en موتور احتراق داخلی Internal Combustion Engines (ICE, ...) پژوهشي Research <p class="Body" style="margin: 0cm 0cm 0pt;"><font size="2"><font color="#000000"><font face="Times New Roman">Accurate and correct performance of controller in cruise control systems is important. Hence, in such systems, controller should optimize itself against noise and probable changes in system dynamic. As a matter of fact, in this article three approaches have been conducted to-ward this purpose: MIT, direct estimation and indirect estimation. These approaches are used as controllers to track reference signal. First the performance of each of these three controllers is checked. comparison of performances indicated better behavior for indirect estimation than others. Also, it has less sensitivity against external noise. Finally, by using indirect estimation method as an adaptive control approach, two parallel separate controllers are designed for two inputs, gas and braking, and their performances are compared with recent studies. It shows improvement in performance of adaptive cruise control system to track reference signal.</font></font></font></p> Intelligent transportation system, Longitudinal control, Adaptive cruise controller, Indirect estimation 2244 2255 http://ase.iust.ac.ir/browse.php?a_code=A-10-63-129&slc_lang=en&sid=1 E. Khanmirza 180031947532846001562 180031947532846001562 No H. Darvish 180031947532846001563 180031947532846001563 No F. Gholami .F Gholami 180031947532846001564 180031947532846001564 Yes E. Alimohammadi 180031947532846001565 180031947532846001565 No