A. Halanay et Ca. Safta, PERIODIC MOTIONS FOR LOADED 2 CONTROL EDGES HYDRAULIC COPYING SYSTEMS, Computer methods in applied mechanics and engineering, 158(3-4), 1998, pp. 367-374
Using the Hopf theorem and the algorithm developed in [1] we prove tha
t while loosing asymptotic stability, a hydraulic copying system still
works at a stable limit cycle. We compute the value of the underlap o
f the valve for this to happen and remark that it is in the range of t
urbulent oil flow. (C) 1998 Elsevier Science S.A.