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基于VFFRLS联合AUKF的锂电池SOC估计
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作者 邹康康 李良光 《无线互联科技》 2023年第23期140-142,共3页
锂电池的荷电状态估计(SOC)在动力电池管理系统中占有重要地位,准确的SOC预测是锂电池安全工作的关键保证。文章针对由电池模型的参数固定而导致模型参数辨识准确性不够以及传统无迹卡尔曼滤波精度较低、稳定性差等问题,采用可变遗忘因... 锂电池的荷电状态估计(SOC)在动力电池管理系统中占有重要地位,准确的SOC预测是锂电池安全工作的关键保证。文章针对由电池模型的参数固定而导致模型参数辨识准确性不够以及传统无迹卡尔曼滤波精度较低、稳定性差等问题,采用可变遗忘因子最小二乘算法(VFFRLS)对电池模型进行在线参数辨识,再联合自适应无迹卡尔曼滤波算法(AUKF)来估计SOC。在UDDS工况下对联合估计算法进行验证,实验结果表明,联合估计算法可将SOC估计误差控制在2.07%以内,能够有效提高SOC估计的准确性和鲁棒性。 展开更多
关键词 参数辨识 自适应无迹卡尔曼滤波 可变遗忘因子递推最小二乘法 荷电状态
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Flexible piezoelectric PVDF nanofiber film sensor by blow spinning
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作者 HE Wei DAI ZhiJun +3 位作者 zou kangkang LI XueYing HAO SongHua WANG HaoLun 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2023年第3期863-868,共6页
Flexible sensors can be widely applied in the area of lightweight,wearable and intelligent electronic devices.In aerospace,for example,flexible sensors are suitable for measuring pressure in complex aircraft structure... Flexible sensors can be widely applied in the area of lightweight,wearable and intelligent electronic devices.In aerospace,for example,flexible sensors are suitable for measuring pressure in complex aircraft structures.In recent years,flexible sensors have been well developed;however,most of them lack circuit parts,meaning that the sensors have to be connected to an external electrical source.Additionally,the current traditional design limits their flexibility.Thus,this article proposes a self-powered flexible sensor based on PVDF nanofiber film,which is created through an efficient blow spinning method.The piezoelectric PVDF nanofiber films were prepared,and the flexible pressure sensor was assembled.The PVDF nanofiber film sensor showed good sensitivity and stability,and it can be applied for the detection of human physiological signals. 展开更多
关键词 PVDF nanofiber network blow spinning flexible sensor
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