检索结果-内蒙古大学图书馆

Estimated position correction algorithm of surface-mounted permanent-magnet synchronous motor based on variable gain steepest gradient descent method

引用

ENERGY REPORTS 2023年 9卷 1154-1162页

作者： Wang, Yiming Luo, Lingyan Xu, Qiwei Zhang, Xuefeng Wang, Xiangyi He, Miao Chongqing Univ Sch Elect Engn State Key Lab Power Transmiss Equipment & Syst Sec Chongqing 400044 Peoples R China Guizhou Aerosp Linquan Motor Co Ltd Guiyang 550025 Peoples R China

This paper addresses the position-estimation deviation issue of the sensorless drive method and a new algorithm for estimating position correction of surface-mounted permanent magnet synchronous motor (SPMSM) is proposed. To improve the estimation accuracy of sensorless methods, the estimated position correction algorithm based on variable gain steepest gradient descent position error observer is proposed in this paper. The position error is estimated by the flux observation, and the steepest gradient descent method is used to correct the integration process. In addition, the dynamic and accuracy performance of the position error observer are improved by variable gain cycle iterative optimization. Experimental evaluation validated the effectiveness of the proposed algorithm, and the results show that the proposed method has the characteristics of high position observation accuracy and strong robustness. (c) 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CCBY-NC-ND license (http://***/licenses/by-nc-nd/4.0/).

关键词： Surface mounted permanent magnet synchronous motor (SPMSM) Variable gain steepest gradient descent method Sensorless control Estimated position correction algorithm

来源：评论

学校读者我要写书评

暂无评论

Planning and Tracking of Dynamic Soaring Using Nonlinear Model Predictive control 3rd

Planning and Tracking of Dynamic Soaring Using Nonlinear M...

引用

3rd international conference on Autonomous Unmanned Systems, ICAUS 2023

作者： Wang, Danxiang Xie, Fangfang Ji, Tingwei Lu, Yufeng Zheng, Yao School of Aeronautics and Astronautics Zhejiang University Hangzhou310027 China

ISBN: (纸本)9789819711062

Dynamic soaring is a promising technology that can utilize the wind energy from wind shear layers. In the present study, a planning and tracking framework of dynamic soaring is proposed using nonlinear model predictive control (NMPC). For the planning strategy, a three degrees of freedom point-mass model is established with the air relative axes, and the planning objective contains a energy related term and a thrust penalty term. For the tracking strategy, a six degrees of freedom model is established with the body-fixed axes, and the tracking objective is defined as the distances of the airspeed and the attitude angles between the planning strategy and the tracking strategy. Compared with the traditional control methods, the NMPC can give a better strategy with more energy harvesting and less energy consumption. © Beijing HIWING Scientific and Technological Information Institute 2024.

关键词： Model predictive control

来源：评论

学校读者我要写书评

暂无评论

Development and Analysis of a Versatile Dataset of Speech, Real and Synthesized, of Arabic Learners 3

Development and Analysis of a Versatile Dataset of Speech, R...

引用

3rd international conference on Computing and Information Technology, ICCIT 2023

作者： Alsulaiman, Mansour Algabri, Mohammed Mathkour, Hassan Bencherif, Mohamed A. Muhammad, Ghulam Al-Gahtani, Saad Faisal, Mohammed Mekhtiche, Mohamed Amine Alfakih, Taha King Saud University College of Computer and Information Sciences Computer Engineering Department Riyadh Saudi Arabia AlMaarefa University College of Applied Sciences Computer Science and Information Systems Department Riyadh Saudi Arabia King Saud University College of Computer and Information Sciences Computer Science Department Riyadh Saudi Arabia Riyadh Saudi Arabia King Saud University Arabic Language Institute Saudi Arabia Center of Ai & Robotics Kuwait

