Pub Date : 2021-03-22DOI: 10.1109/ICAACCA51523.2021.9465298
Fernando Castillo, Luis E. Arias, Hugo O. Garcés, A. Rojas
A flame emits energy over a wide spectral region, and its associated spectra contain both continuous and discontinuous components, closely related to the combustion process current state. However, the non-linear and turbulent nature of the flame, high dimensionality of the spectral data, and the overlap between continuous and discontinuous spectral emissions requires the use of complex method to obtain valuable information for combustion closed loop-control and optimization. This work analyzes the spectral emission of the flame emitted by LPG flames to compute high resolution spectra combining the Maloney-Wandell spectral recovery method and field information of flame images with low spectral resolution. Then, we obtain different variables such as the flame temperature (in K) and local radiance (in μW=cm2), performing a dynamic, spectral and spatial combustion diagnostics.
{"title":"Turbulent Flame Monitoring Using Spectral Estimation Techniques","authors":"Fernando Castillo, Luis E. Arias, Hugo O. Garcés, A. Rojas","doi":"10.1109/ICAACCA51523.2021.9465298","DOIUrl":"https://doi.org/10.1109/ICAACCA51523.2021.9465298","url":null,"abstract":"A flame emits energy over a wide spectral region, and its associated spectra contain both continuous and discontinuous components, closely related to the combustion process current state. However, the non-linear and turbulent nature of the flame, high dimensionality of the spectral data, and the overlap between continuous and discontinuous spectral emissions requires the use of complex method to obtain valuable information for combustion closed loop-control and optimization. This work analyzes the spectral emission of the flame emitted by LPG flames to compute high resolution spectra combining the Maloney-Wandell spectral recovery method and field information of flame images with low spectral resolution. Then, we obtain different variables such as the flame temperature (in K) and local radiance (in μW=cm2), performing a dynamic, spectral and spatial combustion diagnostics.","PeriodicalId":328922,"journal":{"name":"2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA)","volume":"149 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125144936","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}
Pub Date : 2021-03-22DOI: 10.1109/ICAACCA51523.2021.9465240
Jorge Varela, Miguel Parada
This paper presents a detailed time domain simulation of a synchronous generator connected to an infinite bus though a transmission line with series capacitors, for the purpose of analyzing the causes and effects of subsynchronous resonance. To mitigate the serious damage that this phenomenon might cause to the generation unit shafts, a supplementary control of the synchronous generator excitation system, and the NGH damping scheme are analyzed. The effectiveness of these mitigation methods is verified by numerical simulations on MATLAB, based on Runge-Kutta algorithms.
{"title":"Simulation and mitigation of subsynchronous resonance in power systems","authors":"Jorge Varela, Miguel Parada","doi":"10.1109/ICAACCA51523.2021.9465240","DOIUrl":"https://doi.org/10.1109/ICAACCA51523.2021.9465240","url":null,"abstract":"This paper presents a detailed time domain simulation of a synchronous generator connected to an infinite bus though a transmission line with series capacitors, for the purpose of analyzing the causes and effects of subsynchronous resonance. To mitigate the serious damage that this phenomenon might cause to the generation unit shafts, a supplementary control of the synchronous generator excitation system, and the NGH damping scheme are analyzed. The effectiveness of these mitigation methods is verified by numerical simulations on MATLAB, based on Runge-Kutta algorithms.","PeriodicalId":328922,"journal":{"name":"2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131570810","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}
Pub Date : 2021-03-22DOI: 10.1109/ICAACCA51523.2021.9465203
C. Rodríguez, Matias Malhue, M. Díaz, Enrique Espina, F. Rojas
Hybrid Alternating Current (AC) and Direct Current (DC) microgrids have been in the spotlight in the last years because they allow connection of AC and DC resources and reduces multiple power conversion in single AC or DC microgrids. The AC and DC stages are connected through interlinking converters, which manage the power transference among both sub-microgrids using droop control strategies for each single AC or DC microgrid. This paper proposes a threestage droop control strategy to regulate the power inside the sub-microgrids at the same time that bidirectional AC-DC power transference is enabled. Simulation results obtained with a hybrid microgrid model composed of five generation units are presented to validate the effectiveness of this proposal..
