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A self-propelled anti-aircraft rocket system is presented in the paper. The system consists of a target-homing short-range missile launcher, a ground vehicle and a driver. The driver activates the process of launching of the two rockets consecutively. The aim of the paper is to discuss the influence of the launcher guide-missile system structure on the anti-aircraft rocket system.
The article demonstrate simulation of dynamic systems. Real data, received from real object-mobile minirobot, has been used to simulations and analysis. Numerical calculations and visualization have been done in the Matlab™-Simulink and InTouch programme environment.
The basic problems concerning the inversion methods are presented in the paper. The inverse methods have a great applications in many fields of sciences (geophysics, medicine, mechanics, vibroacoustics, oceanography). The paper presented also the contribution of polish scientists in inversion methods.
The paper presents the analysis of vibrations of the discrete - continuous vibroinsulating system. The protected object is treated as a rigid body and the beam as a continuous body. Over-vibrations reduction of the object realize by magnetorheological fluid damper. The computational model described by differential equations using the class of generaized functions.
The study is concerned with the development of magnetorheological (MR) flow, shear and squeeze mode vibration dampers (MR dampers), which has been a part of author's research program for two years. The composition and operating mechanism of MR fluids with an emphasis on modes used to construct MR vibration dampers are of the particular interest. Structures of MR flow and shear mode dampers, and selected...
In this thesis characteristics of dynamical flexibility with taking into consideration the transportation effect were presented. The considered system is the elastic beam with a symmetrical section. The beam was weighted down by the harmonic bending force and the model of mechanism was described in two reference systems: global and local.
This paper presents the application of Artificial Neural Networks (ANN) in the identification of damage in simple engineering structures. The application of ANNs expands the nondestructive damage identification method using an additional parameter introduced to the structure. The input vector of the ANNs consists of the dynamic responses of a structure with additional mass. The output vector is composed...
The paper presents the connected evolutionary and gradient identification of the internal defects in an elastic body under dynamical load. The identification proceeds on the basis of the knowledge about boundary displacements in some sensor points. In the first step the evolutionary algorithm (EA) identifies the number, kind, position and size of internal defects. The fitness function is computed...
This paper presents the application of dynamic method in the estimation of changes of reinforced concrete (RC) beams stiffness. The objects of research are three RC beams. Changes of beams stiffness are caused by changes of supports location and particular stages of loading the beams up to their failure. For each support location and after every cycle of loading and unloading the frequency characteristics...
The experimental test introduced in the paper is the part of the diagnostic system. The authors investigate the influence of the additional mass on modal parameters of simply supported steel plate. This paper presents a technique for modal parameters estimation for structural health monitoring systems.
In this paper we propose a sensor-based navigation method for navigation of wheeled mobile robot, based on the Kohonen Self-Organising Map (SOM). We discuss a sensor-based approach to path design and control of wheeled mobile robot in an unknown 2-D environment with static obstacles. A strategy of reactive navigation is developed including two main behaviours: a reaching the middle of a collision-free...
The free vibration problem of the truck crane chassis frame with attached rotating frame and telescopic boom is considered. The formulation and solution of the problem have been done by the use of finite element method and the system COSMOS/M. On the basis of the formulated model the investigations of the influence of the rotating frame position on the system's free vibration frequencies and mode...
In the paper the inverse structural filter method is used for rail wheel system load reconstruction. In the first section the method is presented The method bases on structural filter coefficients identification. The filter, further is used for load estimation from the vibrations acceleration time histories. The tested method was verified with experimental data. Time histories used for verification...
Results of stress analysis in different elements of the three tested bridges are presented in this paper. The methodology of bridges fatigue life estimation is presented. Results obtained from empirical tests have been compared with results abtained using the "rain flow" method. Also the artifical neural network has been recognized as an useful method of fatigue life assessment of steel...
In this paper the concideration relating to selecion of optimal control for discrete-continuous absorbing system described with system of ordinary and partial differential equations was presented. Selection of optimal control aimed at minimalization of vibrations of the object placed on platform fixed on flexible connector.
In the paper the influence of time of prediction on optimal isolation system of a seated human operator body subjected to random excitation has been analyzed. Human body model was considered as an active, linear, lumped parameter unidirectional dynamical system. Synthesis of optimal vibration isolation system (VIS) was founded on Wiener's method of optimization. Analytically described the optimal...
The Galerkin's method to research of vibration of field-gun's barrel is presented, in the paper. The examples of numerical analysis are presented and discussed.
Decoupled Extended Kalman Filter (DEKF) algorithm was used for the training of Feed-forward Layer Neural Network (FLNN). Data taken from [1] correspond to Displacement Response Spectra (DRS) computed on the base of vibration records measured on the ground level for paraseismic excitation (inputs to FLNN) and on the fourth floor of monitored buildings (outputs of FLNN). It was proved that the application...
Mode shape decoupling using wavelet transform has been applied to modal damping factor estimation. The connected method of Recursive Last Square and Wavelet Transform has been presented. The algorithm is verified on the simulation result for the two degree of freedom system with variable damping and real data. Digital Signal Processor has been used to the on - line modal parameter identification.
The paper deals with an application of neural networks for evaluation of soil-structure interaction in case of the transmission of ground vibrations from mining tremors to building basement. The problem of is analyzed with respect to typical prefabricated eleven-storey building with load bearing walls. The comparison of maximal values (amplitudes) of vibrations (accelerations) rccorded at the same...
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