Showing 3 results for Amiri
M. M. Tehrani, M. R. Hairi-Yazdi, Ba. Haghpanah-Jahromi, V. Esfahanian, M. Amiri, A. R. Jafari,
Volume 1, Issue 2 (6-2011)
Abstract
In this paper, an adaptive rule based controller for an anti-lock regenerative braking system (ARBS) of a series hybrid electric bus (SHEB) has been proposed. The proposed controller integrates the regenerative braking and wheel anti-lock functions by controlling the electric motor of the hybrid vehicle, without using any conventional mechanical anti-lock braking system. The performance of the proposed system is evaluated by a comprehensive vehicle dynamics model in MATLAB/Simulink. Using the designed ARBS, the braking and regenerative performances of SHEB have significantly improved in slippery roads while the slip ratios are kept between 0.15 and 0.20.
R. Mirzaamiri, M. Esfahanian, S. Ziaei-Rad,
Volume 2, Issue 3 (7-2012)
Abstract
During the design and development of truck cabins, the safety of the driver and the front seat passenger in
an accident is an important task and should be considered. The cab must be designed in such a way that in
an accident a sufficient survival space is guaranteed. The aim of this study is to investigate the behavior of
Iran Khodro (IKCO) 2624 truck subjected to a complex crash test according to regulation ECE-R29. This
regulation is a comprehensive European regulation consisting of three tests: 1-Front impact test (Test A), 2-
Roof strength test (Test B), 3-Rear wall strength test (Test C). These tests do not consider the safety of the
occupant directly however, a III-50th% dummy was used to assess the cab’s deformations relative to the
driver survival space. A 3D finite element model of the cab and chassis was developed and subjected to
tests by using LS-DYNA software. The results indicate that the cab complied with Test A and C
successfully while it passed Test B marginally. Finally, two solutions are suggested and implemented to
improve the cab’s response for Test B.
M. Esfahanian, A. Mahmoodian, M. Amiri, M. Masih Tehrani, H. Nehzati, M. Hejabi, A. Manteghi,
Volume 3, Issue 4 (12-2013)
Abstract
In the present study, a model of a large Lithium Polymer (Li-Po) battery for use in the simulation of Hybrid
Electric Vehicles (HEVs) is developed. To attain this goal, an Equivalent Circuit (EC) consisting of a series
resistor and two RC parallel networks is considered. The accuracy and the response time of the model for
use in an HEV simulator are studied. The battery parameters identification and model validation tests are
performed in low current with a good accuracy. Similar test process is implemented in high current for
another cell and the simulation is verified with experimental results. The validation tests confirm the
accuracy of the model for use in HEV simulator. Finally, the battery model is used to model a Vehicle, Fuel
and Environment Research Institute (VFERI) hybrid electric city bus using ADVISOR software and its
compatibility with other components of the vehicle simulator are demonstrated in a drive cycle test.
