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2021 25th International Conference on System Theory, Control and Computing (ICSTCC)最新文献

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Extended Nonideal Passivity Based Controller for DC-DC Boost Converter 基于扩展非理想无源的DC-DC升压变换器控制器
2021 25th International Conference on System Theory, Control and Computing (ICSTCC) Pub Date : 2021-10-20 DOI: 10.1109/ICSTCC52150.2021.9607248
Vlad Mihaly, Mircea Şuşcă, Dora Morar, P. Dobra
{"title":"Extended Nonideal Passivity Based Controller for DC-DC Boost Converter","authors":"Vlad Mihaly, Mircea Şuşcă, Dora Morar, P. Dobra","doi":"10.1109/ICSTCC52150.2021.9607248","DOIUrl":"https://doi.org/10.1109/ICSTCC52150.2021.9607248","url":null,"abstract":"This paper presents an extended method to design passivity-based controllers in the case of nonideal (ENPBC) DCDC boost converters with residual terms, which manages to ensure the closed-loop stability of the nonlinear system along an input trajectory given by a path planning. The ENPBC operates by keeping the reference inductor current at a prescribed value regardless of the output resistance and input voltage, if the bounds of the command signal allow this. Additionally, the path planning was implemented as a proportional-integrator (PI) controller in order to have a dynamical reference for ENPBC, which guarantees that the capacitor voltage can be controlled. All results have been obtained by simulation on a hybrid model in Simscape.","PeriodicalId":413433,"journal":{"name":"2021 25th International Conference on System Theory, Control and Computing (ICSTCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127964745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Inverse dynamic modeling of a parallel wrist rehabilitation robot towards an assistive control modality 面向辅助控制模式的并联腕部康复机器人逆动力学建模
2021 25th International Conference on System Theory, Control and Computing (ICSTCC) Pub Date : 2021-10-20 DOI: 10.1109/ICSTCC52150.2021.9607164
B. Gherman, A. Bănică, P. Tucan, C. Vaida, T. Antal, D. Pisla
{"title":"Inverse dynamic modeling of a parallel wrist rehabilitation robot towards an assistive control modality","authors":"B. Gherman, A. Bănică, P. Tucan, C. Vaida, T. Antal, D. Pisla","doi":"10.1109/ICSTCC52150.2021.9607164","DOIUrl":"https://doi.org/10.1109/ICSTCC52150.2021.9607164","url":null,"abstract":"Due to current limitations in the treatment of the upper limb post-stroke patients, there is a powerful trend in the development of rehabilitation robotic systems. The paper focuses on the development of the inverse dynamic model for the ParReEx-wrist parallel robot designed for the wrist rehabilitation. The model is developed based on the principle of virtual work using the lumped masses model. The derived model offers the possibility of a complex study for ParReEx-wrist robot to evaluate its dynamic capabilities and to generate the assistive control algorithms.","PeriodicalId":413433,"journal":{"name":"2021 25th International Conference on System Theory, Control and Computing (ICSTCC)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132552527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Modeling and Model Predictive Control of a Premixed Turbocharged Natural Gas Engine 天然气预混增压发动机建模与模型预测控制
2021 25th International Conference on System Theory, Control and Computing (ICSTCC) Pub Date : 2021-10-20 DOI: 10.1109/ICSTCC52150.2021.9607160
Qichangyi Gong, Jinbang Xu, Jie Ye, H. Feng, A. Shen
{"title":"Modeling and Model Predictive Control of a Premixed Turbocharged Natural Gas Engine","authors":"Qichangyi Gong, Jinbang Xu, Jie Ye, H. Feng, A. Shen","doi":"10.1109/ICSTCC52150.2021.9607160","DOIUrl":"https://doi.org/10.1109/ICSTCC52150.2021.9607160","url":null,"abstract":"In this paper, a pre-mixed fuel model is proposed and a model predictive control(MPC) strategy is applied to a pre-mixed turbocharged natural gas engine. It is used in genset and the control objective is to track the target speed and air-fuel ratio(AFR), while resisting load disturbance. The pre-mixed fuel system makes the engine a strongly coupled two-input two-output system. Two methods for processing a crucial parameter in the model are presented, and two linearized models are obtained. Based on these two methods, same MPC control strategy is applied to these models respectively. The method 2 which uses polynomial fitting to treat this parameter as a function of system variables, more specifically reveals the coupling characteristics than method 1. The simulation results show that the MPC with method 2 has better control performance.","PeriodicalId":413433,"journal":{"name":"2021 25th International Conference on System Theory, Control and Computing (ICSTCC)","volume":"272 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134021903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Data-Driven Multivariable Control of a Microalgae Growth Process 微藻生长过程的数据驱动多变量控制
2021 25th International Conference on System Theory, Control and Computing (ICSTCC) Pub Date : 2021-10-20 DOI: 10.1109/ICSTCC52150.2021.9607111
G. Ifrim, M. Barbu, G. Horincar, M. Titica
