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IEEE Conference on Vehicle Power and Propulsion (VPPC)

作者： Alessandro Ferrara Christoph Hametner Division of Process Control and Automation TU Wien Institute of Mechanics and Mechatronics Vienna Austria Christian Doppler Laboratory for Innovative Control and Monitoring of Automotive Powertrain Systems TU Wien Vienna Austria

ISBN: (数字)9781728189598

ISBN: (纸本)9781728189604

This paper focuses on the energy management of fuel cell/ultracapacitor/battery hybrid vehicles. A robust rule-based strategy is proposed to effectively reduce hydrogen consumption, increase vehicle lifetime, and handle multiple constraints. This strategy won the IEEE VTS Motor Vehicles Challenge 2020. The formulation of the control rules is heavily based on the vehicle model and the analysis of the assigned cost function. A stochastic generation of driving scenarios is proposed to deal with the limited information provided by the challenge, guarantying a robust design of the energy management strategy. The results are analyzed on a large set of synthetic driving cycles.

关键词： Hydrogen Stochastic processes Fuel cells Supercapacitors Propulsion Batteries Fuels

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Distributed Constrained Online Nonconvex Optimization with Compressed Communication

arXiv

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arXiv 2025年

作者： Zhang, Kunpeng Xu, Lei Yi, Xinlei Cao, Ming Johansson, Karl H. Chai, Tianyou Yang, Tao State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Shenyang110819 China Department of Mechanical Engineering University of Victoria VictoriaBCV8W 2Y2 Canada Shanghai Institute of Intelligent Science and Technology National Key Laboratory of Autonomous Intelligent Unmanned Systems Frontiers Science Center for Intelligent Autonomous Systems Ministry of Education Shanghai201210 China Engineering and Technology Institute Groningen Faculty of Science and Engineering University of Groningen GroningenAG 9747 Netherlands Division of Decision and Control Systems School of Electrical Engineering and Computer Science KTH Royal Institute of Technology Sweden Digital Futures Stockholm10044 Sweden

This paper considers distributed online nonconvex optimization with time-varying inequality constraints over a network of agents. For a time-varying graph, we propose a distributed online primal–dual algorithm with compressed communication to efficiently utilize communication resources. We show that the proposed algorithm establishes an O(T max{1−θ1,θ1}) network regret bound and an O(T 1−θ1/2) network cumulative constraint violation bound, where T is the number of iterations and θ1 ∈ (0, 1) is a user-defined trade-off parameter. When Slater’s condition holds (i.e, there is a point that strictly satisfies the inequality constraints at all iterations), the network cumulative constraint violation bound is reduced to O(T 1−θ1). These bounds are comparable to the state-of-the-art results established by existing distributed online algorithms with perfect communication for distributed online convex optimization with (time-varying) inequality constraints. Finally, a simulation example is presented to validate the theoretical results. Copyright © 2025, The Authors. All rights reserved.

关键词： Convex optimization

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Model predictive temperature control for a food transporter with door-openings

Model predictive temperature control for a food transporter ...

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SICE International Symposium on control Systems (ISCS)

作者： Elisabeth Luchini Agnes Poks Dominik Radler Martin Kozek Division of Control and Process Automation Institute of Mechanics and Mechatronics Getreidemarkt 9/325-A5 Vienna Austria PRODUCTBLOKS GmbH Stockerauer Str. 106 Korneuburg Austria

ISBN: (数字)9784907764647

Temperature control of a food supplier vehicle with an insulated cool box (ICB) is critical. Air exchange during the door-opening is a main disturbance which heats up the ICB and accounts for a large part of total cooling load. Usually, this effect is not considered in the control strategy. In this paper a model predictive control (MPC) is used to optimise the temperature control and energy consumption and to handle the door-opening effects. Due to the thermal inertia of the cargo, it can be shown that a technique for estimating the temperature of the cargo instead of the air temperature would lead to a more effective control system. The system and control architecture is presented, the concept of the MPC including door-opening is given and simulation results demonstrate the performance of the concept.

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Wholistic simulation of an all-electric refrigerated delivery vehicle

Wholistic simulation of an all-electric refrigerated deliver...

