|
| |
|
| |
|
|
Vibration and stability of electro-mechanical system with limited source of energy
Půst, Ladislav ; Radolfová, Alena
The paper presents an analysis of vibration of electromechanics system consisting of a 1DOF vibrating mechanical subsystem connected by means of spring and crank mechanisms with an electric driving motor with limited power and inertia. After transformation of motion equations and using averaging method, the approximate expressions for stationary and transient vibrations are derived. Owing to the non-ideal excitation, the unstable section of stationary response curve originates and causes jumps at transient processes. Influence of slope of moment characteristics and driving motor inertia on the range and level of instability domain is shown and discussed as well.
|
|
|
To the time heteronymous damping in a non-linear parametric planetary systems
Hortel, Milan ; Škuderová, Alena
The present world development of mobile machines leads to a high-powered high-speed constructions with minimum dimensions and masses. By such light high-speed systems as are for example the speed reducers of turbines onto propellers occur in a discs of the cog wheels the lightening holes, which cause the speed heteronomy in the damping properties of wheel discs and thereby the total damping incidence in gear meshes. This study elaborates the methodology of analysis of the influence of time variable damping in gear mesh of kinematic pairs on the internal dynamics of non-linear parametric systems.
|
|
| |
|
|
DEVICE FOR EXPERIMENTAL RESEARCH OF INTERACTION OF ENERGY SOURCE WITH VIBRATING SYSTEM
Půst, Ladislav
For improvement and complementation of theoretical studies of interaction between a non-ideal source of exciting energy and vibrating mechanical system, a simple experimental equipment has been designed, produced and putt into testing service in IT – AS CR. This equipment consist of 1 DOF mechanical subsystem, connected by a crank mechanism with DC electromotor, fed by a prescribed voltage function. Measuring and recording apparatuses are prepared for evaluation of dynamical properties of various system modifications.
|
guest ::
