Parameter changing for elastomechanical oscillating system - has feedback circuit for elastic damping of mass forces

摘要

The oscillating system parameters are rigidity, damping and/or mass. Distances travelled, velocities and/or accelerations in the oscillating system are measured. The signals are generated in the form of a voltage from which interferences have been removed, and applied as control signal to a power amplifier which generates a current proportional to the control signal. This current is applied through an oscillation exciter in the form of a force corresp. to elastic, damping or mass force to the oscillating system, thus closing a feed-back circuit so produced. The interferences are removed by a filter which is provided with a controllable generator (6). The filter (3) is phase and amplitude coherent.