In this paper, a control methodology is proposed to address the problem of energy management in hybrid ships in the presence of disturbances applied by the surrounding environment and taking the uncertainties within t...
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In this paper, a control methodology is proposed to address the problem of energy management in hybrid ships in the presence of disturbances applied by the surrounding environment and taking the uncertainties within the ship model into account. Nonlinear Robust Tube-Based Model Predictive control (NRTB-MPC) is adopted to controlthe ship speed and calculate the demanded energy for propelling the ship. At the same time, a conventional MPC approach is proposed to track the demanded energy and determine the optimal split between different energy sources. Simulation experiments using a hybrid ship system illustrate the potential of the approach. (C) 2016, ifac (International Federation of Antomatic control) Hosting by Elsevier Ltd. All rights reserved.
In this paper a simplified dynamic analysis of a cargo ship using simulation and modelling are presented. Provided with mathematical equations dynamics of ship motion characteristics with several maneuvering capabilit...
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In this paper a simplified dynamic analysis of a cargo ship using simulation and modelling are presented. Provided with mathematical equations dynamics of ship motion characteristics with several maneuvering capabilities are demonstrated with MATLAB & SIMULINK as simulation tool. the equations extended with acting thrust, resistance, steering and ruder forces are demonstrated for several maneuvers like on straight track coasting from full ahead to stop, turning actions A numerical application of fast time simulations on a freighter ship is given with graphical representations. Furthermore a simplified model for rolling motion of ship is introduced and some examples are simulated to explain the general effects of stability and wave parameters. the relation of these results to the more practical use for decision making to avoid resonance effects of ship in waves by loading operations or speed/course changes is demonstrated by means of simulation tool. (C) 2016, ifac (International Federation of Antomatic control) Hosting by Elsevier Ltd. All rights reserved.
In the change from assisted to highly automated driving, the precise knowledge of the transition between "Driver control Mode" and "Vehicle control Mode" and reliable monitoring of driver vehicle c...
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In the change from assisted to highly automated driving, the precise knowledge of the transition between "Driver control Mode" and "Vehicle control Mode" and reliable monitoring of driver vehicle control is of crucial importance. the central part is the modelling and identification of the driving behaviour. On this basis, adaptive functions leading to higher customer acceptance and therefore sustainable market penetration of ADAS and automated driving functions can be developed on the one hand. On the other, aspects of controllability affect the classification in terms of functional safety levels with regard to the validation in automated driving scenarios. the paper deals withthree relevant aspects: objective monitoring of driver characteristics, adaptive function design using lateral control in lane keeping scenarios as an example and controllability. taking longitudinal control when following another vehicle as an example. (C) 2016, ifac (International Federation of Antomatic control) Hosting by Elsevier Ltd. All rights reserved.
this paper introduces simulation model that can be used designs and controlsystems for hybrid electric vehicles (HEVs). the work involves a novel simulating platform, developed in Simulink, where each component of a ...
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this paper introduces simulation model that can be used designs and controlsystems for hybrid electric vehicles (HEVs). the work involves a novel simulating platform, developed in Simulink, where each component of a series HEV is developed using a first-principles approach in a modular fashion, validated by available experimental data and then integrated to form a coupled nonlinear dynamic model. the vehicle model is capable to act as a platform for the design of supervisory controlsystems (SCSs) that optimize the energy flow in the powertrain. Simulations with two distinct SCSs and two driving cycles are used to analyze the vehicle performance under varying driving and operating conditions. the results demonstrate the applicability of the model for realistic prediction of both vehicle behavior and component energy losses, design optimization and control system design. (C) 2016, ifac (International Federation of Automatic control) Hosting by Elsevier Ltd. All rights reserved.
the high-redundancy actuator concept that is inspired by biomimetic is an approach to fault tolerant actuator that aims to provide fault tolerance using relatively large numbers of small actuation elements. the actuat...
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the high-redundancy actuator concept that is inspired by biomimetic is an approach to fault tolerant actuator that aims to provide fault tolerance using relatively large numbers of small actuation elements. the actuation elements are assembled in parallel and series configurations to form a single actuator that has intrinsic fault tolerance. During normal operations, it is possible that some of these elements are operational and some are faulty. In this situation, the high-redundancy actuator will still work, but with graceful degradation. this paper discusses the modelling aspect of the high-redundancy actuator that consists of 12 actuation elements based on linear electromechanical actuation technology. Simulation results are validated with real-time experimental results using both a single actuator and the full high-redundancy actuator in open-loop and closed-loop. (C) 2016, ifac (International Federation of Automatic control) Hosting Elsevier Ltd. All rights reseirved.