{"title":"A Droop Based Control Strategy for Bidirectional Power Regulation in Hybrid ACmC Microgrids","authors":"C. Rodríguez, Matias Malhue, M. Díaz, Enrique Espina, F. Rojas","doi":"10.1109/ICAACCA51523.2021.9465203","DOIUrl":"https://doi.org/10.1109/ICAACCA51523.2021.9465203","url":null,"abstract":"Hybrid Alternating Current (AC) and Direct Current (DC) microgrids have been in the spotlight in the last years because they allow connection of AC and DC resources and reduces multiple power conversion in single AC or DC microgrids. The AC and DC stages are connected through interlinking converters, which manage the power transference among both sub-microgrids using droop control strategies for each single AC or DC microgrid. This paper proposes a threestage droop control strategy to regulate the power inside the sub-microgrids at the same time that bidirectional AC-DC power transference is enabled. Simulation results obtained with a hybrid microgrid model composed of five generation units are presented to validate the effectiveness of this proposal..","PeriodicalId":328922,"journal":{"name":"2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125256538","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}
Pub Date : 2021-03-22DOI: 10.1109/ICAACCA51523.2021.9465273
Á. Fernández, M. Díaz, F. Rojas, L. Reyes-Chamorro, H. Chávez
This paper evaluates the impact of the electric power tariff on the total cost of ownership of electric vehicle purchase projects. Projects are analysed comparing electric vehicles with equivalent internal combustion engines vehicles. The annual equilibrium distance, Chilean energy tariffs, government incentives, and vehicle-to-grid utilities are considered in the analyses. Additionally, the current regulation in Chile is compared with special electrical vehicle energy tariffs applied in other countries is analysed to find possible spots to make electric vehicle projects more convenient.
{"title":"Impact of the Electrical Energy-Tariff and Vehicle-to-Grid in the Total Cost of Ownership of Electromobility Projects","authors":"Á. Fernández, M. Díaz, F. Rojas, L. Reyes-Chamorro, H. Chávez","doi":"10.1109/ICAACCA51523.2021.9465273","DOIUrl":"https://doi.org/10.1109/ICAACCA51523.2021.9465273","url":null,"abstract":"This paper evaluates the impact of the electric power tariff on the total cost of ownership of electric vehicle purchase projects. Projects are analysed comparing electric vehicles with equivalent internal combustion engines vehicles. The annual equilibrium distance, Chilean energy tariffs, government incentives, and vehicle-to-grid utilities are considered in the analyses. Additionally, the current regulation in Chile is compared with special electrical vehicle energy tariffs applied in other countries is analysed to find possible spots to make electric vehicle projects more convenient.","PeriodicalId":328922,"journal":{"name":"2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131807815","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}
Pub Date : 2021-03-22DOI: 10.1109/ICAACCA51523.2021.9465261
Hugo Gallardo, Luis Martinez, J. Guzmán, P. Melín, C. Baier, Javier A. Muñoz, E. Espinosa
In previous work, it was proposed to use multilevel current source converters to increase the current capacity as well as improve the harmonic profile of medium voltage and high current drives. Recent publications suggest that both (a) its intrinsic booster characteristics and (b) its easy way to handle independent DC sources operating in parallel make this topology an attractive alternative for the direct connection of photovoltaic plants to the grid. Furthermore, staggered optimized patterns were proposed together to modular topologies regarding the improvement on harmonic profile of injected currents to the grids. One of these techniques are the staggered Selective Harmonic Elimination. An alternative is the straightforward optimization for reduce the error among a time-based reference and the modulated current pattern. This work presents a comparison between three optimized patterns for the operation of staggered patterns in current source converters, for both symmetric and asymmetric cases. Theoretical results that are validated by simulation are presented.
