Experimental thermal regulation of an ultra-high precision metrology system by combining Modal Identification Method and Model Predictive Control

2016 ◽  
Vol 104 ◽  
pp. 504-515 ◽  
Author(s):  
K. Bouderbala ◽  
H. Nouira ◽  
M. Girault ◽  
E. Videcoq
Keyword(s):  
Model Predictive Control ◽  
High Precision ◽  
Predictive Control ◽  
Modal Identification ◽  
Thermal Regulation ◽  
Identification Method ◽  
Precision Metrology ◽  
Metrology System

An Optimization Model of High-Speed and High-Precision Machining Based on Model Predictive Control

2018 ◽  
Author(s):  
Jing Zhang ◽  
Jiexiong Ding ◽  
Qingzhao Li ◽  
Qicheng Ding ◽  
Zhong Jiang ◽  
...  
Keyword(s):  
Model Predictive Control ◽  
High Precision ◽  
Predictive Control ◽  
Feed Rate ◽  
Optimization Model ◽  
High Speed ◽  
Machining Process ◽  
Precision Machining ◽  
Contouring Error

In the multi-axis high-speed and high-precision machining process, the contouring error and the feed rate of tool tip and affect the quality of machined workpiece and the processing efficiency, respectively. The faster feed motion will result in greater tracking error of each axis. The contouring error which directly affects the quality of machined part is caused by the tracking errors of the axes. Obviously, it is difficult to improve the contouring accuracy and increase the feed rate simultaneously. To this end, a novel optimization model is developed here based on the model predictive control method. First, the feed servo model of translational and rotary axes are established, and the contouring error model is afterwards constructed. Subsequently, the optimization algorithm is derived to achieve the high processing speed, and input constraints are addressed to avoid violation of the performance limitation of the drivers. In addition, contouring error constraint, which is obtained by calculating the contouring error of the processed path, is addressed to high contour accuracy. Finally, a simulation is conducted to verify the effectiveness and superiority of the proposed method.

Model Reduction and Thermal Regulation by Model Predictive Control of a New Cylindricity Measuring Machine

2015 ◽  
Vol 36 (8) ◽  
pp. 2099-2114
Author(s):  
K. Bouderbala ◽  
M. Girault ◽  
E. Videcoq ◽  
H. Nouira ◽  
J. Salgado ◽  
...  
Keyword(s):  
Model Predictive Control ◽  
Model Reduction ◽  
Predictive Control ◽  
Thermal Regulation ◽  
Measuring Machine
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