A trajectory optimization method for improved tracking of motion commands using CNC machines that experience unwanted vibration
This paper presents a trajectory optimization method for minimizing tracking errors in CNC machines that experience unwanted vibration. The motion command sent to the machine is parameterized using B-splines whose basis functions are filtered using a model of the machine's dynamics. The control...
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| Published in | CIRP annals Vol. 65; no. 1; pp. 373 - 376 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier Ltd
2016
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0007-8506 |
| DOI | 10.1016/j.cirp.2016.04.100 |
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| Abstract | This paper presents a trajectory optimization method for minimizing tracking errors in CNC machines that experience unwanted vibration. The motion command sent to the machine is parameterized using B-splines whose basis functions are filtered using a model of the machine's dynamics. The control points associated with the filtered basis functions are then selected to minimize tracking errors subject to the kinematic limits of the machine. The proposed method is shown to be very systematic and easy to use, and it does not sacrifice tracking speed. Experiments are used to demonstrate its superior performance compared to an existing method. |
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| AbstractList | This paper presents a trajectory optimization method for minimizing tracking errors in CNC machines that experience unwanted vibration. The motion command sent to the machine is parameterized using B-splines whose basis functions are filtered using a model of the machine's dynamics. The control points associated with the filtered basis functions are then selected to minimize tracking errors subject to the kinematic limits of the machine. The proposed method is shown to be very systematic and easy to use, and it does not sacrifice tracking speed. Experiments are used to demonstrate its superior performance compared to an existing method. |
| Author | Okwudire, C. Duan, M. Ramani, K. |
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| Cites_doi | 10.1016/S0890-6955(01)00004-9 10.1016/j.cirp.2015.04.102 10.1016/j.cirp.2012.03.132 10.1016/j.ijmachtools.2014.08.004 10.1016/j.cirp.2007.05.088 10.1016/j.cirp.2009.03.045 10.1016/j.ijmachtools.2015.08.002 10.1016/S0007-8506(07)60707-0 10.1016/j.cirp.2015.04.105 10.1016/S0947-3580(99)70155-X 10.1016/j.cirp.2007.05.087 10.1016/j.cirp.2012.03.135 10.1016/j.cirp.2011.05.010 10.1016/j.ymssp.2007.11.017 |
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| Keywords | Computer numerical control (CNC) Trajectory optimization Vibration |
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| SubjectTerms | Basis functions Commands Computer numerical control Computer numerical control (CNC) Kinematics Tracking Tracking errors Trajectory optimization Vibration |
| Title | A trajectory optimization method for improved tracking of motion commands using CNC machines that experience unwanted vibration |
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