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Abstract:
Analytical dynamic model for new type parallel machine tools is
established based on kinematic analysis, kane dynamic equation and
numeric-symbolic approach. Problem of deriving model matrix elements is
transformed into problem of solving for driving force under specified
conditions by kinematic and dynamic formulae. Real-time codes of dynamic
model matrix elements are generated automatically on computer.
Polynomial structure optimization method of real-time code is proposed
and parallel algorithm for analytical dynamic model is established. The
procedures of dynamic modelling and real-time code optimization can be
performed offline, and parallel calculation structure is adopted,
therefore on-line calculation amount and computing time can be reduced
greatly. The numerical examples of real-time code generation for dynamic
model matrix elements and simulation calculation are given for
illustration.
Keywords: Parallel
machine tool Dynamics Analytical model Polynomial
structure optimization Parallel calculation Numeric-symbolic
approach
CLC No:
TP242
四川省应用基础研究基金资助项目(02GY029-032,02GY029-033).
Received 30307, received in revised form 20030728
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