Huei Peng

University of Michigan–Ann Arbor

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A. Galip Ulsoy

University of Michigan–Ann Arbor

Jing Sun

Inner Mongolia University

Anna G. Stefanopoulou

University of Michigan–Ann Arbor

Ding Zhao

Carnegie Mellon University

MÇ

Melih Çakmakçı

Bilkent University

Jay T. Pukrushpan

Université de technologie de belfort-montbéliard

Jessy W. Grizzle

University of Michigan–Ann Arbor

Shaobing Xu

Tsinghua University

Songan Zhang

Shanghai Jiao Tong University

Shengbo Eben Li

Tsinghua University

Cooperative Institutions

University of Michigan–Ann Arbor

158

Tsinghua University

Chinese Academy of Sciences

China Academy of Engineering Physics

Ford Motor Company (United States)

Michigan United

University of California, Berkeley

University of Chinese Academy of Sciences

Sichuan University

PLA Army Engineering University

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Non-Uniform Diffraction Pattern of 2D-Cross-Grating ---Rotating Grating Around Three Axes

Huei Peng

The orientation-dependence of the diffraction patterns of the 1D-grating experiments have been systematically studied by utilizing the 3-axis-rotation apparatus. It is shown that the spacings between adjacent diffraction orders are non-uniform. Namely, from “one end” of the pattern to “other end”, the spacings between adjacent diffraction orders gradually increase. In this article, we systematically study the orientation-dependence of the diffraction patterns of the 2D-cross-grating. The experiments show that the diffraction patterns are non-uniform as that of the 1D-grating experiments. This extraordinary phenomenon challenges the existing theoretical description of the grating experiments. The above observed phenomena provide the comprehensive phenomena to theoretical study of the grating experiments. We suggest that the complete mathematical model should contain three rotation angles as parameters and should be able to describe the phenomena of the non-uniform-spacing, curved, expanded, inclined and mirror-symmetric diffraction patterns consistently.

Ultrasonic grating

Diffraction efficiency

10.36227/techrxiv.19172846

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Research on Virtual Machine Cluster Deployment Algorithm in Cloud Computing Platform

Communications in computer and information science (2016)

Zheng Yao Wensheng Tang Shengchun Wang Huei Peng

10.1007/978-981-10-2209-8_7

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A high-orbit collimating infrared earth simulator

Journal of Physics Conference Series (2007)

Guoyu Zhang Huilin Jiang Yang Fang Huadong Yu XU Xi-ping

The earth simulator is the most important testing equipment ground-based for the infrared earth sensor, and it is also a key component in the satellite controlling system. for three orbit heights 18000Km, 35786Km and 42000Km, in this paper we adopt a project of collimation and replaceable earth diaphragm and develop a high orbit collimation earth simulator. This simulator can afford three angles 15.19°, 17.46° and 30.42°, resulting simulating the earth on the ground which can be seen in out space by the satellite. In this paper we introduce the components, integer structure, and the earth's field angles testing method of the earth simulator in detail. Germanium collimation lens is the most important component in the earth simulator. According to the optical configuration parameter of Germanium collimation lens, we find the location and size of the earth diaphragm and the hot earth by theoretical analyses and optics calculation, which offer foundation of design in the study of the earth simulator. The earth angle is the index to scale the precision of earth simulator. We test the three angles by experiment and the results indicate that three angles errors are all less than ±0.05°.

Collimated light

Earth's orbit

Orbit (dynamics)

Diaphragm (acoustics)

Earth observation

10.1088/1742-6596/48/1/258

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Driving with Caution About Fully Occluded Areas Based on Occupancy Maps

2022 IEEE 25th International Conference on Intelligent Transportation Systems (ITSC) (2023)

Yuanxin Zhong Huei Peng

Safety is one of the key challenges for autonomous vehicles and correct handling of an occluded environment is a critical safety problem. To get prepared for hidden road users, existing methods usually use high-definition (HD) maps with risk assessment methods to avoid possible crashes. In this paper, we propose a trajectory planning method to avoid crashing into hidden road users based on a grid map that can be generated online. The main contribution is to generate imaginary phantoms to mimic the behavior of real road users. We demonstrated that the proposed method is flexible and effective through experiments. The vehicle with the proposed planning algorithm can navigate through narrow and occluded environments safely and smoothly.

