Amplitude Control of a Self-Vibration Machine
In this paper, a spring-mass-damper system with an electrical circuit (3rd-order system)
is investigated to establish a self-vibration machine.
The design of feedback gain makes the system a self-excited oscillator.
The mechanical part (spring-mass-damper system) in the 3rd-order system becomes
self-vibration machine which is robust against variation of the mass.