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检索条件"任意字段=3rd AIAA Flow Control Conference"

共 2648 条记录，以下是21-30 订阅

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Automatic Adjustment of Power Grid Typical Operating Modes Based on Multi-Section control Method 3

Automatic Adjustment of Power Grid Typical Operating Modes B...

引用

3rd Asia Power and Electrical Technology conference, APET 2024

作者： Wang, Jiecong Lu, Guangming Yu, Zhihong Wang, Bing China Electric Power Research Institute Beijing China

ISBN: (纸本)9798350367690

Typical operating modes refer to the operational states formed by combinations of specified power settings for typical load levels, flood/dry seasons, new energy simultaneity rates, and High Voltage Direct Current (HVDC) transmission and AC section transmission. The essence of adjusting and generating typical operating modes for power grids is a power flow adjustment problem in large-scale power grids with constraints. Currently, it is difficult to directly achieve power flow adjustment in large-scale and complex power grids through nonlinear programming methods. Therefore, the adjustment and generation of operating modes at this stage still require the collaborative efforts of staff from national, regional, and provincial dispatching centers across different locations. Based on the multi-sectional control method and drawing inspiration from the planned power flow algorithm, this paper proposes an automatic adjustment and generation method for typical operating modes, which can automatically adjust and generate multiple sets of typical operating modes from a single base case. The effectiveness of the proposed method is verified through practical examples from regional power grids. © 2024 IEEE.

关键词： Load flow control

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A Stable flow control Method for High Precision Series Plunger Infusion Pump Used in HPLC 3

A Stable Flow Control Method for High Precision Series Plung...

引用

3rd International conference on Electrical Engineering and control Science, IC2ECS 2023

作者： Liu, Jianze Zeng, Ting Wei, Xingya Sheng, Jun Yin, Shen Beijing Spacecraft Manufacturing Co. Ltd Beijing100094 China

ISBN: (纸本)9798350382426

In order to achieve low pulsation and high precision constant flow output of a series plunger infusion pump for HPLC, a flow control method based on S-curve for series plunger infusion pumps is proposed. Firstly, motion planning is carried out for the stepper motor. Secondly, the S-curve algorithm is used to achieve smooth driving of the plunger by the stepper motor. Finally, the feasibility of the proposed method is verified through motor operation tests and flow accuracy tests. The experimental results show that this method achieves constant flow and low pulsation output of the series plunger infusion pump, and using the S-curve control algorithm, the flow stability of the infusion pump is significantly improved, with an RSD of 0.055%. © 2023 IEEE.

关键词： component control S-curve Series Plunger Infusion Pump stepper motor

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Analysis, Design, and control of the Dual Active Bridge Converter for EV Battery Charging 3

Analysis, Design, and Control of the Dual Active Bridge Conv...

引用

3rd International conference on Power, control and Computing Technologies, ICPC2T 2024

作者： Srivastava, Kalash Firake, Dinanaath Maurya, Rakesh Kumar, Shailendra Sardar Vallabhbhai National Institute of Technology Gujarat Surat395007 India Indian Institute of Technology Chhattisgarh Bhilai India

ISBN: (纸本)9798350349207

The growing demand for electric vehicles (EVs) has increased the need for high-quality EV battery chargers. The dual active bridge (DAB) converter, with its safety features like high-frequency galvanic isolation and bidirectional power flow, has become a promising solution for efficient EV battery charging. This paper explores the mathematical modeling, control, and design of the DAB converter-based EV battery charging system under different operating conditions. In order to regulate the power transfer, a single-phase shift (SPS) modulation strategy is employed during constant current (CC) /constant voltage (CV) charging modes. A prototype scaled model rated at 24W is developed in the laboratory environment with operating frequency of 10kHz and tested under varying supply conditions. © 2024 IEEE.

关键词： Charging (batteries)

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Highway Traffic flow control Model and Simulation Based on Fuzzy control 3

Highway Traffic Flow Control Model and Simulation Based on F...

