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This paper presents "SimPlayGround" - a framework for the stimulative evaluation of reactive and proactive power-management approaches in distributed energy harvesting systems. Our simulation framework combines the simulation of wireless communication, the behavior of reversible power supplies and the dynamics of power consumption. It supports models of the environmental power and energy...
Smart Homes and Domotic Environments are promising to revolutionize the daily human life providing users with increased care, adaptability and safety. However, to fully exploit their potential, in everyday life, suitable design and verification tools must be available, allowing architects and designers to correctly implement their ideas and to verify the effects of designed policies on real world...
Domain Specific Modeling brings the problem of simulator differences in simulation. Model Transformation and Co-Simulation are used to solve the problem. Compared to Model Transformation, Co-Simulation integrates the different simulations without the loss of model features. In this paper, we present a general framework supporting Co-Simulation for Base Object Model (BOM) and Discrete EVent System...
The purpose of this paper is to present a new approach of model reference adaptive controller for distributed power supply using a power turbine generator (PTG) with an accurate model on shipboard that is employed by an identification method on the basis of an overall system model. The proposed controller is evaluated by comparing the conventional controller. As a result, the limit speed overshooting...
The paper presents model predictive control solutions for a servosystem consisting of an electromagnetic actuator. Two solutions are proposed in this paper on the basis of one-step-ahead and multi-step-ahead quadratic objective functions. The simulation results support the development of solutions and offer conclusions concerning the advantages of the solutions.
This paper presents a new architecture for MASCEM, a multi-agent electricity market simulator. The main focus is the MASCEM ability to provide the means to model and simulate Virtual Power Producers (VPP). VPPs are represented as a coalition of agents, with specific characteristics and goals. VPPs can reinforce the importance of distributed generation technologies, mainly based on renewable energy...
This paper presents detailed models and simulators for an electrical on-board marine network. A one machine network is considered, and loads are described, initially, as equivalent RL circuits based on active and reactive powers, which results in a 5th order dynamic system. Then a more refined model with capacitances is proposed, which results in a 9th order dynamic system. This model represents the...
This paper presents an agent model of the dynamics of a humanpsilas functional state in relation to task performance and environment. It can be used in agent systems that support humans in demanding circumstances. Simulation experiments under different parameter settings pointed out that the model is able to produce realistic behaviour of different types of personalities. Moreover, by a mathematical...
Automatic steering control has a direct impact on satisfaction of various vehicle performance requirements including obstacle avoidance, lane tracking accuracy, and passenger comfort. The presence of unknown vehicle dynamics in steering applications requires a robust control design potentially reducing the unexpected effects of uncertain driving conditions and minimizing vehicle path deviations in...
The paper addresses the problem of creating a comprehensive fault injection environment, which integrates and improves various simulation and supplementary functions. This is illustrated with experimental results.
The microturbine is a complex thermal dynamic model. It is impossible to achieve accurate control because of its uncertainty and nonlinearity. In order to realize its steady control and fully exert its advantages among the distributed generation, the auto disturbance rejection control is introduced. Based on the feedback of rotational speed, extended-state observer is established. Also the controller...
This paper describes a comparative analysis between two topologies of operational amplifiers to design a 40 MS/s 12-bit pipeline analog to digital converter (ADC). The analysis includes AC and transient simulation to select the proper topology. This ADC is implemented in a 0.35 mum AMS CMOS technology with 3.3 V single power supply. The capacitors and selected operational amplifiers were scaled for...
The International Technology Roadmap for Semiconductors (ITRS) reports about the increasing divergence between what technological advances afford (in terms of the number of transistors on a single chip) and the capability to design these complex chips: the ldquoDesign Gaprdquo. The chip design industry evolved into very sophisticated and complex processes needing managerial approaches to master them...
Because of the strong non-linearity and uncertainty, the dynamics restraints of autopilots, as well as the effects of wave disturbances, designing a high performance ship course controller is always a difficult work. This paper presents a design of the ship course auto disturbance rejection controller (ADRC) based on the nonlinear mathematical model of ship course locomotion with autopilot restrictions...
Tracking reentry vehicle with strong maneuvers on-line is a challenging task. The key is to develop suitable dynamic models and estimation methods. Two kinds of modeling methods are discussed for reentry tracking, and the unscented filter (UKF) is introduced to the nonlinear tracking system. To reduce the computational load, three simplifications of UKF are developed. Furthermore, the feasibility...
The ever changing demands on computational resources has information systems managers looking for solutions that are more flexible. Using a ldquobigger boxrdquo that has more and faster processors and permanent storage or more random access memory (RAM) is not a viable solution as the system usage patterns vary. In order for a system to handle the peak load adequately, it will go underutilized much...
In this paper, we study bandwidth management of a wireless/optical based access/metro network in support of voice and data services. For voice services, we use a finite state Markov Chain to estimate the blocking probability of voice circuits over an Adaptive modulation and coding wireless channel, as a function of the channel parameters. For data services, we evaluate a rate matching and a buffer...
In this paper, we propose an adaptive pacing scheme at the link layer for IEEE 802.11 based multihop wireless networks. Our objective is to improve the performance of higher layer protocols without any modifications to them. Our adaptive pacing scheme estimates the four-hop transmission delay in the network path without incurring any additional overheads, and accordingly paces the packets to reduce...
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