Abstract: According to the structure of radial compliance mechanisms, based on the fundamental principle of plane linkage mechanism, the kinematics model of radial compliance mechanisms in general profiles scroll compressor ,the restriction condition of contact point, the running state of orbit scroll and compliance mechanism, stability index, the mesh state between the orbit scroll and fix scroll, and the error compensation mechanism are analyzed, It demonstrates the inherent relation between radial compliance mechanism and the running stability of orbit scroll, the profile type and mesh precision. So this theory will make the foundation for the scroll compressor precision analysis and synthesis.

Key words: Compliance mechanism, Error compensation, General profile, Kinematics, Scroll compressor