01716nab a2200217 4500 20260520003108.0 260224s2015 xxu ing Inglés Development of Look-Ahead Controller Concepts for a Wheel Loader Application ene./feb. 2015 14/09/2015 ; 14/09/2015 19 p. ; 159-178 Transcripción del resumen del autor: This paper presents two conceptual methods, based on dynamic programming, for one-step look-ahead control of a Continuously Variable Transmission (CVT) in a wheel loader. The first method developed, designated Stochastic Dynamic Programming (SDP), uses a statistical load prediction and stochastic dynamic programming for minimizing fuel use. The second method developed, designated Free-Time Dynamic Programming (FTDP), has vehicle speed as a state and introduces a fixed 0.1 s delay in the bucket controls in a combined minimization of fuel and time. The methods are evaluated using a set of 34 measured loading cycles, used in a ‘leave one out’ manner. The evaluation shows that the SDP method requires about 1/10th of the computational effort of FTDP and has a more transparent impact of differences in the cycle prediction. The FTDP method, on the other hand, shows a 10% lower fuel consumption, which is close to the actual optimum, at the same cycle times, and is able to complete a much larger part of the evaluation cycles. 1 Oil and Gas Science and Technology 70 ARTICULO Nilsson, Tomas 54875 Fröberg, Anders 54876 Aslund, Jan 54877 189203 189203 0 0 0 0 257022 BAAB BAAB 2026-03-06 200061435 0 200061435 2026-03-06 00:19:25 2026-03-06 ARTICULO