Dynamik der Kraftfahrzeuge

Analytical Description and Optimization of the Dynamic Behaviour of Passively Suspended Road Vehicles

“…Equation (8) has been reported in references [9,29]. In a log}log scaled plot (abscissa ) equation (8) takes the shape of a two slope curve, thus reference will be made by the acronym 2S-PSD.…”

“…The power spectral density (PSD) of the process may be determined on the basis of experimental measurements and in the literature there are many di!erent formulations for it (e.g., see references [7,9]). …”

Solving mixed-integer optimal control problems by branch&bound: a case study from automobile test-driving with gear shift

“…In fact, SODAS allows to use different discretization methods. Instead of the first-order Euler discretization scheme we used the classical Runge-Kutta discretization scheme of order four with piecewise constant control approximations on an equidistant grid given by (15). All computations were performed on a Pentium 3 processor with 750 MHz processing speed.…”

Chaotic vibration of a quarter-car model excited by the road surface profile

“…Past studies focused on the dynamics of a passive car suspension, the nonlinear characteristics of tyres and the effect of shimming in vehicle wheels [7,8,9]. Recently many new applications of active and semi active control procedures and special devices to minimize vehicle vibrations have been developed [10,11,12].…”

“…Recently many new applications of active and semi active control procedures and special devices to minimize vehicle vibrations have been developed [10,11,12]. Consequently old mechanical quarter car models [8,9] have been re-examined in the context of active damper applications. Dampers based on magnetorheological fluid with typical hysteretic characteristics have significant promise for effective vibration damping in many applications [13,14,15].…”