引用

3rd International conference on Computer Science, Electronic Information Engineering and Intelligent control Technology, CEI 2023

作者： Nie, Binghua Ma, Bin Henan Ruisheng Intelligent Technology Co. Ltd Zhengzhou China School of Information Engineering North China University of Water Resources and Hydropower Zhengzhou China

ISBN: (纸本)9798350372052

With the continuous expansion of the scale of highways, the growing contradiction between traffic demand and capacity has become an undeniable societal issue. Preventing congestion on highways and improving the efficiency of road usage has always been a focal point of research in the field of highway traffic control. In order to enhance the traffic operating environment, this paper establishes a traffic flow control simulation model and designs a fuzzy control algorithm to simulate the traffic flow state on highways. Subsequently, a comparative analysis is conducted on the traffic states under different strategies, including no-control, ALINEA control, and fuzzy control. To further demonstrate the effectiveness of fuzzy control, this paper relies on real data from the Xibao Expressway to simulate the traffic flow under fuzzy control. The results indicate that under equivalent conditions, the fuzzy control method can achieve superior performance. © 2023 IEEE.

关键词： Fuzzy control

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Intelligent control Technology in Rural Landscape Environment Design 3

Intelligent Control Technology in Rural Landscape Environmen...

引用

3rd IEEE International conference on Distributed Computing and Electrical Circuits and Electronics, ICDCECE 2024

作者： Li, Fenghua Zhu, Qicong Guangdong Baiyun University GuangDong GuangZhou China

ISBN: (纸本)9798350318609

Traditional rural landscape environment design is often based on static concepts, ignoring the dynamic changes of the environment. This makes it difficult for designs to cope with constantly changing climate, human flow, and ecological conditions. This article utilizes intelligent control technology to achieve dynamic design of rural landscape environment, adapting to changes in seasons, weather, and pedestrian flow, and providing more intelligent, sustainable, and user-friendly solutions for rural landscape environment design. It collects data information related to rural landscape environment through sensors and preprocesses the collected data. The experimental results show that the average accuracy of LSTM model for climate and human flow prediction is 95.3 % and 93.2%, respectively. Therefore, using LSTM can accurately predict the rural environment and improve the user's experience of rural landscape environment design. © 2024 IEEE.

关键词： Long short-term memory

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Complex Coefficient Droop control with High Bandwidth Inner Voltage Loop 3

Complex Coefficient Droop Control with High Bandwidth Inner ...

引用

3rd Asia Power and Electrical Technology conference, APET 2024

作者： Pang, Jinian Du, Jian Yang, Zhenghe Xia, Rui Chen, Sha Ji, Yu State Grid Suqian Power Supply Company State Grid Corporation of China Nanjing China Shuangchuang Center State Grid Jiangsu Electric Power CO. LTD Nanjing China

ISBN: (纸本)9798350367690

This article proposes an improved droop control method based on complex droop coefficient with high bandwidth complex variable inner voltage control, which simplifies the design process of the inner voltage control by using complex variables and eliminates the slow dominant pole introduced by the controller by introducing feedforward control. Based on the high bandwidth voltage inner loop, the power control of the outer loop adopts complex coefficient droop control, which considers the coupling of active power and reactive power caused by line impedance, which makes the power flow have a more ideal direction. © 2024 IEEE.

关键词： Feedforward control

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Research on high precision flow control technology of low speed wind tunnel air supply system 3

Research on high precision flow control technology of low sp...

引用

2023 3rd International conference on Measurement control and Instrumentation, MCAI 2023

作者： Tang, Ling Ye, Jian Kang, Hongming China Aerodynamics Research and Development Center Mianyang China

Aiming at the shortcomings of traditional analog control valves and digital valves, a high-pressure air supply system with accurate flow control is designed. Firstly, the ER5000 controller and pilot proportional valve drive several diaphragm reducing valves to achieve the preliminary adjustment of air pressure. Secondly, a needle valve based on the PCM digital valve and equal percentage flow characteristics is used to achieve accurate control of gas flow. Then, the Venturi flow meter with a honeycomb and damping network is used to accurately measure the airflow. Finally, a PID flow control algorithm based on nonlinear self-tuning is proposed. The results show that the flow regulation range of the system reaches 0.1-8 kg/s, the absolute control accuracy is better than ±3 g/s, and the relative control accuracy is better than ±0.04%. Moreover, the system has the characteristics of short regulation time, small overshoot, and good dynamic performance, which can achieve strong support for wind tunnel air supply tests. © Published under licence by IOP Publishing Ltd.

