the heat pump system by using earth energy is increasing very rapidly. In this paper, by studying the underground heat exchanger heat transfer mode, the computing platform for ground source heat pump system was establ...
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ISBN:
(纸本)9783038351658
the heat pump system by using earth energy is increasing very rapidly. In this paper, by studying the underground heat exchanger heat transfer mode, the computing platform for ground source heat pump system was established. through a engineering case, the influence character of the circulation flow velocity in ground heat exchangers on the fluid temperature, the heat pump power consumption, and the length of system were analyzed, which provide an approach for systemengineering design and operation prediction, and for the thermodynamic analysis of performance of system year by year and prospective study to guide the engineering practice.
If a dynamic system is influenced by uncertain factors, it can be described by an uncertain differential equation. Uncertain optimal control problem is an optimization problem based on uncertain differential equations...
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ISBN:
(纸本)9783642549274;9783642549267
If a dynamic system is influenced by uncertain factors, it can be described by an uncertain differential equation. Uncertain optimal control problem is an optimization problem based on uncertain differential equations. For an uncertain optimal control model, if the switching function that determines the values of the control function is consistently zero within a time interval, then the model belongs to a singular case. Inspired by Johnson and Gibson's work, this paper establishes an approach for the solutions of a singular uncertain optimal control model. For a class of uncertain optimal control model where the drift term of the uncertain system and objective function are both linear in control variables, the singular optimal control function may be solved by making use of the fact that the optimal value of the Hamiltonian function is zero in a singular control interval. An example is used to show that the proposed method is efficient.
this paper presents the simulation and the implementation of a model of a neural network applied to a multiagent system by using the Neuroph framework. this tool enables several tests to be carried out and verify whic...
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ISBN:
(纸本)9783642549274;9783642549267
this paper presents the simulation and the implementation of a model of a neural network applied to a multiagent system by using the Neuroph framework. this tool enables several tests to be carried out and verify which structure is the best structure of our neural network for a specific application. In our case, we simulated the neural network for a sun-tracking controlsystem in a solar farm. Initial implementation shows good results in performance, thereby providing an alternative to traditional solar-tracking systems.
In view of the high-power laser could make the temperature rise on the samples, this paper proposes a controller based on parameters self-tuning fuzzy PID algorithm. the controller can be not only applied to the singl...
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ISBN:
(纸本)9783642549274;9783642549267
In view of the high-power laser could make the temperature rise on the samples, this paper proposes a controller based on parameters self-tuning fuzzy PID algorithm. the controller can be not only applied to the single control object based on Fuzzy empirical formula according to the PID parameters online correcting, but also can effectively deal withthe temperature control model of LTDS uncertainly, nonlinear, time-varying, hysteresis, and so on. And in this paper, we make a simulation comparative experiment between the traditional PID control and the fuzzy adaptive PID control by using Matlab Simulink toolbox. the experiment result shows that fuzzy adaptive PID is better than the traditional control algorithm on overshoot, settling time and other performance indicators, and it can effectively improve control accuracy of the temperature controlsystem.
To describe sagging dynamics of processing stainless steel strip, the concept "equivalent elastic modulus'' is introduced in this paper. Based on which, a tension dynamic model of steel strip is then buil...
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ISBN:
(数字)9783642549274
ISBN:
(纸本)9783642549274;9783642549267
To describe sagging dynamics of processing stainless steel strip, the concept "equivalent elastic modulus'' is introduced in this paper. Based on which, a tension dynamic model of steel strip is then built. Considering the nonlinear nature and the rapid change in operating conditions of the stainless steel strip processing line, and industrial controller cannot resist disturbance effectively, a tension control method based on active disturbance rejection control (ADRC) strategy is presented. Meanwhile, the parameter tuning method for this ADRC is also proposed. Simulation results show the effectiveness of the proposed strategy.
In view of performance of multiwheel independent drive skid steering unmanned ground vehicle, this paper describes one kind of improved trajectory tracking control algorithm based on the tracking controller proposed b...
