Model based systems engineering(MBSE) is becoming a promising approach for the system-level design of complex mechatronics. And several MBSE tools are developed to conduct system modeling. However, the system design c...
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Model based systems engineering(MBSE) is becoming a promising approach for the system-level design of complex mechatronics. And several MBSE tools are developed to conduct system modeling. However, the system design cannot be optimized in current MBSE tools. In this study, an approach is presented to conduct the task. A set of optimization stereotype is defined at first which is used to formalize the optimization model based on the system design model. Then the design parameters and their relationships applied optimization stereotypes are extracted and transferred to construct the tool-dependent optimization model. Finally, the optimization model is solved and the results are given back and then modify the corresponding system model automatically. In this paper, Magic Draw is used to model the whole system whereas Matlab optimizer is used for optimization. The combustion engine is chosen as the example to illustrate the proposed approach.
We use agent-based simulations to study emergency evacuation in buildings, and design the interior layout of buildings. We build an abstract scene for the first floor of an emporium in Changsha city in China. The scen...
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We use agent-based simulations to study emergency evacuation in buildings, and design the interior layout of buildings. We build an abstract scene for the first floor of an emporium in Changsha city in China. The scene includes eight rooms and various objects. We build grid-based environmental models and heterogeneous agent models. Then we conduct simulation experiments to evaluate the performance of two scenes for emergency evacuation, initial scene and optimized scene. Through statistic analysis, we conclude that optimized scene performs better for emergency evacuation than initial scene.
The current product configuration methods can only be applied to the situation when the configuration information is specific or *** order to address this problem, a new multi-objective optimization approach to config...
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The current product configuration methods can only be applied to the situation when the configuration information is specific or *** order to address this problem, a new multi-objective optimization approach to configuration design with the consideration of several types of uncertain information was *** uncertain configuration information was uniformly described with interval *** on optimizing the performance, cost and term of configured products, three mathematical models was established, and some adaptations were made to these models according to the interval number.A multi-objective optimization model was generated by integrating the three *** non-dominated sorting genetic algorithm Ⅱ was used to solve the model and a Pareto optimal set of product configuration schemes was obtained.A general optimum selection method was put forward based on the fuzzy set theory, and the optimization sequence of the Pareto solutions can be founded using the *** proposed approach can effectively deal with the problem of product configuration optimization under uncertain information.
The bivariate copula potentiality for measuring risk dependencies due to occurrence of two natural disasters is *** bivariate copula essentials are *** copula dependence measures(concordance,Kendall's tau,Spearman...
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The bivariate copula potentiality for measuring risk dependencies due to occurrence of two natural disasters is *** bivariate copula essentials are *** copula dependence measures(concordance,Kendall's tau,Spearman's rho,positively quadrant dependent,tail dependence)are *** results about the measuring risk dependencies can support the stakeholders to take more informed decisions regarding the efficient allocation of the available funding for the improvement of risk management with respect to natural disasters.A concept for implementing the bivariate copula models as a part of a Web integrated information system for risk management of natural disasters is outlined.
Disappearing mould casting is a new accurately processes with nearly free margin and precision forming, in which is no modulus, no parting, no sand core, so the casting without splash, burr and taper angle. It can imp...
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Disappearing mould casting is a new accurately processes with nearly free margin and precision forming, in which is no modulus, no parting, no sand core, so the casting without splash, burr and taper angle. It can improve the dimensional accuracy of the core portfolio for complex surface of the key compose of the disappearing mould. It has completed the design and manufacturing of these by the three-dimensional CAD/CAM technology, and obtains a series of effective methods and experience for the development of the products. The researched results have important directive to production practices for the design and machining process for the expendable pattern casting.
Optimizing system parameters such as energy is a significant issue in robotics. System modeling is an effective factor to reach this goal. In robot modeling, a DC motor is mostly modeled as a torque source. In this pa...
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The impedance- & admittance control is a common technique in robotics and other applications. The force or momentum should be handled in a more sensitive way to fulfill several demands. Human machine interfaces (H...
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As an important area of the high-tech research, robotics technology is attached importance by governments. It has become important equipment in manufacturing of a country's manufacture level and technological leve...
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ISBN:
(纸本)9780769542966
As an important area of the high-tech research, robotics technology is attached importance by governments. It has become important equipment in manufacturing of a country's manufacture level and technological level. Robot kinematics analysis is the basis of robot motion control. According to the specific characteristics of MOTOMAN-HP20 manipulator, this paper established a kinematics model and set up the link coordinate with D-H theory. Meanwhile, it put forward a trajectory planning of the movement with specific motion control method.
Motion in our macroscopic world is ruled by mass-related, volumetric forces, mostly provoked by inertia and gravity. In minor dimensions, surface forces gain growing importance. Downscaling of robots thus offers new o...
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This paper addresses the control of angular velocity of a rigid body with two actuators. Based on the feedback transformed system, a discontinuous feedback control law is proposed with finite time terminal sliding mod...
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