ISBN: (纸本)9798350321487

Computer-Aided Pronunciation Training (CAPT) systems are gaining popularity recently due to the advancements in deep neural networks (DNN) and machine learning and the availability of databases of speech of language learners. Unfortunately, research in Arabic CAPT systems suffer from the lack of CAPT datasets compared to other languages. In this paper, we present the details of and the ideas used in the development of a versatile dataset of speech, real and synthesized, of Arabic Learners. To develop the dataset, we utilized an existing Arabic speech corpus, King Saud University Speech Database (KSU-SD). KSU-SD's main application was a speaker recognition system, but it was designed to be useful in other applications such as CAPT systems. KSU-SD includes a large number of speakers from diverse nationalities (Saudis, Arabs, and Non-Arabs). KSU-SD contains the recording of about 60 non-native speakers from more than 20 nationalities, hence we selected it to build the non-native Arabic-CAPT corpus. The developed corpus consists of transcribed, segmented, and annotated speech, which makes it suitable for building Arabic CAPT systems. In addition to presenting the details of developing the dataset, we also present an analysis of the text and speech errors of the dataset. The dataset was verified by many CAPT systems. © 2023 IEEE.

关键词： Deep neural networks

来源：评论

学校读者我要写书评

暂无评论

Countersinking Accuracy control Technology of Robot Drilling and Countersinking Integrated Drilling

Countersinking Accuracy Control Technology of Robot Drilling...

引用

Computer, control and robotics (ICCCR), international conference on

作者： Zhanxi Wang Yuru Fu Hao Xu Minghao Dong Mengge Shi Banghai Zhang School of Mechanical Engineering Northwestern Polytechnical University Xi'an China

Aiming at the problem that: accuracy of countersink will affect the connection strength of aircraft structural parts, aerodynamic performance and fatigue strength of aircraft. A high-precision length meter is used to compensate the error caused by deformation and vibration to the tool. The grating ruler is used to obtain the tool position in real-time to form a closed-loop system. A full closed-loop compound control method based on PID control and feedforward control with low-pass filter is proposed to control the countersinking depth. The proposed control model is verified by the robot drilling and countersinking integrated drilling experiment. The experiment shows that compared with the traditional control method, the countersinking depth error of this control method is the smallest. The effectiveness to improve the accuracy of drilling is verified.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Moving Window Min-Max Algorithm-Based control of UPQC at EV Charging Station 3

Moving Window Min-Max Algorithm-Based Control of UPQC at EV ...

引用

3rd IEEE international conference on Smart Technologies for Power, Energy and control, STPEC 2023

作者： Patel, Arpitkumar J. Sant, Amit V. Pandit Deendayal Energy University School of Energy Technology Department of Electrical Engineering Gandhinagar India

ISBN: (纸本)9798350304732

This paper presents a moving window min-max (MWMM) algorithm-based control of a unified power quality conditioner (UPQC) located at an electric vehicle (EV) charging station. In UPQC, series and shunt compensation require computation of the peak fundamental positive sequence component (FPSC) of load voltage and fundamental active component (FAC) of load current, respectively. During abnormal grid conditions, d-q components contain ripples. Hence, FPSC and FAC estimation requires low-pass filtering. The proposed MWMM algorithm individually computes the mean value of d-q components by averaging the respective maximum and minimum values over a period equivalent to the harmonic of the lowest order. FPSC is computed as the root of the sum of squares of d-q axes load voltages computed by the MWMM algorithm. Similarly, the d-axis load current computed by the MWMM algorithm represents FAC. UPQC is controlled based on thus computed FAC and FPSC. With the proposed MWMM algorithm-based control, UPQC ensures power quality compliance at the charging station while maintaining sinusoidal supply currents at unity power factor and voltage regulation. Further, the experimental study shows that the MWMM algorithm outperforms previously reported techniques in terms of accurate steady-state and fast dynamic responses for FAC and FPSC extraction. © 2023 IEEE.

