Scholarlink

<p>The occurrence of abrupt vertical excitations, such as speed bumps, complicates the suspension system’s task of balancing stability with ride comfort. This paper uses the Coefficient Diagram Method (CDM) to design a semi-active suspension controller in a two-degree-of-freedom quarter-car to improve its performance in real-world disturbances. System investigated with controllers in different orders in displacement and acceleration&#xa0;cases. The model was initiated in Simulink, and circular/trapezoidal speed humps were applied to the vehicle at speeds of 5, 15, and 30 km/h. The root-mean-square values of body acceleration, body displacement, suspension working space, and tire dynamic load were used to evaluate performance, and it was benchmarked with a passive suspension. The outcome has indicated that acceleration feedback demonstrated the most significant decrease in body vertical acceleration of up to 69.3 percent and reduced dynamic tire load considerably. Displacement feedback, on the other hand, offered the greatest reduction in suspension working space (as much as 61.1 percent) and resulted in significant decreases in body motion, especially on trapezoidal humps. Although the speed increment during traveling through humps caused a decrease in overall gains, two strategies were repeatedly superior to the passive suspension. This evidence shows that CDM-based semi-active control would be an efficient and effective solution to adaptive suspension design with a possible application to vehicles that traverse urban settings where traffic-calming is commonplace.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Coefficient diagram method-based control of semi-active vehicle suspensions with performance evaluation over circular and trapezoidal speed humps at multiple speeds

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年1月7日

查看全文
  • Mohamed H. Abdelati,
  • Khaled R. M. Mahmoud,
  • Ebram F. F. Mokbel,
  • Gamal Seif Elnasr,
  • Ismail M. Youssef

摘要

The occurrence of abrupt vertical excitations, such as speed bumps, complicates the suspension system’s task of balancing stability with ride comfort. This paper uses the Coefficient Diagram Method (CDM) to design a semi-active suspension controller in a two-degree-of-freedom quarter-car to improve its performance in real-world disturbances. System investigated with controllers in different orders in displacement and acceleration cases. The model was initiated in Simulink, and circular/trapezoidal speed humps were applied to the vehicle at speeds of 5, 15, and 30 km/h. The root-mean-square values of body acceleration, body displacement, suspension working space, and tire dynamic load were used to evaluate performance, and it was benchmarked with a passive suspension. The outcome has indicated that acceleration feedback demonstrated the most significant decrease in body vertical acceleration of up to 69.3 percent and reduced dynamic tire load considerably. Displacement feedback, on the other hand, offered the greatest reduction in suspension working space (as much as 61.1 percent) and resulted in significant decreases in body motion, especially on trapezoidal humps. Although the speed increment during traveling through humps caused a decrease in overall gains, two strategies were repeatedly superior to the passive suspension. This evidence shows that CDM-based semi-active control would be an efficient and effective solution to adaptive suspension design with a possible application to vehicles that traverse urban settings where traffic-calming is commonplace.