{"title":"A Comparison Among Different Staggered Optimized Gating Patterns for Asymmetric Single-Phase Current Source Inverters","authors":"Hugo Gallardo, Luis Martinez, J. Guzmán, P. Melín, C. Baier, Javier A. Muñoz, E. Espinosa","doi":"10.1109/ICAACCA51523.2021.9465261","DOIUrl":"https://doi.org/10.1109/ICAACCA51523.2021.9465261","url":null,"abstract":"In previous work, it was proposed to use multilevel current source converters to increase the current capacity as well as improve the harmonic profile of medium voltage and high current drives. Recent publications suggest that both (a) its intrinsic booster characteristics and (b) its easy way to handle independent DC sources operating in parallel make this topology an attractive alternative for the direct connection of photovoltaic plants to the grid. Furthermore, staggered optimized patterns were proposed together to modular topologies regarding the improvement on harmonic profile of injected currents to the grids. One of these techniques are the staggered Selective Harmonic Elimination. An alternative is the straightforward optimization for reduce the error among a time-based reference and the modulated current pattern. This work presents a comparison between three optimized patterns for the operation of staggered patterns in current source converters, for both symmetric and asymmetric cases. Theoretical results that are validated by simulation are presented.","PeriodicalId":328922,"journal":{"name":"2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA)","volume":"70 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120924747","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}
Pub Date : 2021-03-22DOI: 10.1109/ICAACCA51523.2021.9465321
D. Murillo-Yarce, M. Rivera, C. Restrepo, Javier A. Muñoz, C. Baier, R. Rodríguez, P. Wheeler, P. Zanchetta, G. Mirzaeva
In the classical predictive control (CPC) implementation a cost function designed in terms of the control objectives and constants known as weighting factors must be minimized. Weighting factors are usually obtained by trial and error since there is no methodology to find the best factors, which also improve the controller performance. One possible solution is sequential predictive control (SPC) that proposes to eliminate weighting factors by sequential evaluation of simple cost functions. The contribution of this work is to analyze in detail the SPC performance and compare the results with a classic predictive current controller, in a VSI converter feeding an RL load where common-mode voltage is also reduced. Matlab/Simulink simulation results show that the SPC technique is able to reduce the common-mode voltage by half and still obtaining a balanced current system with an allowable THD, which is not feasible for the CPC technique. These findings demonstrate that SPC can improve results obtained with CPC without using weighting factors.
{"title":"Common-Mode Voltage Reduction in a VSI Inverter Applying Sequential Predictive Control","authors":"D. Murillo-Yarce, M. Rivera, C. Restrepo, Javier A. Muñoz, C. Baier, R. Rodríguez, P. Wheeler, P. Zanchetta, G. Mirzaeva","doi":"10.1109/ICAACCA51523.2021.9465321","DOIUrl":"https://doi.org/10.1109/ICAACCA51523.2021.9465321","url":null,"abstract":"In the classical predictive control (CPC) implementation a cost function designed in terms of the control objectives and constants known as weighting factors must be minimized. Weighting factors are usually obtained by trial and error since there is no methodology to find the best factors, which also improve the controller performance. One possible solution is sequential predictive control (SPC) that proposes to eliminate weighting factors by sequential evaluation of simple cost functions. The contribution of this work is to analyze in detail the SPC performance and compare the results with a classic predictive current controller, in a VSI converter feeding an RL load where common-mode voltage is also reduced. Matlab/Simulink simulation results show that the SPC technique is able to reduce the common-mode voltage by half and still obtaining a balanced current system with an allowable THD, which is not feasible for the CPC technique. These findings demonstrate that SPC can improve results obtained with CPC without using weighting factors.","PeriodicalId":328922,"journal":{"name":"2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115078890","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}
Pub Date : 2021-03-22DOI: 10.1109/ICAACCA51523.2021.9465333
B. Peralta, Jorge Salazar, M. Lévano, O. Nicolis
Currently the high rates of university dropouts and low graduation are social problems that are very relevant in Chilean society. Predicting these events can allow institutions to take action to avoid them. The typical prediction models based on machine learning are capable of making reliable predictions, however they do not allow to understand the causality that originates both events, which could help to take better actions. This work proposes to find, analyze and weigh the causal relationships that allow predicting whether a student will drop out or will graduate according to the information available using a framework with Bayesian networks. The study is based on real data from the Universidad Católica de Temuco in Chile collected over three years. The results reveal variables and relevant relationships according the opinion of human experts, which suggest that the proposed model provides better capabilities to represent the causality of university dropout and graduation. From the results we believe that it is feasible to design better retention policies and timely degree at a university.
