| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an adjustable speed control device switching a state feedback gain on the way of controlling, while stabilizing control performance of a feedback control system. SOLUTION: In this control device, a model-following control approach using a state space method computes an operation ratio for equalizing an estimated acceleration value '&alpha wf' to a target acceleration '&alpha w*', and when controlling an engine and a stepless transmission, sets initial values of a deviation integrator on both an acceleration command value '&alpha ref' and an estimated acceleration value '&alpha wf' for a standard model output so as to continuously vary the operation ratio before and after switching of the state feedback gain K. Thus the operation ratio continuously changes even throughout the state feedback gain switching, to prevent responses of the feedback control system from disorder. Accordingly the state feedback gain can rather freely be switched, therefore even a non-linear object to be controlled may achieve a stable, and a quick- responsive control performance in a wide driving area.</p> |
