| 曹友强,邓兆祥,廖一橙.车厢壁板振动噪声主动控制技术研究[J].高技术通讯(中文),2013,23(2):196~202 |
| 车厢壁板振动噪声主动控制技术研究 |
| Research on active control of vibration and noise for carriage panel |
| 修订日期：2012-04-10 |
| DOI： |
| 中文关键词: 车厢壁板, 振动噪声, 机敏约束层阻尼(SCLD), 主动控制 |
| 英文关键词: carriage panel, vibration and noise, smart constrained layer damping (SCLD), active control |
| 基金项目:973计划（2010CB736104）资助项目 |
| 作者 | 单位 | | 曹友强 | 汽车噪声振动和安全技术国家重点实验室；重庆大学机械传动国家重点实验室 | | 邓兆祥 | 汽车噪声振动和安全技术国家重点实验室；重庆大学机械传动国家重点实验室 | | 廖一橙 | 重庆大学机械传动国家重点实验室 |
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| 中文摘要: |
| 以某轿车车身结构缩尺物理模型为对象，对利用压电机敏约束层阻尼(SCLD)这一新型阻尼减振技术实现车厢壁板振动噪声的主动控制的方法进行了研究和尝试。搭建了含SCLD结构的车身结构振动噪声主动控制硬件在环实验系统，结合自适应技术设计了车厢壁板主动控制系统模型，并以车厢内部噪声为控制目标，开展了在不同外扰激励下车身壁板振动噪声主动控制实验研究。结果表明，对于单频信号和复杂周期信号激励环境，采用SCLD减振技术都能取得车厢内噪声明显降低的控制效果，且最大降噪量达到了7.6dB(A)。这为采用智能控制策略改善车身NVH性能提供了有力的技术基础 |
| 英文摘要: |
| Taking the scale model of a car body as the object, the study tried to realize the active control of the vibration and noise in carriage panel by using a new vibration reduction technique, named the piezoelectric smart constrained layer damping (SCLD). An experimental system for active control the vibration and noise of SCLD body structures was built based on hardware in loop. Using the adaptive technology, a model for active control of the vibration and noise for carriage panel was designed. And taking the carriage inner noise as the control target, the experiment on active control of the vibration and noise for carriage panel was carried out under different outside disturbances .The results showed that the carriage inner noise was decreased obviously by the SCLD technology for vibration reduction under the disturbances of single frequency and complex periodic signal, and the biggest noise reduction was 7.6dB(A). The study provides the technological basis for improvement of car body NVH performance by using intelligent control strategies |
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