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Article deals with the problem of simulation modeling of robust control system for nonlinear plants with the input signal saturation, functioning under a priori uncertainty conditions and in the presence of several statement delays. With the help of computational experiments, the quality of the control system operation under various initial conditions of the controlled plant is illustrated.
Petri nets prepare an effective method of computing minimal siphons and elementary siphons based on the concept of initial resource assignment on liveness for the class of generalized Petri nets, namely S4PR. At the point when consideration concentrates on the utilization of framework assets to flexible manufacturing system (FMS) can be viewed as an exceptional class of simultaneous of resource allocation...
In this paper we show how the open standard modeling language Modelica can be effectively used to support model-based design and verification of cyber-physical systems stemming from complex power electronics systems. To this end we present a Modelica model for a Distributed Maximum Power Point Tracking system along with model validation results.
This paper presents some results of development of model of high voltage direct current system back-to-back link. The model based on concept of hybrid simulation, comprising three level of simulation: physical, analog and digital. The obtained results, including steps on the regulation references, recovery from severe perturbations in two-machine alternative current networks and ect, prove the advantages...
In the first part of this paper we present the discretization method of fractional order system. In the second part, predictive control based on a fractional state-space model will be presented. In the third part we will present simulation results.
The paper presents a solution for the 18O isotope separation process control. The separation process is a non-linear one and it is modeled using the fractional-order systems theory, in order to obtain a higher accuracy. Based on the considered model, an Internal Model Control strategy is proposed for the 18O isotope concentration control. The used controller is an adaptive fractional-order one and...
This paper describes an implementation of a model-based methodology to validate an innovative Hardware-in-the-loop (HIL) scheme applied to a mechatronic modular structure for a packaging machine. This new HIL environment is implemented by means of a unique CPU and allows use of an ordinary personal computer for the HIL simulation of a module of the packaging machine, without any other hardware tool...
This paper shows control results of simulations on mathematical model and real measurements on the real model of the water tank. The level in the tank is controlled via input volumetric flow rate through the proportional solenoid valve. The adaptive approach with the recursive identification was employed here for controlling of this system. The controller could be tuned by the choice of the pole position...
Petri nets are an effective way to model, analyze, and control deadlocks in automated manufacturing systems (AMS). There are three important criteria in designing and evaluating a liveness-enforcing supervisor for a system to be controlled: behavioral permissiveness, structural complexity, and computational complexity. A maximally permissive supervisor can lead to high utilization of system resources...
Nowadays advanced software programs are actively used in the field for simulation and modeling. LabVIEW and MATLAB/Simulink are both graphical programming languages, allowing a more efficient method to perform and analyze control systems. Therefore, they are the most commonly used software programs for these purposes. Moreover; in some applications — like hardware in the loop systems, flight simulations...
Cyber-physical systems (CPS) refer to novel hardware and software compositions creating smart, autonomously acting devices, enabling efficient end-to-end workflows and new forms of user-machine interaction, in a wide range of application fields. Given their heterogeneous nature, CPS are naturally designed in the so-called simulation-centric process, where physical equipment design are translated into...
In public transportation, simulation provides capabilities of investigation of complex interactions between the components of the transportation system, including infrastructure, vehicles, passengers and intelligent transportation system. Although many simulation platforms (either commercial or open source) exist to test, validate and evaluate the performance of control systems, the development of...
In this paper, the design of simulation software and control system for unmanned aerial vehicle (UAV) during aerial refueling is proposed, in which the simulation software is constructed under Microsoft Visual Studio 2010, and control system is designed based on the linear control theory and assumption of relatively small perturbations during the docking. The proposed model has the merits of explicitly...
An approach to optimize the control parameters for an extended-kanban control system (EKCS) is studied. The EKCS is a Just-in-Time production system that involves the advantages of classical kanban and base-stock control systems. Although EKCS can be modeled as a discrete-time Markov chain, the state space is gigantic even for a single stage production system, making it impossible to numerically compute...
In a smart energy system, power converters should be controlled by complex control software. However the efficient development of reliable control software is difficult. We have proposed to introduce a “model-based design” process using MATLAB/Simulink, established in the automotive and aerospace fields, to the development of power electronics systems. However, it was difficult in the past because...
Rarely do our embedded systems solutions exist in isolation. For the most part we enable a mechanical system. Our early prototype when first exercised in the laboratory will frequently appear to exhibit additional (unintended) behaviour from that of its well-behaved simulated design. We often ascribe that behaviour to the 'fragility' of the prototype, which may be typical of its mechanical attributes...
Auxiliary noise, injected in active noise control (ANC) system for on-line secondary path modeling (SPM), contributes to the residual error (which we want to minimize). In this paper, two new schemes for controlling the auxiliary noise injection are proposed. The first method is ON/OFF control in which an additional fixed filter is used to temporarily hold the tap-weights of the adaptive on-line SPM...
In this paper, we present the design of a simulation framework aimed to support testing of real components in a simulation environment. This enables thorough tests of software components without the need to create their models.
A functional design diagram for one of parallel hybrid electric vehicles performance simulation software was presented. Using the Unified Modeling Language modeling mechanism, the software system's architecture diagrams, using case diagrams and class diagrams were established. By giving an example for using the software, a compare was made between the software's result and another result which is...
This article realize a fuel control viscosity hardware-in-the-loop simulation experiment system, through the establishment of fuel viscosity model and the technology of computer data acquisition and communication. Fuel viscosity control system PID algorithm can be realized in the system. The result shows that the control effect is good, have good adaptive and robustness. At the same time, this system...
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