Qingfeng Wang

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In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: a b s t r a c t LuGre model has been widely used in dynamic friction modeling and(More)
—Cogging force is an important source of disturbances for linear-motor-driven systems. To obtain a higher level of con-touring motion control performance for multiaxis mechanical systems subject to significant nonlinear cogging forces, both the coordinated control of multiaxis motions and the effective compensation of cogging forces are necessary. In(More)
Osteosarcoma (OS) is the most common bone malignancy worldwide. The vascular endothelial growth factor (VEGF) gene plays an important role in the pathogenesis of OS. The objective of this study aimed to detect the potential association between VEGF genetic polymorphisms and OS susceptibility in Chinese Han population. We recruited 330 OS patients and 342(More)
— This paper presents an integrated direct/indirect adaptive robust control (DIARC) scheme for a class of nonlin-ear systems preceded by unknown non-symmetric, non-equal slope dead-zone nonlinearity. Due to the inherent nonlinear parametrizaton nature of the unknown dead-zone nonlinearity, existing robust adaptive control methods have been focusing on using(More)