the paper presents comparison between two popular predictive control algorithms DMC and PFC. General description of both algorithms are presented in details for FOPDT (First Order Plus Dead Time) dynamics. Heating pro...
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ISBN:
(纸本)9781467355087;9781467355063
the paper presents comparison between two popular predictive control algorithms DMC and PFC. General description of both algorithms are presented in details for FOPDT (First Order Plus Dead Time) dynamics. Heating process with heat source and heat exchanger was used as an example control plant for testing both algorithms. Design of controllers and tuning procedures are presented. Results of control and performance tests are included as well as conclusion remarks on practical aspects of implementation of the algorithms.
the paper presents the proposition of a numerical model of the human circulatory system modification for the purpose of physical reproduction of conditions prevailing in the apex of the heart on a hybrid simulator. th...
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ISBN:
(纸本)9781467355087;9781467355063
the paper presents the proposition of a numerical model of the human circulatory system modification for the purpose of physical reproduction of conditions prevailing in the apex of the heart on a hybrid simulator. this is a physical-numerical stand which performs a generation of hydraulic conditions occurring in the selected points of circulatory system. However, so far, there was no possibility of reproduction the apex of the heart point. the paper presents the nature of the problem and suggest solution. the results of simulation tests and analysis of assumptions correctness are shown. Description of further development works is included.
Most existing vision-based methods for gaze tracking need a tedious calibration process. In this process, subjects are required to fixate on a specific point or several specific points in space. However, it is hard to...
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ISBN:
(纸本)9781424479276
Most existing vision-based methods for gaze tracking need a tedious calibration process. In this process, subjects are required to fixate on a specific point or several specific points in space. However, it is hard to cooperate, especially for children and human infants. In this paper, a new calibration-free gaze tracking system and method is presented for automatic measurement of visual acuity in human infants. As far as I know, it is the first time to apply the vision-based gaze tracking in the measurement of visual acuity. Firstly, a polynomial of pupil center-cornea reflections (PCCR) vector is presented to be used as the gaze feature. then, Gaussian mixture models (GMM) is employed for gaze behavior classification, which is trained offline using labeled data from subjects with healthy eyes. Experimental results on several subjects show that the proposed method is accurate, robust and sufficient for the application of measurement of visual acuity in human infants.
One of the classical problems in control theory is the robust output regulation problem. the output of a system is required to asymptotically follow a given reference signal, despite disturbance signals and perturbati...
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ISBN:
(纸本)9781467355087;9781467355063
One of the classical problems in control theory is the robust output regulation problem. the output of a system is required to asymptotically follow a given reference signal, despite disturbance signals and perturbations in the system's parameters. Wonham & Francis, and Davison on the other hand, developed independently the theory and construction of finite-dimensional robust controllers. Wonham's approach was based on geometric theory while Davison introduced a combination of servo-compensator and stabilizing compensator. they discovered the famous Internal Model Principle, which states that a robust feedback controller must contain a copy of the dynamics of the exosystem generating the reference and disturbance signals.
the problem of collective behavior of autonomous agents is discussed. Based on state dependent communication graphs we analyze a family of non-linear flocking models by establishing sufficient initial conditions so as...
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ISBN:
(纸本)9781467355087;9781467355063
the problem of collective behavior of autonomous agents is discussed. Based on state dependent communication graphs we analyze a family of non-linear flocking models by establishing sufficient initial conditions so as connectivity and thus asymptotic flocking is ensured. We discuss models with non-linear uniformly bounded connection rates with and without delays.
the paper presents a new approach, based on an algebraic-logical meta-models (ALMM), to solving NP - hard manufacturing problems. there is considered the flow-shop manufacturing problem with time limits, the quality c...
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ISBN:
(纸本)9781467355087;9781467355063
the paper presents a new approach, based on an algebraic-logical meta-models (ALMM), to solving NP - hard manufacturing problems. there is considered the flow-shop manufacturing problem with time limits, the quality control, removing of manufacturing defects on an additional repair machine and re-treatment of task in technological route. Proposed solution consist in switching of original algebraic-logical model to model with modified parameters when quality defects appear. In particular algebraic-logical model of flow-shop manufacturing problem with time limits and modified model with additional repair machine are proposed. Furthermore, the switching function from original model into modified model is given.
In this paper, the translational accuracy performance of two algorithms that allow the pose of an Unmanned Aerial Vehicle (UAV) to be estimated is reported, based on preliminary data. the two algorithms are the 2D Hom...
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ISBN:
(纸本)9781467355087;9781467355063
In this paper, the translational accuracy performance of two algorithms that allow the pose of an Unmanned Aerial Vehicle (UAV) to be estimated is reported, based on preliminary data. the two algorithms are the 2D Homography and the 3D Iterative Closest Point (ICP) algorithm. Performance is measured against real image data taken with a digital Nikon D70 camera, with lens set at 3 different focal lengths. It is shown that best accuracy is achieved withthe 3D Iterative Closest Point algorithm and that focal length itself has little or no bearing on this performance. Calibration errors may impact accuracy.
this paper presents the design and real-time implementation of a Type-2 Fuzzy Logic Proportional-Integral Controller (T2FLPIC) to control the position of a DC servomotor, which controls a robotic arm. Numerous type-2 ...
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ISBN:
(纸本)9781467355087;9781467355063
this paper presents the design and real-time implementation of a Type-2 Fuzzy Logic Proportional-Integral Controller (T2FLPIC) to control the position of a DC servomotor, which controls a robotic arm. Numerous type-2 defuzzification methods were implemented and judged against each other. A comparative analysis withthe conventional Type-1 Fuzzy Logic Proportional-Integral Controller (T1FLPIC) and a PID controller demonstrates that the T2FLPIC has much improved performance than the T1FLPIC and the PID controller. this improvement is evident when it comes to handling of system disturbances and noise.
Designing, developing, and maintaining control software is often a complex and difficult task, especially in larger projects. the paper presents a concept of applying the Model-Driven Development approach with SysML m...
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ISBN:
(纸本)9781467355087;9781467355063
Designing, developing, and maintaining control software is often a complex and difficult task, especially in larger projects. the paper presents a concept of applying the Model-Driven Development approach with SysML modeling to the IEC 61131-3 development process. Four types of diagrams are used to model different aspects of the system: Requirements Diagram, Package Diagram, Block Definition Diagram, and State Machine Diagram. the models represent POUs and their requirements, resources, and tasks. Some POUs can be modeled as state machines as well. the SysML diagrams can be used to generate code templates for the implementation in IEC 61131-3 languages, such as ST or FBD. the paper also describes an extension to the CPDev engineering environment, which integrates the proposed SysML modeling with programming and execution of IEC 61131-3 software. the example of an engine and pump control system is presented to show various stages of the proposed approach.
Robots have capabilities emulating senses as they can now see, hear and touch, but the sense of smell is just starting to be implemented in mobile applications. the principal task of a smell capable robot is the odor ...
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