In order to solve the trajectory-tracking-control problem of state-constrained flexible manipulator systems, a finite-time back-stepping control method based on command filtering is presented in this paper. Considering that virtual signal requires integration each step, which will lead high computational complexity traditional back-stepping, filter used and obtain intermediate finite time, thus...

Rotation of a single bacterial flagellar motor is powered by multiple stators tethered to the cell wall. In a " power-stroke " model the observed independence of the speed at low load on the number of stators is explained by a torque-dependent stepping mechanism independent of the strength of the stator tethering spring. On the other hand, in models that depend solely on the stator spring to ex...