Supported by National Natural Science Foundation of China(Grant No.51005195);Natural Science Research Fund for Youth in Higher Education Institutions of Hebei Province,China(Grant No.QN2014175)
The pre-research on mobility analysis presented a unified-mobility formula and a methodology based on reciprocal screw theory by HUANG, which focused on classical and modem parallel mechanisms. However its range of ap...
Supported by National Natural Science Foundation of China(Grant No.51005195);Natural Science Research Fund for Youth in Higher Education Institutions of Hebei Province,China(Grant No.QN2014175)
Compared with the parallel mechanisms, the mobility analysis of the general multi-loop spatial mechanisms(GMSMs) is more difficult to obtain correct results. The reason is that its multi-loop is formed through sever...
Sponsored by the National Natural Science Foundation of China(Grant No.51005195,51205339)
Coupling is the significant characteristic of parallel mechanism,while it is just the coupling that brings about much difficulty for the configuration design,theoretical analysis and the development of the control sys...
supported by National Natural Science Foundation of China(Grant Nos.51275438,51005195);Hebei Provincial Natural Science Foundation of(Grant No.E2011203214);Development Program of Qinhuangdao City,China(Grant No.201101A069)
The determination of virtual constraints is always one of the key and difficult problems in traditional mobility calculation. To make mobility calculation simple, considering avoiding virtual constraints, some new for...
Sponsored by the National Natural Science Foundation of China(Grant No.51275443 and 51005195);Key Project of Chinese Ministry of Education(Grant No.212012);Research Fund for the Doctoral Program of Higher Education of China(Grant No.20111333120004);Natural Science Foundationof Hebei Province(Grant No.E2012203034)
As one of the typical less-mobility parallel mechanisms, the spherical parallel mechanism Up.s with two degrees of freedom (2-DOF) possess high order overconstraints, and the calculation of its stiffness is partly d...