This paper deals with the design of model of electro-hydraulic system with failure simulation feature. The fundamental causes and effects of failures of electro-hydraulic system are summarized. Virtual Simulink model of electro-hydraulic system has been developed and implemented in compliance with performed FMEA (Failure Mode and Effects Analysis). Subsequent experimental part focuses to the simulation of selected failures on electro-hydraulic system model. The results of simulation of failures are shown in time response characteristics of monitored variables.
本文研究了具有故障仿真特征的电液系统模型的设计。总结了电液系统故障的基本原因和影响。基于FMEA (Failure Mode and Effects Analysis，失效模式与影响分析)，开发并实现了电液系统的虚拟Simulink模型。随后的实验部分重点对电液系统模型上选取的故障进行了仿真。故障模拟的结果体现在被监测变量的时间响应特性上。
{"title":"Virtual model of an electro-hydraulic system","authors":"A. Kopčeková, M. Kopček, T. Skulavik","doi":"10.1109/PC.2013.6581422","DOIUrl":"https://doi.org/10.1109/PC.2013.6581422","url":null,"abstract":"This paper deals with the design of model of electro-hydraulic system with failure simulation feature. The fundamental causes and effects of failures of electro-hydraulic system are summarized. Virtual Simulink model of electro-hydraulic system has been developed and implemented in compliance with performed FMEA (Failure Mode and Effects Analysis). Subsequent experimental part focuses to the simulation of selected failures on electro-hydraulic system model. The results of simulation of failures are shown in time response characteristics of monitored variables.","PeriodicalId":232418,"journal":{"name":"2013 International Conference on Process Control (PC)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121374731","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}
This article describes a Projection Equivalent Method (PEM) as a new approach for modeling of aircraft. PEM is a method [20] by which it is possible to obtain a mathematical model of the aerodynamic forces and moments acting on the flying machine during flight. For PEM, it is characteristic that in principle it provides an acceptable regression model of aerodynamic forces and moments, which possesses a reasonable and plausible behavior from dynamics viewpoint. The main advantage of the PEM is that it is not necessary to carry out measurements in wind tunnel for identification of model parameters. Plausible dynamic behavior of the model can be achieved by specific correction parameters, which are possible to be determined on the base of experimental data obtained during a flight of the aircraft. In this article, we present the Projective Equivalent Method, which is applied to an airship. The airship is a special flight system, which is extremely sensitive to the aerodynamic forces impact. Therefore an airship is a suitable object for the comparison of a flight mechanics model providing data calculated by PEM and sensor data from experimental flight.
{"title":"Airship aerodynamics - Modeling principle of the aerodynamic forces by PEM method","authors":"F. Jelenciak, M. Gerke, I. Masár","doi":"10.1109/PC.2013.6581377","DOIUrl":"https://doi.org/10.1109/PC.2013.6581377","url":null,"abstract":"This article describes a Projection Equivalent Method (PEM) as a new approach for modeling of aircraft. PEM is a method [20] by which it is possible to obtain a mathematical model of the aerodynamic forces and moments acting on the flying machine during flight. For PEM, it is characteristic that in principle it provides an acceptable regression model of aerodynamic forces and moments, which possesses a reasonable and plausible behavior from dynamics viewpoint. The main advantage of the PEM is that it is not necessary to carry out measurements in wind tunnel for identification of model parameters. Plausible dynamic behavior of the model can be achieved by specific correction parameters, which are possible to be determined on the base of experimental data obtained during a flight of the aircraft. In this article, we present the Projective Equivalent Method, which is applied to an airship. The airship is a special flight system, which is extremely sensitive to the aerodynamic forces impact. Therefore an airship is a suitable object for the comparison of a flight mechanics model providing data calculated by PEM and sensor data from experimental flight.","PeriodicalId":232418,"journal":{"name":"2013 International Conference on Process Control (PC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124420909","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}
The paper addresses the problem of constrained pole placement control for discrete-time linear systems. Sufficient conditions for feasibility are outlined in terms of linear matrix inequalities for a D-stable circular region in the complex ś plain. In addition, in the case of state-space control, it is proven that by this way formulated pole placement problem is equivalently uttered using an quadratic integral state constraint, being added to Lyapunov function. Finally, the proposed principle is expanded for systems with polytopic uncertainties.
{"title":"On pole placement LMI constraints in control design for linear discrete-time systems","authors":"D. Krokavec, A. Filasová","doi":"10.1109/PC.2013.6581385","DOIUrl":"https://doi.org/10.1109/PC.2013.6581385","url":null,"abstract":"The paper addresses the problem of constrained pole placement control for discrete-time linear systems. Sufficient conditions for feasibility are outlined in terms of linear matrix inequalities for a D-stable circular region in the complex ś plain. In addition, in the case of state-space control, it is proven that by this way formulated pole placement problem is equivalently uttered using an quadratic integral state constraint, being added to Lyapunov function. Finally, the proposed principle is expanded for systems with polytopic uncertainties.","PeriodicalId":232418,"journal":{"name":"2013 International Conference on Process Control (PC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129172115","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}
Heat exchange belongs to the class of basic thermal processes which occur in a range of industrial technologies, particularly in the energetic, chemical, polymer and rubber industry. The process of heat exchange is often implemented by through-flow heat exchangers. It is apparent that for an exact theoretical description of dynamics of heat exchange processes it is necessary to use partial differential equations. Heat exchange is namely a process with distributed parameters. It is also necessary to take into account its nonlinear and stochastic character. In spite of these facts, most of thermal equipment is controlled by digital modifications of PID controllers at present. This paper deals with identification of a dynamic behavior of a through-flow heat exchanger and a design of an self-tuning predictive controller for its control. The designed controller was verified by a real-time control of experimental laboratory heat exchanger.
{"title":"Identification and self-tuning predictive control of heat exchanger","authors":"V. Bobál, M. Kubalcik, P. Dostál","doi":"10.1109/PC.2013.6581412","DOIUrl":"https://doi.org/10.1109/PC.2013.6581412","url":null,"abstract":"Heat exchange belongs to the class of basic thermal processes which occur in a range of industrial technologies, particularly in the energetic, chemical, polymer and rubber industry. The process of heat exchange is often implemented by through-flow heat exchangers. It is apparent that for an exact theoretical description of dynamics of heat exchange processes it is necessary to use partial differential equations. Heat exchange is namely a process with distributed parameters. It is also necessary to take into account its nonlinear and stochastic character. In spite of these facts, most of thermal equipment is controlled by digital modifications of PID controllers at present. This paper deals with identification of a dynamic behavior of a through-flow heat exchanger and a design of an self-tuning predictive controller for its control. The designed controller was verified by a real-time control of experimental laboratory heat exchanger.","PeriodicalId":232418,"journal":{"name":"2013 International Conference on Process Control (PC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115136757","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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