In this study, design and implementation of control system of a vertical take-off and landing (VTOL) unmanned aerial vechicle (UAV) with level flight capability is considered. the platform structure includes both mult...
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In this study, design and implementation of control system of a vertical take-off and landing (VTOL) unmanned aerial vechicle (UAV) with level flight capability is considered. the platform structure includes both multirotor and fixed-wing (FW) conventional aircraft control surfaces: therefore named as VTOL-FW. the proposed method includes implementation of multirotor and airplane controllers and design of an algorithm to switch between them in achieving transitions between VTOL and FW flight modes. thus, VTOL-FW UAV's flight characteristics are expected to be improved by enabling agile maneuvers, increasing survivability and exploiting full flight envelope capabilities. (C) 2016, ifac (International Federation of Antomatic control) Hosting by Elsevier Ltd. All rights reserved.
Sophisticated numerical models are created nowadays for the continuous casting of steel, partly thanks to the rapid development of information technology. these models are based on the numerical solutions of nonlinear...
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Sophisticated numerical models are created nowadays for the continuous casting of steel, partly thanks to the rapid development of information technology. these models are based on the numerical solutions of nonlinear partial differential equations describing the dynamics of modelled phenomena. Such distributed parameter numerical models used as "software sensors" offer the possibility to controlthe secondary cooling process. However, in current engineering practice the control synthesis is solved by lumped parameter systems approach. Tins paper shows how to solve the control synthesis problem based on distributed parameter system approach, using widely available software products for numerical modelling of continuous casting of steel combined with algorithms for control of lumped and distributed parameter systems. (C) 2016, ifac (International Federation or Antomatie (control) Hosting by Filsevier Ltd. All rights reserved.
Set theory and invariant sets are the key ingredients used in this paper to address the control problem of general anesthesia. Boththe induction phase, corresponding to the administration of an open loop bolus dose, ...
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Set theory and invariant sets are the key ingredients used in this paper to address the control problem of general anesthesia. Boththe induction phase, corresponding to the administration of an open loop bolus dose, and the maintenance phase of the depth of hypnosis during the surgical operation are considered. the obtained control results to emulate the multi -phase control law used in practice.
In this study, an optimal autopilot algorithm is developed for 3D motion of SAGA which is an unmanned underwater survey vehicle. Firstly, a nonlinear mathematical model for SAGA is obtained. the structure of the mathe...
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In this study, an optimal autopilot algorithm is developed for 3D motion of SAGA which is an unmanned underwater survey vehicle. Firstly, a nonlinear mathematical model for SAGA is obtained. the structure of the mathematical model of the vehicle comes from a Newton-Euler formulation. the resultant nonlinear system is then controlled by PID controllers. these PID controllers arc designed for 3D motion which is realized by a suitable combination of right, left and vertical thrusters. the optimal control problem is that the vehicle is supposed to reach the desired position and rotation with desired velocity by consuming minimum energy. this problem is solved with a genetic algorithm. All of this study is performed in a Matlab/Simulink environment. (C) 2016, ifac (International Federation of Automatic control) Hosting by Elsevier Ltd. All rights reserved.
the development of a Virtual Laboratory for controlsystems simulation is presented in this paper. A mechanistic quadrotor model was created using existing theory and a feedback controller was applied for altitude and...
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the development of a Virtual Laboratory for controlsystems simulation is presented in this paper. A mechanistic quadrotor model was created using existing theory and a feedback controller was applied for altitude and coordinate control. the simulation environment was built on a transparent modelling platform that allowed the users to easily modify the controller parameters. the human machine interface employed both two and three dimensional graphic displays enabling real-time monitoring of the quadrotor's trajectory. the Virtual Laboratory was modulated for usage by multiple student groups. Two example experiments are presented in order to demonstrate the type of control simulations that may be carried out in this Virtual Laboratory. the results from these experiments indicate that this Virtual Laboratory may be easily integrated into control and simulation courses and projects for undergraduate engineering students. (C) 2016, ifac (International Federation of Automatic control) Hosting by Elsevier Ltd. All rights reserved.
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