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SICE International Symposium on control Systems (ISCS)

作者： Agnes Poks Elisabeth Luchini Filip Kitanoski Martin Kozek Division of Control and Process Automation Getreidemarkt 9/325-A5 Institute of Mechanics and Mechatronics Vienna Austria PRODUCTBLOKS GmbH Stockerauer Str. 106 Korneuburg Austria

ISBN: (数字)9784907764647

Large amounts of goods have to be discarded because of a disrupted cooling chain, where last mile delivery is often the crucial part. For future refrigerated trucks which are fully electrified the limited battery capacity calls for detailed investigations. The main contribution of this paper is a detailed model of such an electric truck together with an electric cooling unit, which covers both the power consumption of the drive train and the cooling unit for various driving conditions. The proposed simulation framework is parameterized using measured data from literature, it comprises different weather conditions, door openings, traffic volume as well as the driver aggressiveness. The simulation model uses a minimum number of parameters for an easy fit, and due to it computational efficiency it can be used for applications like model predictive control.

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Zeroth-order algorithms for stochastic distributed nonconvex optimization

arXiv

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arXiv 2021年

作者： Yi, Xinlei Zhang, Shengjun Yang, Tao Johansson, Karl H. Division of Decision and Control Systems School of Electrical Engineering and Computer Science KTH Royal Institute of Technology Stockholm10044 Sweden Department of Electrical Engineering University of North Texas DentonTX76203 United States State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Shenyang110819 China

In this paper, we consider a stochastic distributed nonconvex optimization problem with the cost function being distributed over n agents having access only to zeroth-order (ZO) information of the cost. This problem has various machine learning applications. As a solution, we propose two distributed ZO algorithms, in which at each iteration each agent samples the local stochastic ZO oracle at two points with a time-varying smoothing parameter. We show that the proposed algorithms achieve the linear speedup convergence rate O(√p=(nT)) for smooth cost functions under the state-dependent variance assumptions which are more general than the commonly used bounded variance and Lipschitz assumptions, and O(p=(nT)) convergence rate when the global cost function additionally satisfies the Polyak-Lojasiewicz (P-L) condition in addition, where p and T are the dimension of the decision variable and the total number of iterations, respectively. To the best of our knowledge, this is the first linear speedup result for distributed ZO algorithms, which enables systematic processing performance improvements by adding more agents. We also show that the proposed algorithms converge linearly under the relative bounded second moment assumptions and the P-L condition. We demonstrate through numerical experiments the efficiency of our algorithms on generating adversarial examples from deep neural networks in comparison with baseline and recently proposed centralized and distributed ZO algorithms. Copyright © 2021, The Authors. All rights reserved.

关键词： Cost functions

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Recursive Weighted Null-Space Fitting Method for Identification of Multivariate Systems ⁎

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IFAC-PapersOnLine 2021年第7期54卷 345-350页

作者： Mengyuan Fang Miguel Galrinho Håkan Hjalmarsson Zhejiang Engineering Laboratory of Industrial Internet Communication Technology Zhejiang Sci-Tech University Hangzhou China. State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Shenyang China OHB Sweden AB Kista Sweden Centre for Advanced Bio Production and Division of Decision and Control Systems School of Electrical Engineering and Computer Science KTH Royal Institute of Technology Sweden

Recursive identification of structured multivariate models is known to be difficult due to the general non-convexity of the likelihood function. In this work, we propose a recursive multivariate weighted null-space fitting method for identification of structured multivariate models. The proposed method first uses recursive least squares to estimate a high order non-parametric model, then a parametric model is obtained through weighted least squares from the non-parametric model. In this way, the method avoids directly optimizing a non-convex likelihood function and has guaranteed global convergency. Moreover, the proposed method is flexible in model structures and has the same finite sample performance as its off-line counterpart. We use simulation examples to illustrate the performance.

关键词： Recursive system identification multivariate systems weighted null-space fitting

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Fault Detection and Correction in Omni Bundle Robot Using EKF

Fault Detection and Correction in Omni Bundle Robot Using EK...

