Although IST possesses the capability to effectively
suppress residual vibrations, it lacks the ability to suppress
vibrations caused by external disturbances. In
the following paper, we have proposed the method of
Commandless IST(C1ST) to overcome this weak point.
According to CIST, when a vibration is detected, the
impulse is generated by a control input which in turn
triggers a reverse vibration to negate the original vibration,
resulting in the complete elimination of the
original vibration. The general idea and design methods
of CIST are provided and the effectiveness of CIST
is confirmed through computer simulations. Also, according
to experiments conducted to suppress vibrations
arising when unloading the hydraulic telescopic
handler, it was found that by applying CIST, the level
of vibrations was reduced by over 75%.