目前，高大学辍学率和低毕业率是智利社会非常相关的社会问题。预测这些事件可以让机构采取行动来避免它们。基于机器学习的典型预测模型能够做出可靠的预测，但是它们不允许理解导致这两个事件的因果关系，这可能有助于采取更好的行动。这项工作建议找到、分析和权衡因果关系，这些因果关系允许根据使用贝叶斯网络框架的可用信息预测学生是否会辍学或毕业。这项研究是基于智利特穆科大学(Católica de Temuco)三年多来收集的真实数据。结果表明，该模型能够较好地反映大学辍学与毕业的因果关系。从结果来看，我们认为设计更好的留人政策和及时授予权是可行的。
{"title":"A causal modelling for desertion and graduation prediction using Bayesian networks: a Chilean case","authors":"B. Peralta, Jorge Salazar, M. Lévano, O. Nicolis","doi":"10.1109/ICAACCA51523.2021.9465333","DOIUrl":"https://doi.org/10.1109/ICAACCA51523.2021.9465333","url":null,"abstract":"Currently the high rates of university dropouts and low graduation are social problems that are very relevant in Chilean society. Predicting these events can allow institutions to take action to avoid them. The typical prediction models based on machine learning are capable of making reliable predictions, however they do not allow to understand the causality that originates both events, which could help to take better actions. This work proposes to find, analyze and weigh the causal relationships that allow predicting whether a student will drop out or will graduate according to the information available using a framework with Bayesian networks. The study is based on real data from the Universidad Católica de Temuco in Chile collected over three years. The results reveal variables and relevant relationships according the opinion of human experts, which suggest that the proposed model provides better capabilities to represent the causality of university dropout and graduation. From the results we believe that it is feasible to design better retention policies and timely degree at a university.","PeriodicalId":328922,"journal":{"name":"2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116499069","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}
Pub Date : 2021-03-22DOI: 10.1109/ICAACCA51523.2021.9465233
G. Díaz, O. Nicolis, B. Peralta
Automatic visual object recognition has gained great popularity in the world and is successfully applied to various areas such as robotics, security or commerce using deep learning techniques. Training in machine learning models based on deep learning requires an enormous amount of supervised data, which is expensive to obtain. An alternative is to use semi-supervised models as co-training where the views given by deep networks are differentiated using models that incorporate lateral information from each training object. In this document, we describe and test a co-training model for deep networks, adding as auxiliary inputs to self-supervised network features. The results show that the proposed model managed to converge using a few dozen iterations, exceeding 2 % in precision compared to recent models. This model, despite its simplicity, manages to be competitive with more complex recent works. As future work, we plan to modify deep self-supervised networks to increase diversity in co-training learning.
{"title":"Visual recognition incorporating features of self-supervised models for the use of unlabelled data","authors":"G. Díaz, O. Nicolis, B. Peralta","doi":"10.1109/ICAACCA51523.2021.9465233","DOIUrl":"https://doi.org/10.1109/ICAACCA51523.2021.9465233","url":null,"abstract":"Automatic visual object recognition has gained great popularity in the world and is successfully applied to various areas such as robotics, security or commerce using deep learning techniques. Training in machine learning models based on deep learning requires an enormous amount of supervised data, which is expensive to obtain. An alternative is to use semi-supervised models as co-training where the views given by deep networks are differentiated using models that incorporate lateral information from each training object. In this document, we describe and test a co-training model for deep networks, adding as auxiliary inputs to self-supervised network features. The results show that the proposed model managed to converge using a few dozen iterations, exceeding 2 % in precision compared to recent models. This model, despite its simplicity, manages to be competitive with more complex recent works. As future work, we plan to modify deep self-supervised networks to increase diversity in co-training learning.","PeriodicalId":328922,"journal":{"name":"2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134203988","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}
Pub Date : 2021-03-22DOI: 10.1109/ICAACCA51523.2021.9465323
R. G. Orozco
In a proposed Observer-Controller Feedback Configuration (OCFC), a class of proper multivariable causal Linear Time-Invariant (LTI) square systems with a detectable and stabilizable realization, is considered. This configuration is based on pseudo-inverses of the input and output matrices, as well as linear robust pre-compensator $K_{1}(s)$ and dual post-compensator $K_{2}(s)$ stabilizing a full actuation full information plant. $K_{1}(s)$ and $K_{2}(s)$ are low-complexity controllers that belong to the Family of All Stabilizing Controllers (FASC) and their free control parameters are selected to achieve strong stability. The separation principle is fulfilled, and necessary and sufficient stability conditions are provided for the overall system to achieve a stable closed-loop system and stable controller. An algebraic approach is used to find these stability conditions that are useful for the pole placement control problem. A simulation of a mechanical system is used to demonstrate the findings.
