COMPUTER SIMULATION OF VIBRATION SURVEILLANCE OF DISCRETELY IDEALISED MECHANICAL SYSTEMS. PART I: OPTIMAL CONTROL AT THE ENERGY PERFORMANCE INDEX FOR OPEN NON-STATIONARY SYSTEMS

Abstract

The paper discusses means of mechanical vibration surveillance using elements of control theory, dynamic optimisation, modern methods of computer simulation and measurement techniques. A mixed method of rigid and flexible finite elements is applied to discrete modelling of non-stationary controlled systems. A method of vibration surveillance in the time domain is elaborated, which utilises optimal control at the energy performance index with respect to the trajectory of given motion. An example is given of surveillance of transient vibration of a railway freight wagon weighing device.