关键词： flow of gases

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Research on Lake Water Level control Based on Simulated Annealing Multi-Objective Planning Modeling 3

Research on Lake Water Level Control Based on Simulated Anne...

引用

3rd International conference on Data Analytics, Computing and Artificial Intelligence, ICDACAI 2024

作者： Ping, Yuyang Huang, Weihao Xiangtan University Xiangtan China

ISBN: (纸本)9798331519032

This paper focuses on the water level management problem of the Great Lakes, and solves the problem of solving the water level control problem by constructing a network flow model and an intelligent perception model. First, we constructed network maps of the Great Lakes and rivers using the collected water level data, and derived the optimal water level of the Great Lakes at any time of the year through a multi-objective planning model based on simulated annealing. Based on this, we constructed network flow maps and optimization-oriented models for the lakes and rivers. Next, we gradually added dam influences and continued with simulated water level control. Evaluation based on the entropy weight-TOPSIS model yielded an optimization model score of 0.743, while the actual water level score was 0.428, which indicated that our model better controlled the water level. Finally, based on the AHP model in order to determine the weights of each stakeholder, it was found that shipping companies have the greatest influence on the water level of Lake Ontario. Also, through multiple linear regression modeling, we found that the four major lakes and the St. Lawrence River have a greater influence on Lake Ontario. © 2024 IEEE.

关键词： Lakes

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Numerical study of the flow noise generated by an underwater vehicle with appendages 3

Numerical study of the flow noise generated by an underwater...

引用

2024 3rd International conference on Acoustics, Fluid Mechanics and Engineering, AFME 2024

作者： Wu, Jiafeng Xu, Ziqi Li, Qiaojiao Wei, Wei Laboratory of Aerodynamic Noise Control China Aerodynamics Research and Development Center Mianyang Sichuan621000 China Research and Development Center Wuhan Second Ship Design and Research Institute Wuhan Hubei430205 China

The appendages of underwater vehicles, such as the stern, are a primary source of flow noise. In the present study, we investigate an underwater vehicle model and analyze the effects of cross-shaped and X-shaped sterns on flow noise using numerical simulation methods. The results indicate that the underwater vehicle with an X-shaped stern exhibits lower resistance and sound pressure levels compared to one with a cross-shaped stern. © Published under licence by IOP Publishing Ltd.

关键词： Underwater acoustics

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Enhancing Traffic control Strategies through Dynamic Simulation and Reinforcement Learning 3

Enhancing Traffic Control Strategies through Dynamic Simulat...

引用

3rd International conference on Applied Artificial Intelligence and Computing, ICAAIC 2024

作者： Sebastian, Alona Mary Athulram, K.R. Michael, Colin Sunil, Diya Anna Preetha, K.G. Rajagiri School of Engineering and Technology Dept. of Computer Science and Engineering Ernakulam India

ISBN: (纸本)9798350375190

In urban areas, traffic congestion is a major problem causing increased travel times, higher consumption of fuel, and environmental pollution. The traditional traffic control systems cannot adapt to dynamic traffic conditions, causing inefficient traffic flow and inefficient use of road infrastructure. In this paper, we propose a novel method to enhance traffic management strategies through dynamic simulation and reinforcement learning (RL). A simulation framework is presented that models the complex interactions among vehicles, traffic signals, and infrastructure in a realistic urban environment. Within this framework, RL agents are deployed to learn adaptive traffic control policies that minimize congestion and optimize traffic flow. This approach uses the ability of RL to continuously learn and adjust to shifting traffic circumstances, which results in improved efficiency and responsiveness compared to static or rule-based control systems. Finally, evaluate the effectiveness of the approach through extensive simulations and demonstrate its capability to significantly reduce congestion, decrease travel times, decrease average waiting time and enhance overall traffic management. By integrating dynamic simulation and RL-based control strategies, the proposed approach offers a guaranteed solution for addressing the challenges of urban traffic congestion and advancing the field of intelligent transportation systems. © 2024 IEEE.

关键词： Reinforcement learning

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