摘要
馈能式主动悬架系统能量回收效率不高、动力学性能有限,无法满足现代高级汽车集馈能与减振为一体的性能要求,馈能式主动悬架的设计需要估算实际可以回收振动能后,才有利于实际结构设计及振动控制优化。为此提出了一种振动能量功率流计算方法,针对直线电机式馈能主动悬架系统,并以相同振幅,不同频率的正弦路面激励,通过Matlab仿真计算分析了车身加速度均方根值与回馈能量之间的关系。研究结果表明,路面激励越大,馈能悬架回收的功率越多,最高可达1.4 kW,馈能效率为25%,同时乘坐舒适性变差。该计算方法能为馈能式主动悬架系统的参数设计和主动控制算法设计提供实用的理论参考,在满足一定舒适性的前提下尽可能回收更多的能量的同时,提高了能量回收效率。
Aiming at the energy-regenerative active suspension is faced with the problem of lower energy recovery efficiency and the limit dynamic performance,which can not satisfy the modern advanced car with overall performance requirements of harvesting energy and vibration reduction.To optimize the actual structure and the vibration control algorithm,the actual recycled vibration energy should be estimated.Therefore,a vibration energy power flow calculation method was put forward.Focused on the energy-regenerative active suspension of linear motor,and with the same amplitude,the different frequency of the sinusoidal road excitation,the relationship between body acceleration root means square value and harvesting energy was calculated through Matlab simulation analysis.The results indicate that the worse road excitation,the greater the recovery of energy,up to 1.4 kW with 25％ harvesting energy efficiency.At the same time,the riding comfort is worse.The calculation method provides the theoretical practical reference of the design of energy-regenerative active suspension parameters and active control algorithm,meeting the requirements of a certain riding comfort of the vehicle when recycle more energy and improve the harvesting energy efficiency at the same time.
出处
《机电工程》
CAS
2014年第3期289-294,305,共7页
Journal of Mechanical & Electrical Engineering
基金
国家自然科学基金资助项目(51175474)
浙江省自然科学基金资助项目(LQ12E05011)
关键词
馈能悬架
直线电机
功率流
馈能量计算
energy-harvesting suspension
linear motor
power flow
harvesting energy calculation