关键词： charging station electric vehicles power quality unified power quality conditioner (UPQC)

来源：评论

学校读者我要写书评

暂无评论

Direct Adaptive control of Nonaffine Magnetic Levitation System Using Radial Basis Function Neural Network 3

Direct Adaptive Control of Nonaffine Magnetic Levitation Sys...

引用

3rd international conference on Emerging Techniques in Computational Intelligence, ICETCI 2023

作者： Sebastian, Jyothis Shihabudheen, K.V. National Institute of Technology Calicut Department of Electrical Engineering Kozhikode India

ISBN: (纸本)9798350300604

Magnetic levitation system (MLS) is seldom modeled as a nonlinear system. This hinders the incorporation of nonlinearity due to its control input into the model of the system. Literature survey reveals that it can also be modeled as a nonaffine nonlinear system. The controller design of non affine nonlinear system is performed with the help of artificial neural network (NN). But, NNs have disadvantages like local minima trapping and high training time. These issues are resolved to a great extent by resorting to the use of radial basis function NN (RBFNN) for the controller design of nonaffine nonlinear system. In this paper, we have proposed the use of RBFNN to design an adaptive controller for a magnetic ball position system based on MLS. The control objective is for the system output, ball position, to track a desired trajectory. The proposed controller fulfills the control objective better than an adaptive controller based on sigmoid activation function NN. © 2023 IEEE.

关键词： Feedback linearization

来源：评论

学校读者我要写书评

暂无评论

Design and development of cement intelligent control cloud platform 3

Design and development of cement intelligent control cloud p...

引用

3rd IEEE international conference on Information Technology, Big Data and Artificial Intelligence, ICIBA 2023

作者： Bai, Maoqiang Jing, Shaohong University of Jinan College of Automation and Electrical Engineering Shandong China

ISBN: (纸本)9781665490788

At present, there are some problems in the informatization of cement enterprises, such as data lag, poor timeliness, single data source, etc., which can not provide a timely and accurate basis for production decision-making for enterprise management and scheduling personnel. In the aspect of intellectualization, most of them still adopt the 'semi-automatic' operation mode, which is difficult to realize the optimized operation and refined management of the cement production process, which will inevitably lead to many problems such as unstable production and operation, high energy consumption, low thermal efficiency, and large fluctuations in product quality and output. In this paper, the cement intelligent control cloud platform is designed by using the. NET development platform, AJAX front and back data asynchronous interaction technology, database technology, Web Service and other web client development technologies, combined with the cement production process and the production needs of cement enterprises. The cloud platform system developed is divided into three parts: data acquisition layer, service layer and client. It has data analysis, control system management, fault alarm, multi-algorithm model simulation application and other functions, which greatly improves the production efficiency of cement enterprises. © 2023 IEEE.

关键词： Information management

来源：评论

学校读者我要写书评

暂无评论

TOWArdS HIGH DYNAMIC OPERATIONS WITH PARALLEL-SERIAL HYBRID ROBOTS

TOWARDS HIGH DYNAMIC OPERATIONS WITH PARALLEL-SERIAL HYBRID ...

引用

ASME international Design engineering Technical conferences / 43rd Annual Computers and Information in engineering conference (IDETC-CIE) / 47th Mechanisms and robotics conference (MR)

作者： Sagar, Keerthi Ramadoss, Vishal Zoppi, Matteo Irish Mfg Res Ltd Robot & Automat Mullingar Ireland Univ Genoa PMAR Robot Grp I-16145 Genoa Italy

ISBN: (纸本)9780791887363

Hybrid manipulators are a combination of parallel and serial linkage connection robots which can exhibit high articulation and achieve modularity in design. This paper presents the results on the kinematic modeling and motion generation of a parallel-serial hybrid robot architecture. Parallel mechanisms are increasingly being employed as a reconfigurable subsystem alongside serial kinematic chains for high speed machining and manufacturing operations. These kinematic structures have known to have superior stiffness and dynamic properties at the expense of increased complexity in modeling and control. For a specific application of placing fixture heads along sheet metal, a hybrid parallel-serial manipulator is developed. It consists of a spherical revolute (SR) 4-degree-of-freedom (DOF) serial arm mounted on a (3-DOF) parallel manipulator with two UPR (4DOF) legs constrained to move in a common rotating plane, and an SPR (5-DOF) leg. The kinematic architecture utilizes parallel linkage as a positioning manipulator, whereas the serial arm provides the necessary dexterity and increased workspace required for the task. An approach to model such complex kinematic structures with the evaluation of workspace and motion generation is discussed. The presented approach is finally validated both in simulation and with experiments performed on the real platform.

