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Abstract: The positioning accuracy and positioning time of CNC system
are main performance criteria for industrial applications. The
acceleration/deceleration modes, especially deceleration mode, have an
important effect on them. Some problems in the conventional linear
deceleration algorithm are analyzed. Then an improved linear
acceleration /deceleration is introduced. In this algorithm, the
deceleration point is predicted exactly, and then the deceleration point
error is compensated for at higher feedrates. Compared with that of
conventional linear acceleration and deceleration algorithm, the system
performance is improved significantly. It is confirmed by many
simulations and experiments.
Key words: Positioning accuracy Positioning time Linear
acceleration/deceleration algorithm CNC
CLC No: TP273
高等学校博士学科点专项科研基金资助项目(98024834). Received 20011224, received in
revised form 20021213
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