Zobrazeno 1 - 10
of 149
pro vyhledávání: '"Keqing Lu"'
Publikováno v:
IEEE Access, Vol 7, Pp 28001-28010 (2019)
Nozzle-flapper servo valves are widely used in modern electro-hydraulic control systems of many engineering applications. Flow cavitation in the nozzle-flapper pilot stage could produce noise and cavitation erosion, reducing the performance stability
Externí odkaz:
https://doaj.org/article/5822401506364d85bbf29b551be0f280
Autor:
Tao Sun, Wen Wang, Zhanfeng Chen, Yewen Zhu, Kaifei Xu, Haimei Wu, Zhiqian Sang, Keqing Lu, He Yang
Publikováno v:
Applied Sciences, Vol 11, Iss 24, p 11770 (2021)
Due to the errors of the servo system and the errors of the ball screw drive system, the positioning errors inevitably occur in the process of CNC machine tools. The measurement of traditional equipment is limited by a fixed measurement radius and a
Externí odkaz:
https://doaj.org/article/cd3aa06474a94979b165a5a506c8bcba
Autor:
Wen Wang, Jiahui Wang, Ruijin Wang, Zhanfeng Chen, Fuming Han, Keqing Lu, Chuanyong Wang, Zhenlong Xu, Bingfeng Ju
Publikováno v:
Micromachines, Vol 12, Iss 11, p 1366 (2021)
Piezoelectric actuators are widely used in the field of micro- and nanopositioning due to their high frequency response, high stiffness, and high resolution. However, piezoelectric actuators have hysteresis nonlinearity, which severely affects their
Externí odkaz:
https://doaj.org/article/6d527e0273114664a8dc0a71918abc61
Publikováno v:
Advances in Mechanical Engineering, Vol 11 (2019)
Electro-hydraulic servo-valves play key roles in modern electro-hydraulic power systems in many industrial applications. As one of the widely used hydraulic servo-valves, cavitation in the flapper-nozzle servo-valve could produce deleterious effects
Externí odkaz:
https://doaj.org/article/da362b94bd2b48debb5b2220ef87daeb
Autor:
Wen Wang, Fuming Han, Zhanfeng Chen, Ruijin Wang, Chuanyong Wang, Keqing Lu, Jiahui Wang, Bingfeng Ju
Publikováno v:
Micromachines, Vol 12, Iss 1, p 92 (2021)
Piezoelectric actuators are widely used in micro- and nano-manufacturing and precision machining due to their superior performance. However, there are complex hysteresis nonlinear phenomena in piezoelectric actuators. In particular, the inherent hyst
Externí odkaz:
https://doaj.org/article/c16388e89b70483b97fe5a15f151d272
Publikováno v:
Micromachines, Vol 11, Iss 9, p 837 (2020)
Spherical joints have attracted increasing interest in the engineering applications of machine tools, industrial robots, medical equipment, and so on. As one of the promising methods of detecting the micro-clearance in spherical joints, the measureme
Externí odkaz:
https://doaj.org/article/dffbe8f4dc9744f58c0e835b7b93f5b4
Publikováno v:
Applied Sciences, Vol 10, Iss 9, p 3100 (2020)
Existing scanning laser three-dimensional (3D) imaging technology has slow measurement speed. In addition, the measurement accuracy of non-scanning laser 3D imaging technology based on area array detectors is limited by the resolution and response fr
Externí odkaz:
https://doaj.org/article/70fd2d465fa24686944efe62bccbe91d
Publikováno v:
Micromachines, Vol 11, Iss 4, p 357 (2020)
Because of fast frequency response, high stiffness, and displacement resolution, the piezoelectric actuators (PEAs) are widely used in micro/nano driving field. However, the hysteresis nonlinearity behavior of the PEAs affects seriously the further i
Externí odkaz:
https://doaj.org/article/81aa10fe80fe467e97e09ed12fabc94f
Autor:
Wen Wang, Wenjun Qiu, He Yang, Haimei Wu, Guang Shi, Zhanfeng Chen, Keqing Lu, Kui Xiang, Bingfeng Ju
Publikováno v:
Sensors, Vol 19, Iss 12, p 2694 (2019)
Due to the flexible and compact structures, spherical joints are widely used in parallel manipulators and industrial robots. Real-time detection of the clearance between the ball and the socket in spherical joints is beneficial to compensate motion e
Externí odkaz:
https://doaj.org/article/7b320799ad134777933858215454f794
Publikováno v:
Micromachines, Vol 10, Iss 5, p 280 (2019)
Precision spherical joints are commonly employed as multiple degree-of-freedom (DOF) mechanical hinges in many engineering applications, e.g., robots and parallel manipulators. Real-time and precise measurement of the rotational angles of spherical j
Externí odkaz:
https://doaj.org/article/4412bb6154fd45fd810cacbd1a17f6d9