Abstract




 
   

IJE TRANSACTIONS C: Aspects Vol. 31, No. 12 (December 2018) 2109-2114   

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  ANALYTICAL MATCHING OF OPTIMAL DAMPING CHARACTERISTICS CURVE FOR VEHICLE PASSIVE SUSPENSIONS
 
L. Zhao, Y. Yu, C. Zhou and X. Li
 
( Received: March 31, 2018 – Accepted in Revised Form: October 26, 2018 )
 
 

Abstract    To facilitate the damping matching of dampers for vehicle passive suspensions, this paper proposes an analytical matching method of the optimal piecewise linear damping characteristics curve. Based on the vehicle vibration model, taking the suspension dynamic deflection as the constraint, by the vibration acceleration and the wheel dynamic load, an objective function about the relative damping coefficient was created. Using the integral mid-value law, an analytical formula of the optimal relative damping coefficient was established and the analytical matching method of the piecewise linear damping characteristics curve was presented. With a practical example, the effectiveness of the proposed matching method was validated by road test. The results showed that the method presented is workable, which has important reference value for fast damping matching of vehicle passive suspensions.

 

Keywords    Passive Suspension; Relative Damping Coefficient; Characteristics Curve; Integral Mid-value Law; Analytical Matching

 

چکیده   

برای تسهیل تطبیق لغزش دمپر برای تعلیق های غیرفعال خودرو، این مقاله یک روش تطبیق تحلیلی برای منحنی ویژگی های منحنی خنک کننده خطی به صورت تحلیل آنالیزبهینه ارائه می دهد. بر اساس مدل ارتعاش خودرو، با توجه به شتاب ارتعاش و بار دینامیکی چرخش پویایی تعلیق به عنوان محدودیت، یک تابع هدف در مورد ضریب آرام سازی نسبی ایجاد شد. با استفاده از قانون ثانويه مقادیر انتگرال، یک فرمول تحلیلی از ضریب آرام سازی نسبی بهینه تهیه شد و روش تطبیق تحلیلی منحنی ویژگی های خمشی خطی بسته بندی شده ارائه شد. با یک مثال عملی، اثربخشی روش تطبیق پیشنهادی با آزمون جاده تأیید شد. نتایج نشان داد که روش ارائه شده عملی است که ارزش مرجع قابل توجهی را برای تطبیق سرعت مکانیسم تعلیق های غیر فعال خودرو دارد.

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