引用

International Conference on Manufacturing, Advanced Computing, Renewable Energy and Communication, MARC 2018

作者： Rana, Rohit Agarwal, Vijyant Gaur, Prerna Parthasarathy, Harish Instrumentation and Control Engineering Division Netaji Subhas Institute of Technology Sec-03 Dwarka110078 India Manufacturing Process and Automation Engineering Division Netaji Subhas Institute of Technology Sec-03 Dwarka110078 India Electronics and Communication Engineering Division Netaji Subhas Institute of Technology Sec-03 Dwarka110078 India

ISBN: (纸本)9789811367717

In this paper, the entire focus is on fault detection and correction using extended Kalman filter (EKF) on industrially used omni bundle robot. Here, the authors considered a problem where a robot does monotonous job and repetitively traverse the same trajectory every time. Due to wear and tear or any fluctuation in input signals, the robot may not track the desired trajectory. Faults may arise at various levels in robots, for example, in actuator, encoder, and dynamical parameters. Actuator fault detection using encoder sensor will be the main focus in this research paper. The dynamics of robotic arm link is modeled using a DC motor attached with the link, and the encoder attached with the motor will provide position feedback. The fault is detected using EKF state estimation, and the fault is corrected using a PID controller feedback into the motor input torque. © 2019, Springer Nature Singapore Pte Ltd.

关键词： Extended Kalman filters

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Regret and Cumulative Constraint Violation Analysis for Distributed Online Constrained Convex Optimization

arXiv

引用

arXiv 2021年

作者： Yi, Xinlei Li, Xiuxian Yang, Tao Xie, Lihua Chai, Tianyou Johansson, Karl H. The Division of Decision and Control Systems School of Electrical Engineering and Computer Science KTH Royal Institute of Technology Stockholm10044 Sweden The Digital Futures Stockholm10044 Sweden The Department of Control Science and Engineering College of Electronics and Information Engineering The Shanghai Research Institute for Intelligent Autonomous Systems Tongji University Shanghai China The State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Shenyang110819 China School of Electrical and Electronic Engineering Nanyang Technological University 50 Nanyang Avenue Singapore639798 Singapore

This paper considers the distributed online convex optimization problem with time-varying constraints over a network of agents. This is a sequential decision making problem with two sequences of arbitrarily varying convex loss and constraint functions. At each round, each agent selects a decision from the decision set, and then only a portion of the loss function and a coordinate block of the constraint function at this round are privately revealed to this agent. The goal of the network is to minimize the network-wide loss accumulated over time. Two distributed online algorithms with full-information and bandit feedback are proposed. Both dynamic and static network regret bounds are analyzed for the proposed algorithms, and network cumulative constraint violation is used to measure constraint violation, which excludes the situation that strictly feasible constraints can compensate the effects of violated constraints. In particular, we show that the proposed algorithms achieve O(T max{κ,1-κ}) static network regret and O(T 1-κ/2) network cumulative constraint violation, where T is the time horizon and κ ∈ (0, 1) is a user-defined trade-off parameter. Moreover, if the loss functions are strongly convex, then the static network regret bound can be reduced to O(T κ). Finally, numerical simulations are provided to illustrate the effectiveness of the theoretical results. Copyright © 2021, The Authors. All rights reserved.

关键词： Economic and social effects

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Disturbance observer and ageing estimation for a temperature controlled food transporter

Disturbance observer and ageing estimation for a temperature...

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2018 SICE International Symposium on control Systems, SICE ISCS 2018

作者： Luchini, Elisabeth Kozek, Martin Institute of Mechanics and Mechatronics Division of Control and Process Automation Getreidemarkt 9/325-A5 ViennaA-1060 Austria

ISBN: (纸本)9784907764586

Temperature control of a food transport system with an insulated cool box (ICB) can be efficiently provided by model predictive control (MPC). However, disturbances like solar irradiation or deterioration of the heat transfer coefficient α of the ICB are typically not detected by sensors. In this paper a disturbance observer for solar irradiation is used to design a fast sampled disturbance compensation obtaining a fast response of the system. Two specific characteristics of the disturbance are utilized to estimate α: 1) During nighttime solar irradiation has its minimum. 2) α declines at a very slow rate. The MPC, irradiation estimation, and α estimation are implemented with different sampling rates. This enables separate and robust estimation and efficient implementation. The system and control architecture is presented, the concept of the observer and estimation is given and simulation results demonstrate the performance of the concept. © 2018 The Society of Instrument and control Engineers - SICE.

