Gaoya dianqi高频模态阻尼对整数槽多极对数电机振动噪声计算模型准确性具有重要作用，由于锤击实验带宽限制，高频模态阻尼比无法识别。为此文中提出一种高频模态阻尼比识别方法：通过锤击法模态实验测试低频固有频率振型及阻尼比，同时考虑模态频率和阶次影响建立分段阻尼模型，基于最小二乘原理，根据实验测得的低频模态数据拟合分段阻尼模型参数，基于该模型估算高频模态阻尼比。利用文中方法对一台48槽8极永磁同步电机高频模态阻尼比进行识别，建立“电磁—结构振动—噪声”多物理域联合振动噪声仿真模型，提高振动噪声计算模型精度 ...
李晓华 +5 more
doaj
[Impact of ultrasonic scaling on abutment screw torque in implant restorations]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanTang Y, Zhao X, Yang X, Jia H, Liu Y.
europepmc +1 more source
[Performance validation and consistency assessment of three liquid chromatography-tandem mass spectrometry methods for detecting fat-soluble vitamins]. [PDF]
Se PuLi BC +8 more
europepmc +1 more source
[Efficacy analysis of electrochemical detection of leukocyte esterase based on glucosyl ester in diagnosis of periprosthetic joint infection after knee arthroplasty in rabbits]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiLuo N +5 more
europepmc +1 more source
[<i>In vitro</i> culture, expansion, and biological characterization of mesenchymal stem cells derived from neonatal rat liver]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoChi M, Li B, Wu J, Ge J, Tang Y.
europepmc +1 more source
[Collaborative motion control method for dual-arm surgical robots based on hybrid multi-stage optimization]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiLin B, Li K.
europepmc +1 more source
[Anti-inflammatory effects of cell membrane vesicle-mediated delivery of small interfering RNA targeting tumor necrosis factor-α on dental pulp stem cells]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanGao R +6 more
europepmc +1 more source
[Study on electrospun film-covered tracheal stents with adaptive release of anti-inflammatory drugs driven by the piezoelectric effect]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiWang Z +6 more
europepmc +1 more source