| 欧阳青,胡红生,徐林平,等.发动机曲轴系磁流变脂扭振减振器设计及控制[J].内燃机工程,2025,46(4):212-220. |
| 发动机曲轴系磁流变脂扭振减振器设计及控制 |
| Design and Vibration Control of Magneto-Rheological Torsional Vibration Damper for Engine Crankshaft System |
| DOI：10.13949/j.cnki.nrjgc.2025.04.022 |
| 关键词:曲轴 扭振减振器 磁流变脂 半主动控制 模糊控制 |
| Key Words:crankshaft torsional vibration damper magnetorheological grease semi-active control fuzzy control |
| 基金项目:国家自然科学基金项目（51805209）； 浙江省自然科学基金项目（LTGY24E050001， LGG20E050022）； 嘉兴市科技计划项目（2022AY30014）； 嘉兴大学勤慎青年学者项目（CD70623001） |
|
| 摘要点击次数: 444 |
| 全文下载次数: 388 |
| 摘要:针对传统曲轴扭振减振器性能过于依赖参数匹配设计，对系统结构、工况等条件的变化缺乏自适应性，且难以实现多谐次、宽频域的减振控制问题，设计了一种基于磁流变阻尼可控特性的新型曲轴扭振减振器，并分析验证了减振器的变阻尼力学特性及曲轴自适应减振控制效果。基于曲轴系变阻尼扭振控制理论分析，并结合传统硅油扭振减振器的结构构型，设计了新型盘式的磁流变脂扭振减振器。利用搭建的扭振减振器力学测试平台，试验测试了不同振动激励条件、不同控制电流下磁流变扭振减振器的力学性能，并构建了基于双曲正切模型的器件动力学模型。通过AMESim和MATLAB联合控制仿真，对比分析了发动机匀速和匀加速工况下，曲轴系在未安装减振器、被动控制、天棚控制和模糊控制下的扭振控制效果。结果表明，所设计的磁流变扭振减振器具备变阻尼力学输出特性，输出阻尼扭矩的可调倍数达4.36，满足变阻尼扭振控制的器件设计要求；结合控制算法的磁流变半主动扭振减振控制能极大提升曲轴系抑振效果，其中模糊减振控制整体效果最佳，可实现27.2%~69.5%扭振角速度及角加速度的抑振效果，而天棚减振控制效果次之，传统的被动减振控制效果相对最差。 |
| Abstract:In response to the inadequacy of traditional crankshaft vibration dampers in adapting to system structure and operating conditions， as well as their limited ability to achieve multi-harmonic， wide-frequency vibration control， a novel crankshaft vibration damper featuring controllable magnetorheological （MR） damping characteristics was designed. The damping torque characteristics and adaptive damping control effect of the crankshaft were analyzed and validated. A new disc-type MR grease torsional damper was designed based on theoretical analysis of variable damping torsional control and the structural configuration of traditional silicone oil torsional dampers. Mechanical properties of the MR torsional damper were experimentally tested under various vibration excitation conditions and control currents on a dedicated test platform. A dynamic model for the device based on the tangent hyperbolic model was established. Combined control simulations using AMESim and MATLAB were conducted to compare and analyze the torsional vibration control effects under different scenarios including uninstalled damper， passive control， skyhook control， and fuzzy control during steady-speed and steady-acceleration engine operation. The results indicate that the designed MR torsional damper exhibits variable damping mechanical output characteristics with an adjustable torque range of 4.36， meeting design requirements for variable damping torsional vibration control. The implementation of semi-active control strategy for MR torsional vibration damper can significantly enhance the vibration damping effectiveness of the crankshaft system. Among these， the fuzzy vibration damping control algorithm demonstrates the most comprehensive vibration damping effect， achieving a reduction in torsional angular velocity and angular acceleration by 27.2% to 69.5%. Following closely is the skyhook vibration damping control effect， while the traditional passive vibration damping control exhibits relatively inferior performance. |
|
查看全文 HTML
查看/发表评论 下载PDF阅读器 |