关键词： Parallel mechanisms Manipulators Manufacturing Stiffness Modeling Design Linkages Kinematic chains control modeling High speed machining Simulation Sheet metal Robots Kinematics

来源：评论

学校读者我要写书评

暂无评论

Nonlinear voltage error analysis and control of resonant high precision converter

引用

ENERGY REPORTS 2023年 9卷 49-59页

作者： Wei, Jian Zhang, Jiawei Kou, Baoquan Zhang, Lu Zhang, Hailin Northeast Forestry Univ Coll Mech & Elect Engn Harbin 150040 Heilongjiang Peoples R China Harbin Inst Technol Coll Elect Engn Harbin 150001 Heilongjiang Peoples R China Chongqing Univ Coll Elect Engn Chongqing 400044 Peoples R China

The current nonlinear distortion of power converter can cause motion trajectory error and positioning error of motor, and affect the nano motion and positioning accuracy of ultra-precision system. The resonant pole-based dual buck soft-switching power converter (RPDBSPC) topology does not suffer current distortion caused by blanking time, and can support the high - frequency operation. It is suitable for the field of high dynamic and high-precision motion control. In order to realize the low nonlinear distortion current, the dual buck soft-switching topology should possess high linear output characteristics, and its nonlinear voltage error needs to be suppressed. This paper analyzes the operation principle of resonant power converter, and establishes its state space average model. Based on this, the nonlinear voltage error related resonant process of soft-switching topology is researched. Combined with the resonant equivalent circuit under unbalanced voltage sharing condition and the nonlinear characteristics of switching output capacitance, the expressions of nonlinear voltage error and zero voltage time are deduced, and a nonlinear voltage error suppression method based on zero voltage time control is proposed, which effectively reduces the current nonlinear distortion of resonant power converter.(c) 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://***/licenses/by-nc-nd/4.0/).

关键词： Dual buck soft-switching topology Nonlinear distortion Resonant commutation Voltage error Zero voltage time control

来源：评论

学校读者我要写书评

暂无评论

Connected Eco-driving for Urban Corridors 3

Connected Eco-driving for Urban Corridors

引用

3rd Modeling, Estimation and control conference (MECC)

作者： Wang, Xinpeng Zheng, Han Ahn, Kukhyun Zhang, Xiaowu Deshpande, Shreshta Rajakumar Soto, Ciro Peng, Huei Univ Michigan Dept Mech Engn Ann Arbor MI 48109 USA Ford Motor Co Dearborn MI 48126 USA

ISBN: (纸本)9781713872344

In this work, we develop an eco-driving algorithm for Connected and Automated Vehicles (CAVs) to reduce their energy consumption for urban corridor scenarios. The proposed algorithm considers the uncertainty from both the adaptive traffic signals and the surrounding traffic, thereby increasing its suitability for real-world deployment. In this hierarchical approach, the higher level makes global passing decisions and computes speed targets for further intersections, while the lower level generates smooth and safe speed trajectories. The performance of the algorithm is then demonstrated for an electric vehicle model through extensive (traffic) simulations. Across these experiments, 8-12% energy savings is observed compared to the baseline algorithm. Copyright (c) 2023 The Authors. This is an open access article under the CC BY-NC-ND license (https://***/licenses/by-nc-nd/4.0/)

关键词： Eco-driving Model Predictive control Connected Automated Vehicles

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：