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ISBN:
(纸本)9783642549274;9783642549267
In view of performance of multiwheel independent drive skid steering unmanned ground vehicle, this paper describes one kind of improved trajectory tracking control algorithm based on the tracking controller proposed by Kanayama. the ordinate error is introduced to the design of linear velocity, so as to speed up the convergence speed. Moreover, considering the dynamic constraints of vehicle, the constrained control strategy is used to controlsystem to ensure the smooth motion of vehicle. Two PD controllers are used to do closed-loop control for linear velocity and yaw rate so as to ensure the generalized longitudinal driving force and yaw moment. the equivalent distribution method is adopted to distribute longitudinal driving force and yaw moment into the drive torque of six wheels. the simulation results are satisfied.
Based on linear active disturbance rejection control (LADRC) method, the control algorithm is designed for web tension regulation of self-developed LJF650A zero-speed splicer. the switching repeatedly working conditio...
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ISBN:
(纸本)9783642549274;9783642549267
Based on linear active disturbance rejection control (LADRC) method, the control algorithm is designed for web tension regulation of self-developed LJF650A zero-speed splicer. the switching repeatedly working conditions and varying web length make the tension control of zero-speed splicer more difficult than the general web tension control. the LADRC design can actively estimate and compensate boththe internal uncertain dynamics and external disturbances in real time. In this study, a realistic nonlinear model of zero-speed splicer for printing machine is deduced, and a fourth order linear extended state observer (LESO) is designed based on the simplified model of the accumulator. Simulations are presented and discussed for the LADRC controller, resulting with a better performance compared with decentralized PI controller.
Different controller is radically different in control effect. For the same controlled process, aimed at the puzzle of being difficult to select the controller for the incompatibility among control performance index, ...
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ISBN:
(纸本)9783642549274;9783642549267
Different controller is radically different in control effect. For the same controlled process, aimed at the puzzle of being difficult to select the controller for the incompatibility among control performance index, this paper proposes a sort of improved PSO algorithm. Based on the construction of objective function in multi-performance index parameter, the algorithm could quickly search and converge to optimizing control parameter in global optimal extremum, and single out the controller through performance comparison excellently. In the paper, it took the controller selection of excavator system as an example, designed the algorithm of multi-modal HSIC controller for excavator, and the simulation demonstrated that the HSIC-based controller could be stronger in robustness and better in dynamical and steady control quality compared with improved PID controller. the research result shows that it is reasonable and applicable to optimizing selection of controller.
the proceedings contain 31 papers. the special focus in this conference is on Model and Data engineering. the topics include: Playing with state-based models for designing better algorithms;some issues in modeling use...
ISBN:
(纸本)9783319115863
the proceedings contain 31 papers. the special focus in this conference is on Model and Data engineering. the topics include: Playing with state-based models for designing better algorithms;some issues in modeling user behavior data in systems of engagement;automated failure analysis in model checking based on data mining;a model-driven methodology approach for developing a repository of models;towards a generic framework for the initialization and the observation of socio-environmental models;context-aware verification of a cruise-controlsystem;a multi-agent based approach for composite web services simulation;model-driven generation of multi-user and multi domain choreographies for staging in multiple virtual world platforms;adapting aerial root classifier missing data processor in data stream decision tree classification;leveraging concepts and semantic relationships for language model based document retrieval;a full service approach for multimedia content retrieval;ontology-based user modeling for handicraft woman recommendation;stability assess based on enhanced information content similarity measure for ontology enrichment;algebraic graph transformations for merging ontologies;analysis of trajectory ontology inference complexity over domain and temporal rules;ontology-based context-aware SLA management for cloud computing;mapping XML documents using complex SQL data types;replicated convergent data containers;a novel multidimensional model for the OLAP on documents;scalable spectral clustering with weighted pagerank;efficient algorithm to approximate values with non-uniform spreads inside a histogram bucket;modeling a smart home for elderly;theme identification in RDF graphs and an xquery based model transformation language.
For the devices with limited computing capacity and processing time, this paper proposes a new steady-state kalman filtering method based on thresholding optimal gain. the core algorithm is about improving the updatin...
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