Research on Motion Profile Smooth Control Algorithm Based on Continuous Jerk

Guo Yong Zhao; Yu Gang Zhao; Rong Guo Hou

doi:10.4028/www.scientific.net/AMM.29-32.2002

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 29-32Research on Motion Profile Smooth Control...

Research on Motion Profile Smooth Control Algorithm Based on Continuous Jerk

Abstract:

Motion profile smooth control is significant to reduce the obvious impact on machine tool in high speed and high accuracy CNC machining. However, the jerk is discontinuous and brings about flexible impact on machine tool in the linear Acceleration/Deceleration (ab. Acc/Dec), exponent Acc/Dec and S curve Acc/Dec approach. In the paper, the CNC machine tool dynamic model is built up to analyze the cause of machine impact, to describe the mathematics and physics meanings of jerk. Then a new Acc/Dec approach in which the jerk is continuous is put forward. And the motion profile smooth control algorithm based on continuous jerk is developed in details according to the permissible maximum acceleration, the permissible maximum jerk, the machining program segment displacement and the instruction feedrate. The motion profile smooth control algorithm can achieve continuous jerk, reduce impact on machine tool effectively, and be important to high speed and high accuracy CNC machining.

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Periodical:

Applied Mechanics and Materials (Volumes 29-32)

Pages:

2002-2007

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.29-32.2002

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Online since:

August 2010

Authors:

Guo Yong Zhao, Yu Gang Zhao, Rong Guo Hou

Keywords:

CNC Machining, Continuous Jerk, High-Accuracy, High-Speed, Motion Profile, Smooth Control

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