Pub Date : 2020-01-01DOI: 10.1109/tcst.2019.2957597
G. Mercère, A. Medvedev, D. Rivera, Caterina M. Scoglio, B. Jayawardhana
Control engineering (in the broad sense of the term) has become an important enabling technology in many areas of medicine. Prominent examples include the artificial pancreas, closed-loop anesthesia, and personalized drug dosing strategies in neurology, oncology, endocrinology, and psychiatry. It is a testament to the power of control systems that allow individualizing treatment by providing mechanisms for linking treatment goals to treatment regimens, thus achieving a desired therapeutic effect. Consequently, the arrival of control systems engineering to the clinic enables the visionary concept of "treat the patient, not the disease" technologically and economically feasible.
{"title":"Foreword Identification and Control in Biomedical Applications","authors":"G. Mercère, A. Medvedev, D. Rivera, Caterina M. Scoglio, B. Jayawardhana","doi":"10.1109/tcst.2019.2957597","DOIUrl":"https://doi.org/10.1109/tcst.2019.2957597","url":null,"abstract":"Control engineering (in the broad sense of the term) has become an important enabling technology in many areas of medicine. Prominent examples include the artificial pancreas, closed-loop anesthesia, and personalized drug dosing strategies in neurology, oncology, endocrinology, and psychiatry. It is a testament to the power of control systems that allow individualizing treatment by providing mechanisms for linking treatment goals to treatment regimens, thus achieving a desired therapeutic effect. Consequently, the arrival of control systems engineering to the clinic enables the visionary concept of \"treat the patient, not the disease\" technologically and economically feasible.","PeriodicalId":13214,"journal":{"name":"IEEE Trans. Control. Syst. Technol.","volume":"40 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78991647","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 : 2015-02-26DOI: 10.1109/TCST.2015.2389655
L. Pereira, A. Bazanella
In this brief, we propose a particular structure for resonant controllers and a tuning method of the Ziegler–Nichols type for their tuning. Performance criteria for resonant controllers are also defined. The effectiveness of the tuning rules is illustrated by their application and corresponding performance assessment in a test batch consisting of four representative classes of processes. The control performance is analyzed in detail for one particular example, shedding light on the virtues and limitations of the control structure and of the tuning method.
{"title":"Tuning Rules for Proportional Resonant Controllers","authors":"L. Pereira, A. Bazanella","doi":"10.1109/TCST.2015.2389655","DOIUrl":"https://doi.org/10.1109/TCST.2015.2389655","url":null,"abstract":"In this brief, we propose a particular structure for resonant controllers and a tuning method of the Ziegler–Nichols type for their tuning. Performance criteria for resonant controllers are also defined. The effectiveness of the tuning rules is illustrated by their application and corresponding performance assessment in a test batch consisting of four representative classes of processes. The control performance is analyzed in detail for one particular example, shedding light on the virtues and limitations of the control structure and of the tuning method.","PeriodicalId":13214,"journal":{"name":"IEEE Trans. Control. Syst. Technol.","volume":"23 1","pages":"2010-2017"},"PeriodicalIF":0.0,"publicationDate":"2015-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88141254","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 : 2012-03-01DOI: 10.1109/TCST.2011.2116790
Yun-Hong Xu, Ni Li
The following paper is a reply to the comment note titled, "Comments on 'Chattering Free Robust Control for Nonlinear Systems'," by P. Potluri. The purpose of this reply is to: 1) agree with the comment 2) discuss the potential benefit of the controller in terms of the chattering mitigation instead of chattering free; and 3) correct two typos in the original paper titled, "Chattering free robust control for nonlinear systems".
{"title":"Authors' Reply to \"Comments on 'Chattering Free Robust Control for Nonlinear Systems'\"","authors":"Yun-Hong Xu, Ni Li","doi":"10.1109/TCST.2011.2116790","DOIUrl":"https://doi.org/10.1109/TCST.2011.2116790","url":null,"abstract":"The following paper is a reply to the comment note titled, \"Comments on 'Chattering Free Robust Control for Nonlinear Systems',\" by P. Potluri. The purpose of this reply is to: 1) agree with the comment 2) discuss the potential benefit of the controller in terms of the chattering mitigation instead of chattering free; and 3) correct two typos in the original paper titled, \"Chattering free robust control for nonlinear systems\".","PeriodicalId":13214,"journal":{"name":"IEEE Trans. Control. Syst. Technol.","volume":"119 1","pages":"563"},"PeriodicalIF":0.0,"publicationDate":"2012-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77471335","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 : 2012-03-01DOI: 10.1109/TCST.2011.2120611
R. Potluri
The above paper claims that: 1) its sliding mode control does not contain any discontinuous function (or switching function) and 2) hence is chatter-free. In this letter, we present a simple counter-example to claim 1).