{"title":"Data-Driven Multivariable Control of a Microalgae Growth Process","authors":"G. Ifrim, M. Barbu, G. Horincar, M. Titica","doi":"10.1109/ICSTCC52150.2021.9607111","DOIUrl":"https://doi.org/10.1109/ICSTCC52150.2021.9607111","url":null,"abstract":"Data driven control assembles new techniques that can use data from the plant and find the parameters of the controllers that achieve the desired behavior. The paper presents a simplified virtual reference feedback tuning method applied on the photosynthetic growth process of microalgae in photo bioreactor. The complex nonlinear nature of the process requires multiple control channels to establish the proper operating conditions for high growth yields. Two control channels were selected, namely dilution- biomass and CO2 gas flow-pH, on which independent controllers were designed. The data used for training was obtained with a benchmark model that was validated on different reactor types and microalgae strains. The obtained controllers were validated in simulation and proved to attenuate the interferences between the control channels.","PeriodicalId":413433,"journal":{"name":"2021 25th International Conference on System Theory, Control and Computing (ICSTCC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131512554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
MPTCP or MPQUIC - Which One is Better for General-Purpose Networking MPTCP或MPQUIC——哪一个更适合通用网络
2021 25th International Conference on System Theory, Control and Computing (ICSTCC) Pub Date : 2021-10-20 DOI: 10.1109/ICSTCC52150.2021.9607104
M. Morawski, P. Ignaciuk
{"title":"MPTCP or MPQUIC - Which One is Better for General-Purpose Networking","authors":"M. Morawski, P. Ignaciuk","doi":"10.1109/ICSTCC52150.2021.9607104","DOIUrl":"https://doi.org/10.1109/ICSTCC52150.2021.9607104","url":null,"abstract":"Multipath transmission becomes a recognized alternative for the traditional Quality of Service architectures. Two multipath protocols: MPTCP and MPQUIC have found wider acceptance. Both have different advantages and weaknesses from the application viewpoint. The paper presents a comprehensive comparison of their general-purpose traffic properties evaluated in the public Internet by means of physical devices. The analysis concentrates on dynamical profiles of throughput and delay for single and multiple parallel flows. Based on the obtained measurements, recommendations and improvement directions are provided.","PeriodicalId":413433,"journal":{"name":"2021 25th International Conference on System Theory, Control and Computing (ICSTCC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131821611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Machine Leaning Algorithms and Time Series Feature Extraction Library for Electricity Consumption Fraud Detection in Smart Grids 智能电网用电欺诈检测的机器学习算法和时间序列特征提取库
2021 25th International Conference on System Theory, Control and Computing (ICSTCC) Pub Date : 2021-10-20 DOI: 10.1109/ICSTCC52150.2021.9607308
S. Oprea, A. Bâra, G. Ene
{"title":"Machine Leaning Algorithms and Time Series Feature Extraction Library for Electricity Consumption Fraud Detection in Smart Grids","authors":"S. Oprea, A. Bâra, G. Ene","doi":"10.1109/ICSTCC52150.2021.9607308","DOIUrl":"https://doi.org/10.1109/ICSTCC52150.2021.9607308","url":null,"abstract":"Smart meters read the consumption at different time resolutions and may generate large volumes of time series that require special tools for consumption monitoring and fraud detection. Usually, the readings of the smart meter have numerous null values and outliers that impact the results of fraud detection. Feature extraction from time series is a challenge especially when patterns and irregularities have to be identified. Therefore, we propose to implement ten Machine Learning (ML) supervised algorithms with the very recent Python library - TSFEL that stands for Time Series Feature Extraction Library and automatically extracts time series and over 60 features from statistical (such as: mean absolute deviation, variance, interquartile range), temporal (such as: autocorrelation, mean absolute differences, entropy, peak to peak distance) and spectral (such as: FFT mean coefficient, wavelet absolute mean, standard deviation, spectral distance, fundamental frequency) perspective. Two algorithms, Multi-Layer Perceptron and Light Gradient Boost, provide very good results in identifying suspicious consumers on a real consumption dataset recorded in China by the utility company State Grid Corporation of China. The performance of TSFEL and ML algorithms is compared with the case without feature engineering. A data processing methodology is proposed for data processing including several significant stages before training the model.","PeriodicalId":413433,"journal":{"name":"2021 25th International Conference on System Theory, Control and Computing (ICSTCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130858285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Estimating a degree of evolving market efficiency: How efficient is the Romanian stock market? 估计市场效率的演变程度:罗马尼亚股市的效率如何?