Occupancy

10.1109/itsc57777.2023.10422390

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Modelling of uncertain reactive human driving behavior: a classification approach

Yuxiao Chen Nauman Sohani Huei Peng

This paper discusses a novel approach to model human driver behavior. A classification-based method is proposed to construct a reactive bound on possible human driving actions given the scenario description (such as the vehicle states and the behavior of surrounding vehicles). This approach captures the reactiveness and uncertainty of human drivers. Real human driving data is used as the positive training data, while dangerous actions sampled via a Hamilton Jacobi reachability computation constitute the negative training data. A classifier that separates the two groups is then trained via a customized L1. Support Vector Machine (SVM), and an analytical bound function is derived from the classifier which maps the state and surrounding vehicles' actions to the bound on possible actions of the human driver. The credibility of the proposed approach is analyzed under the random convex optimization framework. Potential applications of this work include the computation of safe sets, synthesis of safety guaranteed controllers for systems interacting with humans such as autonomous vehicles, and evaluation of such systems.

10.1109/cdc.2018.8619568

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Dividing Diffraction Pattern of Rotating Grating into Three Portions and Studying Each Portion Respectively ---Revisiting Rotating Grating Experiments

HAL (Le Centre pour la Communication Scientifique Directe) (2022)

Huei Peng

Source

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Wave-Particle Duality of Gravitational Wave and Designed Experiment

Huei Peng Kwang-Shang Wang

Wave–particle duality

Duality (order theory)

Particle (ecology)

10.7392/openaccess.45011851

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Preliminary results on correct-by-construction control software synthesis for adaptive cruise control

Petter Nilsson Omar Hussien Yuxiao Chen Ayça Balkan Matthias Rungger

A plethora of driver convenience and safety automation systems are being introduced into production vehicles, such as electronic stability control, adaptive cruise control, lane keeping, and obstacle avoidance. Assuring the seamless and safe integration of each new automation function with existing control functions is a major challenge for vehicle manufacturers. This challenge is compounded by having different suppliers providing software modules for different control functionalities. In this paper, we report on our preliminary steps to address this problem through a fresh perspective combining formal methods, control theory, and correct-by-construction software synthesis. In particular, we begin the process of synthesizing the control software module for adaptive cruise control from formal specifications given in Linear Temporal Logic. In the longer run, we will endow each interacting software module with an assume-guarantee specification stating under which environment assumptions the module is guaranteed to meet its specifications. These assume-guarantee specifications will then be used to formally prove correctness of the cyber-physical system obtained when the integrated modules interact with the physical dynamics.

Cyber-physical system

10.1109/cdc.2014.7039482

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Citations (42)

On the effect of DC source voltage on inverter-based frequency and voltage regulation in a military microgrid

2022 American Control Conference (ACC) (2012)

Tulga Ersal Changsun Ahn Ian A. Hiskens Huei Peng Anna G. Stefanopoulou

Increasing concerns about energy security and reliability are intensifying the military's interest in the microgrid technology. This paper focuses on the frequency and voltage regulation part of a case study that seeks to design a conceptual military microgrid that has to operate completely autonomously. This microgrid comprises a solar panel and vehicles as power sources, where the vehicles contain a battery and generator, and managing their power setpoints is the control problem of interest. The goal is to investigate the validity of assuming the battery as a constant voltage source during the control design. To this end, the control design is first carried out assuming the battery as a constant voltage source. It is then illustrated how critical this assumption can be depending on the battery internal resistance. The results show that the battery internal resistance can affect both frequency and voltage regulation performances, thereby highlighting the coupling between the battery characteristics and control design, and the need for a control design framework that takes this coupling into account.

Microgrid

Voltage source inverter

10.1109/acc.2012.6315111

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Citations (9)

The Growing Business of Electric Vehicles: A Shift Towards Sustainable Transportation

Rasa Rezaei Huei Peng

This article provides a comprehensive exploration of the electric vehicle (EV) business, investigating its current state, market dynamics, and pivotal role in sustainable transportation. It delves into factors driving EV adoption, challenges faced by the industry, and the landscape of key players. The discussion extends to investments, infrastructure development, consumer trends, and the technological innovations shaping the future. The article concludes with insights into the anticipated growth and transformative impact of EVs, emphasizing their significance in fostering a cleaner, more sustainable future for global transportation.

Sustainable Business

Sustainable transport

10.20944/preprints202401.1798.v1

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