在一种被提出的观察者-控制器反馈配置(OCFC)中，考虑了一类具有可检测和可稳定实现的适当多变量因果线性时不变(LTI)平方系统。该结构基于输入和输出矩阵的伪逆，以及线性鲁棒预补偿器K_{1}(s)$和对偶后补偿器K_{2}(s)$来稳定全致动全信息对象。$K_{1}(s)$和$K_{2}(s)$是低复杂度控制器，属于所有稳定控制器族(Family of All stabilization controllers, FASC)，它们的自由控制参数被选择以达到强稳定性。实现了分离原则，为整个系统实现稳定的闭环系统和稳定的控制器提供了必要和充分的稳定条件。用代数方法求出了这些稳定条件，这些条件对极点放置控制问题是有用的。一个机械系统的模拟被用来证明这些发现。
{"title":"Strong stability for multivariable LTI systems","authors":"R. G. Orozco","doi":"10.1109/ICAACCA51523.2021.9465323","DOIUrl":"https://doi.org/10.1109/ICAACCA51523.2021.9465323","url":null,"abstract":"In a proposed Observer-Controller Feedback Configuration (OCFC), a class of proper multivariable causal Linear Time-Invariant (LTI) square systems with a detectable and stabilizable realization, is considered. This configuration is based on pseudo-inverses of the input and output matrices, as well as linear robust pre-compensator $K_{1}(s)$ and dual post-compensator $K_{2}(s)$ stabilizing a full actuation full information plant. $K_{1}(s)$ and $K_{2}(s)$ are low-complexity controllers that belong to the Family of All Stabilizing Controllers (FASC) and their free control parameters are selected to achieve strong stability. The separation principle is fulfilled, and necessary and sufficient stability conditions are provided for the overall system to achieve a stable closed-loop system and stable controller. An algebraic approach is used to find these stability conditions that are useful for the pole placement control problem. A simulation of a mechanical system is used to demonstrate the findings.","PeriodicalId":328922,"journal":{"name":"2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA)","volume":"348 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134326118","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}
Pub Date : 2021-03-22DOI: 10.1109/ICAACCA51523.2021.9465250
G. Conte, F. Marques, Claudio Garcia
This work demonstrates the design and compares the performance of two different digital control techniques for a modeled pneumatic diaphragm valve. The valve model is derived using first-principles modeling, the Karnopp friction model and approximates the I/P converter dynamics with a first order filter. The digital PID and LQR controllers were chosen to compensate the valve friction. A proposed contribution is to implement a digital LQR control using the Bryson rule and the Pincer technique to tune the matrices Q and R based on requirements response, maximum deviation of states variables and control effort. The robustness of the LQR controller compared to the PID controller is presented in this paper.
{"title":"LQR and PID Control Design for a Pneumatic Diaphragm Valve","authors":"G. Conte, F. Marques, Claudio Garcia","doi":"10.1109/ICAACCA51523.2021.9465250","DOIUrl":"https://doi.org/10.1109/ICAACCA51523.2021.9465250","url":null,"abstract":"This work demonstrates the design and compares the performance of two different digital control techniques for a modeled pneumatic diaphragm valve. The valve model is derived using first-principles modeling, the Karnopp friction model and approximates the I/P converter dynamics with a first order filter. The digital PID and LQR controllers were chosen to compensate the valve friction. A proposed contribution is to implement a digital LQR control using the Bryson rule and the Pincer technique to tune the matrices Q and R based on requirements response, maximum deviation of states variables and control effort. The robustness of the LQR controller compared to the PID controller is presented in this paper.","PeriodicalId":328922,"journal":{"name":"2021 IEEE International Conference on Automation/XXIV Congress of the Chilean Association of Automatic Control (ICA-ACCA)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132575973","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}
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