Flatness-based clutch control for automated manual transmissions

Observer-based second order sliding mode control laws for stepper motors

“…all the state variables and the inputs can be parameterized in terms of so-called flat outputs (or linearizing outputs) and a finite number of their successive time derivatives (see Fliess, Le´vine, Martin, & Rouchon, 1992;Fliess, Le´vine, Martin, & Rouchon, 1995;Fliess, Le´vine, Martin, & Rouchon, 1999 for theoretical background and Grochmal & Lynch, 2007;Horn, Bamberger, Michau, & Pindl, 2003 for some applications). Flat systems are dynamical systems that are linearizable to controllable linear systems by means of an endogenous feedback (i.e.…”

Precise piston trajectory control for a free piston engine

“…Therefore, a nonlinear feedforward control is investigated in this paper, and the control design is based on the flatness approach. A nonlinear system is flat if the states and the inputs can be determined by the output and finite number of output derivatives (Horn et al, 2003), which is true for the hydraulic FPE system.…”

“…Therefore, flatnessbased control is widely used from motion planning to stabilization of reference trajectories. Many of the realistic models are flat, such as aircrafts (Martin, 1996), motors (Chelouah, Delaleau, Martin & Rouchon, 1996) and clutch systems (Horn, Bamberger, Michau, & Pindl, 2003). Kock and Ferrari (2011) proposed a flatness-based feedforward plus feedback (PID and PD repetitive) control of a hydraulic actuator, which is utilized for a FPE test stand, to track high frequency and high amplitude signals.…”

A two-level Iterative Learning Control scheme for the engagement of wet clutches

“…Several authors have derived full physical models for wet clutches [2,[9][10][11][12][13][14]. These have been applied to the design of feedback controllers in [2,10] and feedforward controllers in [11,12].…”