2021 25th International Conference on System Theory, Control and Computing (ICSTCC) Pub Date : 2021-10-20 DOI: 10.1109/ICSTCC52150.2021.9607175
M. V. Kulikova, D. Taylor, G. Kulikov
{"title":"Estimating a degree of evolving market efficiency: How efficient is the Romanian stock market?","authors":"M. V. Kulikova, D. Taylor, G. Kulikov","doi":"10.1109/ICSTCC52150.2021.9607175","DOIUrl":"https://doi.org/10.1109/ICSTCC52150.2021.9607175","url":null,"abstract":"In this paper, a form of adaptive weak-form market efficiency of the Romanian stock market is examined via a state-space approach. A general methodology for estimating evolving efficiency is proposed within the extended Kalman filter associated with the customized state-space models in this work. The suggested approach for measuring a time-varying degree of market efficiency is based on time-dependent autoregressive (AR) models where a conclusion regarding the evolving efficiency is deduced by tracking the changes in regression coefficients. Motivated by previous studies of the Bucharest stock exchange, we explore a structural time-series model that contains a stochastic trend and a white noise component. Monthly data covers the period from September 1997 to December 2020, which includes the period of the 2008–2009 global financial crisis and the recent COVID-19 recession. Our major findings reveal that the Romanian stock market is weak-form efficient at the end of our empirical study and has not been greatly affected by the first wave of the COVID-19 pandemic. However, it suffered severely during the 2008–2009 crisis, which is reflected in a lingering recovery process.","PeriodicalId":413433,"journal":{"name":"2021 25th International Conference on System Theory, Control and Computing (ICSTCC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132292432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Building Energy Optimization with MPC Controller 基于MPC控制器的建筑能源优化
2021 25th International Conference on System Theory, Control and Computing (ICSTCC) Pub Date : 2021-10-20 DOI: 10.1109/ICSTCC52150.2021.9607246
Yanis Masdoua, M. Boukhnifer, K. Adjallah
{"title":"Building Energy Optimization with MPC Controller","authors":"Yanis Masdoua, M. Boukhnifer, K. Adjallah","doi":"10.1109/ICSTCC52150.2021.9607246","DOIUrl":"https://doi.org/10.1109/ICSTCC52150.2021.9607246","url":null,"abstract":"The energy consumption of buildings has become an issue of concern in recent years and a challenge for many researchers worldwide. One of the solutions to this problem is the optimal control of Heating, ventilation, and air conditioning (HVAC) systems. According to our results, optimal control can save more than 34% of energy. In this paper, a model predictive control (MPC) that is able of considering weather and human factors has been deployed and compared to an ON-OFF controller. The MPC controller was able to optimize energy consumption, ensure maximum comfort and, above all, a good conservation of HVAC equipment through optimizing the system’s use.","PeriodicalId":413433,"journal":{"name":"2021 25th International Conference on System Theory, Control and Computing (ICSTCC)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115383369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Online identification of pain model in postanesthesia care unit for drug infusion optimization 麻醉后护理单元疼痛模型的在线识别以优化药物输注
2021 25th International Conference on System Theory, Control and Computing (ICSTCC) Pub Date : 2021-10-20 DOI: 10.1109/ICSTCC52150.2021.9607227
Mihaela Ghita, D. Copot, M. Ghita, D. Valério, C. Ionescu
{"title":"Online identification of pain model in postanesthesia care unit for drug infusion optimization","authors":"Mihaela Ghita, D. Copot, M. Ghita, D. Valério, C. Ionescu","doi":"10.1109/ICSTCC52150.2021.9607227","DOIUrl":"https://doi.org/10.1109/ICSTCC52150.2021.9607227","url":null,"abstract":"The paper introduces several model structures for data-driven characterization of drug-to-effect curves for patients experiencing pain. The purpose is to link opioid input to the pain level effect in the body. Fractional order impedance models are proposed and evaluated to characterize comprehensive dynamics. Data used for identification is recorded in patients following surgery and experiencing postoperative pain. In this work, we use the prototype Anspec-PRO monitor based on skin impedance with persistent excitation and 2D or 3D output representation. Notwithstanding dynamic complexity, understanding feedback paths in physiological pain pathways is fundamental. This particular prototype allows real-time characterization of frequency-dependent impedance, enabling online identification. The mathematical assessment of experienced pain is an important step towards modeling surgical disturbance effects within the depth of anesthesia paradigm.","PeriodicalId":413433,"journal":{"name":"2021 25th International Conference on System Theory, Control and Computing (ICSTCC)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114652909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
A Time-Based Approach to the Modelling of Power Distribution Grids 基于时间的配电网建模方法
2021 25th International Conference on System Theory, Control and Computing (ICSTCC) Pub Date : 2021-10-20 DOI: 10.1109/ICSTCC52150.2021.9607222
Stefan Ecklebe, Sebastian Krahmer, K. Röbenack
{"title":"A Time-Based Approach to the Modelling of Power Distribution Grids","authors":"Stefan Ecklebe, Sebastian Krahmer, K. Röbenack","doi":"10.1109/ICSTCC52150.2021.9607222","DOIUrl":"https://doi.org/10.1109/ICSTCC52150.2021.9607222","url":null,"abstract":"As the amount of volatile, renewable energy sources in power distribution grids is increasing, the stability of the latter is a vital aspect for grid operators. Within the STABEEL project, the authors seek to develop better rules on how to parametrise the reactive power control of various sources within a distribution grid to increase the performance while guaranteeing stability. As a first step in this direction, this contribution presents a time-domain based modelling approach for a fixed grid frequency that provides the state-space models needed for the following stability analysis. In detail, models for generic grid components are created which are later combined into a dynamic system by using a provided grid topology. Depending on the specific design goal, this process yields different model variants which are evaluated by using a benchmark model.","PeriodicalId":413433,"journal":{"name":"2021 25th International Conference on System Theory, Control and Computing (ICSTCC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125928696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
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