbar control strategy, this paper designs a new control circuit, optimizes the control process, and improves its control speed. Finally, the simulation of MATLAB/Simulink shows that the rationality of this control circuit. © 2021 IEEE.

关键词： Timing circuits

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Asymmetric software architecture design of High performance control chip applied in industrial control field 4

Asymmetric software architecture design of High performance ...

引用

4th international conference on advanced Electronic Materials, Computers and Software engineering, AEMCSE 2021

作者： Bin, Niu Dejian, Li Lixin, Yang Zhihua, Bai Longlong, He Guang, Zhang Meng, Li Beijing Smart-Chip Microelectronics Technology Co.Ltd Beijing100192 China

ISBN: (纸本)9781665415965

For the scene of high real-time requirement in industrial field, the homogeneous multi-core asymmetric software system architecture is designed. this architecture meets the requirements of real-time and non real-time collaborative processing ability in application scenarios, and realizes multi-core remote management. In FPGA verification stage or production stage, porting remoteproc management structure in a typical operating system (Linux), at the same time, the bare metal software and RTOS porting openamp source project. We customized and developed a multi-core management framework, supporting remoteproc API. Based on the implemented SGI interrupt, rpmsg protocol is implemented with the help of hardware IPC mechanism and shared memory, and cross processor communication between Linux and bare metal software is realized through rpmsg protocol. © 2021 IEEE.

关键词： Linux

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Multistage Feedback control of a PV Supplied Two Phase Interleaved Boost Converter for Grid Interfacing Applications 4

Multistage Feedback Control of a PV Supplied Two Phase Inter...

引用

4th Biennial international conference on Nascent Technologies in engineering, ICNET 2021

作者： Roy, Aishworya Ghosh, Arnab National Institute of Technology Department of Electrical Engineering Odisha Rourkela India

ISBN: (纸本)9781728190617

this work aims to address the concerns that are associated with the interfacing of renewable energy sources such as photovoltaics to the grid. this is often accomplished by utilising a DC-DC Converter and an MPPT Algorithm. However, the irradiance that exists in nature is a continuously varying quantity, and conventional MPPT algorithms function by varying output parameters of the DC-DC Converter, rather than maintaining the output voltage and current at a required reference. In this paper, a multistage control strategy is explored which successfully outputs a regulated voltage as the output even in conditions of varying irradiance. thus, the model elaborated in the research presented here is able to facilitate regulated voltages in PV interfaced grid applications of converters. © 2021 IEEE.

关键词： Boost converter

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Design of Small Unmanned Aerial Vehicle Navigation Algorithm Based on control PID 4

Design of Small Unmanned Aerial Vehicle Navigation Algorithm...

引用

4th IEEE international conference on Information Systems and Computer Aided Education, ICISCAE 2021

作者： Wu, Wenqi Xinjiang University Mechanical Engineering College Xinjiang China

ISBN: (纸本)9781665441247

the purpose of the application of UAV navigation system is to accurately judge the position of UAV in horizontal space and ensure that it can fly according to the expected set course. Although the inertia-satellite (GPS) navigation system design proposed in the past is in line with the development needs of the traditional market, in the new era, as small unmanned aerial vehicles enter the field of vision of researchers, experts begin to carry out a new design of the countermeasures and algorithms of the navigation control system. therefore, this paper analyzes how to design and implement the navigation algorithm of small unmanned aerial vehicles (U AVs) based on expert PID combined with the design method of expert PID navigation control law while understanding the design scheme and basic principles of the existing navigation algorithm of small unmanned aerial vehicles (UAVs). © 2021 IEEE.

关键词： three term control systems

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Loss Minimization control of PMSM Using Gradient Descent Algorithm 4

Loss Minimization Control of PMSM Using Gradient Descent Alg...

引用

4th IEEE China international Electrical and Energy conference, CIEEC 2021

作者： Yang, Hongyi Shen, Qidi Li, Zhaokai Huang, Xiaoyan Zhejiang University Polytechnic Institute Hangzhou China Zhejiang University College of Electrical Engineering Hangzhou China

ISBN: (纸本)9781728171494

In this paper, loss minimization control method (LMC) based on gradient descent algorithms (GDA) is aimed at enhancing the efficiency of permanent magnet synchronous machines (PMSMs) in high-speed operation. this approach reduces the power loss by controlling the magnitude of the torque component of the d-axis current in terms of the gradient of power loss. Besides, this kind of search-based method can avoid the influence of changes in motor parameters on control. Maximum torque per ampere (MTPA) and id = 0 control are also simulated so as to verify the effects of LMC. Compared with these two methods, the simulation results of LMC indicate that this approach could improve the efficiency of the PMSM. © 2021 IEEE.

关键词： Efficiency

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Design of motion control system of handling robot 4

Design of motion control system of handling robot

引用

4th international conference on advanced Electronic Materials, Computers and Software engineering, AEMCSE 2021

作者： Liu, Miaoquan Ai, Changsheng Yang, Tingsong Song, Li Zhou, Tianwen University of Jinan Quancheng College School of Intelligent Engineering Yantai China University of Jinan Department of Mechatronics Jinan China

ISBN: (纸本)9781665415965

Handling robots are very important for improving productivity, reducing work intensity, improving the surrounding environment, and ensuring work safety. Based on the kinematics analysis of a two-degree-of-freedom manipulator based on a slider mechanism, this paper uses an open motion controller as a development platform to carry out hardware design and software development to realize the flexible control of the handling robot, with simple structure and real-time control, open structure, standard programming and rich man-machine interface, etc. which can be widely used in material destacking and palletizing handling. © 2021 IEEE.

关键词： Real time control

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