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ترکیب سیستم‌های ترمز فعال و تعلیق نیمه‌فعال جهت بهبود پایداری چرخشی و غلتشی خودرو | ||
| نشریه مهندسی مکانیک امیرکبیر | ||
| مقاله 8، دوره 53، شماره 6، شهریور 1400، صفحه 3549-3570 اصل مقاله (2.65 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22060/mej.2020.18448.6817 | ||
| نویسندگان | ||
| عباس سلطانی* 1؛ شهرام آزادی2 | ||
| 1استادیار، گروه مهندسی صنایع، مکانیک و هوافضا، مرکز آموزش عالی فنی و مهندسی بوئین زهرا، بوئین زهرا، ایران. | ||
| 2دانشیار، دانشکده مهندسی مکانیک، دانشگاه صنعتی خواجه نصیرالدین طوسی، تهران، ایران. | ||
| چکیده | ||
| این مقاله، ترکیبی از سیستم‌های فعال شاسی جهت بهبود پایداری چرخشی و غلتشی خودرو با استفاده از سیستم‌های ترمز فعال و تعلیق نیمه‌فعال را ارائه می‌کند. سیستم ترمز فعال طراحی‌شده بر‌اساس کنترل مود لغزشی، احتمال واژگونی خودرو را با کاهش سرعت طولی و شتاب جانبی کاهش می‌دهد. همچنین، یک سیستم تعلیق نیمه‌فعال به روش کنترل فازی جهت بهبود پایداری غلتشی طراحی شده که اثر شتاب جانبی را بر زاویه غلت و سرعت آن کاهش می‌دهد. نرخ انتقال بار جانبی، به‌عنوان معیار واژگونی انتخاب می‌شود که بر‌پایه زاویه غلت و شتاب‌های عرضی و غلتشی می‌باشد. یک مدل دینامیکی خودرو در محیط نرم‌افزار آدامز ساخته می‌شود که شامل زیرسیستم‌های تعلیق عقب و جلو، ترمز و فرمان، مدل تایر و بدنه می‌باشد. ویژگی‌های غیر‌‌‌خطی تایرها، بوش‌ها، فنر‌ها و میراگرها نیز در این مدل لحاظ شده‌اند. بنابراین مدل، عملکرد دینامیکی خودرو را به‌طور دقیق بیان می‌کند. الگوریتم کنترلی تحت مانور‌های زاویه پله فرمان و تعویض مسیر با استفاده از شبیه‌سازی مشترک نرم‌افزار‌های آدامز و متلب ارزیابی می‌شود. نتایج شبیه‌سازی نشان می‌دهد که سیستم طراحی‌شده با کنترل‌کننده‌های ترکیبی در مقایسه با سیستم‌های جداگانه ترمز فعال و تعلیق نیمه‌فعال به‌خوبی می‌تواند پایداری چرخشی و جلوگیری از واژگونی خودرو را بهبود بخشد. | ||
| کلیدواژه‌ها | ||
| کنترل شاسی خودرو؛ پایداری چرخشی؛ پایداری غلتشی؛ شبیه‌سازی مشترک نرم‌افزار؛ آدامز و متلب | ||
| عنوان مقاله [English] | ||
| Combination of active braking and semi-active suspension systems to improve the roll and yaw vehicle stability | ||
| نویسندگان [English] | ||
| Abbas Soltani1؛ Shahram Azadi2 | ||
| 1Assistant Professor, Department of Industrial, Mechanical and Aerospace Engineering, Buein Zahra Technical University, Buein Zahra, Iran. | ||
| 2Associate Professor, Department of Mechanical Engineering, K.N. Toosi University, Tehran, Iran. | ||
| چکیده [English] | ||
| This paper presents a combined use of active chassis systems to enhance vehicle roll and yaw stability using semi-active suspension and active braking systems. The designed active braking system based on sliding mode control reduces the probability of vehicle rollover by decreasing the longitudinal velocity and lateral acceleration. Also, a semi-active suspension is proposed through fuzzy control method to improve the vehicle roll stability, which attenuates the effect of lateral acceleration on roll angle and roll rate. The lateral load transfer ratio is selected as the rollover index based on roll angle and lateral and roll accelerations. A vehicle dynamics model is built in the ADAMS environment, which includes subsystems of steering, braking and front and rear suspension, tire model and body. Also, the nonlinear characteristics of tires, bushings, springs and dampers are considered in the model. So, it can accurately express the dynamics performance of the vehicle. The control algorithm is evaluated under step steer and lane change maneuvers utilizing MATLAB and ADAMS co-simulation. Simulation results show that the proposed system with combined controllers can effectively improve the vehicle yaw stability and the rollover prevention compared with the only active braking and semi-active suspension systems. | ||
| کلیدواژه‌ها [English] | ||
| Vehicle chassis control, Roll stability, Yaw stability, Co-simulation of software, ADAMS and MATLAB | ||
| مراجع | ||
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