{"title":"Comments on \"Chattering Free Robust Control for Nonlinear Systems\"","authors":"R. Potluri","doi":"10.1109/TCST.2011.2120611","DOIUrl":"https://doi.org/10.1109/TCST.2011.2120611","url":null,"abstract":"The above paper claims that: 1) its sliding mode control does not contain any discontinuous function (or switching function) and 2) hence is chatter-free. In this letter, we present a simple counter-example to claim 1).","PeriodicalId":13214,"journal":{"name":"IEEE Trans. Control. Syst. Technol.","volume":"132 1","pages":"562"},"PeriodicalIF":0.0,"publicationDate":"2012-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78135501","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 : 2010-07-01DOI: 10.1109/TCST.2009.2030172
Sang-Min Suh
This note presents a discrete-time H∞ controller to attenuate effects of external disturbances introduced from both plant input and plant output. In this note, two stage control structure is constructed so that state variable dependent conventional controllers and H∞ loop shaping controllers are simultaneously utilized, which is a different approach from previous methods. For the loop shaping controller, a new weighting function derived from an open loop transfer function of fictitious state-feedback systems is proposed. Since the weighting function inherits implicit stability margins, sufficiently stable closed loop systems are designed, therefore well damped transient responses are achieved.
{"title":"Unified H∞ Control to Suppress Vertices of Plant Input and Output Sensitivity Functions","authors":"Sang-Min Suh","doi":"10.1109/TCST.2009.2030172","DOIUrl":"https://doi.org/10.1109/TCST.2009.2030172","url":null,"abstract":"This note presents a discrete-time H∞ controller to attenuate effects of external disturbances introduced from both plant input and plant output. In this note, two stage control structure is constructed so that state variable dependent conventional controllers and H∞ loop shaping controllers are simultaneously utilized, which is a different approach from previous methods. For the loop shaping controller, a new weighting function derived from an open loop transfer function of fictitious state-feedback systems is proposed. Since the weighting function inherits implicit stability margins, sufficiently stable closed loop systems are designed, therefore well damped transient responses are achieved.","PeriodicalId":13214,"journal":{"name":"IEEE Trans. Control. Syst. Technol.","volume":"31 1","pages":"969-975"},"PeriodicalIF":0.0,"publicationDate":"2010-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78616291","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 : 2005-10-24DOI: 10.1109/TCST.2005.854319
Shaoyuan Li, Hongbo Liu, W. Cai, Y. Soh, Lihua Xie
This paper presents the new development of the boiler-turbine coordinated control strategy using fuzzy reasoning and autotuning techniques. The boiler-turbine system is a very complex process that is a multivariable, nonlinear, slowly time-varying plant with large settling time and a lot of uncertainties. As there exist strong couplings between the main steam pressure control loop and the power output control loop in the boiler-turbine unit with large time-delay and uncertainties, automatic coordinated control of the two loops is a very challenging problem. This paper presents a new coordinated control strategy (CCS) which is organized into two levels: a basic control level and a high supervision level. Proportional-integral derivative (PID) type controllers are used in the basic level to perform basic control functions while the decoupling between two control loops can be realized in the high level. A special subclass of fuzzy inference systems, called the Gaussian partition with evenly (GPE) spaced midpoints systems, is used to self-tune the main steam pressure PID controller's parameters online based on the error signal and its first difference, aimed at overcoming the uncertainties due to changing fuel calorific value, machine wear, contamination of the boiler heating surfaces and plant modeling errors. For the large variation of operating condition, a supervisory control level has been developed by autotuning technique. The developed CCS has been implemented in a power plant in China, and satisfactory industrial operation results demonstrate that the proposed control strategy has enhanced the adaptability and robustness of the process. Indeed, better control performance and economic benefit have been achieved.
{"title":"A new coordinated control strategy for boiler-turbine system of coal-fired power plant","authors":"Shaoyuan Li, Hongbo Liu, W. Cai, Y. Soh, Lihua Xie","doi":"10.1109/TCST.2005.854319","DOIUrl":"https://doi.org/10.1109/TCST.2005.854319","url":null,"abstract":"This paper presents the new development of the boiler-turbine coordinated control strategy using fuzzy reasoning and autotuning techniques. The boiler-turbine system is a very complex process that is a multivariable, nonlinear, slowly time-varying plant with large settling time and a lot of uncertainties. As there exist strong couplings between the main steam pressure control loop and the power output control loop in the boiler-turbine unit with large time-delay and uncertainties, automatic coordinated control of the two loops is a very challenging problem. This paper presents a new coordinated control strategy (CCS) which is organized into two levels: a basic control level and a high supervision level. Proportional-integral derivative (PID) type controllers are used in the basic level to perform basic control functions while the decoupling between two control loops can be realized in the high level. A special subclass of fuzzy inference systems, called the Gaussian partition with evenly (GPE) spaced midpoints systems, is used to self-tune the main steam pressure PID controller's parameters online based on the error signal and its first difference, aimed at overcoming the uncertainties due to changing fuel calorific value, machine wear, contamination of the boiler heating surfaces and plant modeling errors. For the large variation of operating condition, a supervisory control level has been developed by autotuning technique. The developed CCS has been implemented in a power plant in China, and satisfactory industrial operation results demonstrate that the proposed control strategy has enhanced the adaptability and robustness of the process. Indeed, better control performance and economic benefit have been achieved.","PeriodicalId":13214,"journal":{"name":"IEEE Trans. Control. Syst. Technol.","volume":"2008 8","pages":"943-954"},"PeriodicalIF":0.0,"publicationDate":"2005-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91429470","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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