关键词： Model predictive control

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Comparison of Jinzhen oral liquid and ambroxol hydrochloride and clenbuterol hydrochloride oral solution in the treatment of acute bronchitis in children:A multicenter,non-inferiority,prospective,randomized controlled trial

引用

Acta Pharmaceutica Sinica B 2024年第12期14卷 5186-5200页

作者： Qinhua Fan Chongming Wu Yawei Du Boyang Wang Yanming Xie Zeling Zhang Wenquan Su Zizhuo Wang Changchang Xu Xueke Li Ying Ding Xinjiang An Jing Chen Yunying Xiao Rong Yu Nan Li Juan Wang Yiqun Teng Hongfen Lv Nian Yang Yuling Wen Xiaoli Huang Wei Pan Yufeng Liu Xueqin Xi Qianye Zhao Changshan Liu Jian Xu Haitao Zhang Lie Zhuo Qiangquan Rong Yu Xia Qin Shen Shao Li Junhong Wang Shengxian Wu Dongzhimen Hospital Beijing University of Chinese MedicineBeijing 100700China School of Chinese Materia Medica Tianjin University of Traditional Chinese MedicineTianjin 301617China Institute of Basic Research in Clinical Medicine China Academy of Chinese Medical SciencesBeijing 100700China The First Affiliated Hospital of Henan University of CM Zhengzhou 450099China Xuzhou Children’s Hospital Xuzhou 221002China Women and Children’s Health Care Hospital of Linyi Linyi 276016China Taian Maternity and Child Health Hospital Taian 271001China Wuxi No.8 People’s Hospital Group Wuxi 214011China Shi Jia Zhuang Maternity&Child Healthcare Hospital Shijiazhuang 050006China The First People’s Hospital of Lianyungang Lianyungang 222002China Jiaxing Second Hospital Jiaxing 314001China Jiangyan Hospital of Traditional Chinese Medicine Taizhou 225599China Linshu County People’s Hospital Linyi 276799China Qiqihar Hospital of Traditional Chinese Medicine Qiqihar 161005China Liuzhou Maternal and Child Health Care Hospital Liuzhou 545001China Wuxi Hospital of Traditional Chinese Medicine Wuxi 214071China The Fourth Affiliated Hospital of Liaoning University of Traditional Chinese Medicine Shenyang 110103China Shandong Maternal and Child Health Hospital Jinan 250014China Lianyungang Maternal and Child Health Hospital Lianyungang 222062China The Second Hospital of Tianjin Medical University Tianjin 300211China Qidong Maternal and Child Health Hospital Qidong 226299China Suzhou Integrated Traditional and Western Medicine Hospital Suzhou 215101China Nanjing Drum Tower Hospital Group Suqian Hospital Nanjing 210008China Nanjing Gaochun People’s Hospital Nanjing 211302China Nanjing Lishui People’s Hospital Nanjing 211299China The Affiliated Suqian First People’s Hospital of Nanjing Medical University Suqian 223812China Institute for TCM-X MOE Key Laboratory of BioinformaticsBioinformatics DivisionBNRistDepartment of AutomationTsinghua UniversityBeijing 100084China State Key Laboratory on Technologies for

The comparison between traditional Chinese medicine Jinzhen oral liquid(JZOL)and West-ern medicine in treating children with acute bronchitis(AB)showed encouraging *** trial eval-uated the efficacy and safety of the JZOL for improving cough and expectoration in children with AB.480 children were randomly assigned to take JZOL or ambroxol hydrochloride and clenbuterol hydrochloride oral solution for 7 *** primary outcome was time-to-cough *** median time-to-cough resolution in both groups was 5.0 days and the antitussive onset median time was only 1 *** random-ized controlled trial showed that JZOL was not inferior to cough suppressant and phlegm resolving western medicine in treating cough and sputum and could comprehensively treat respiratory and systemic discom-fort *** with clinical trials,the mechanism of JZOL against AB was uncovered by network target analysis,it was found that the pathways in TRP channels like IL-1b/IL1R/TRPV1/TRPA1,NGF/TrkA/TRPV1/TRPA1,and PGE2/EP/PKA/TRPV1/TRPA1 might play important *** ex-periments further confirmed that inflammation and the immune regulatory effect of JZOL in the treatment of AB were of vital importance and TRP channels were the key mechanism of action.

关键词： Acute bronchitis Jinzhen oral liquid Complementary and alternative medicine Clinical trial Network target analysis

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