The Application of Self-tuning Adaptive Control and Cross-Couple Control in Retrofited Milling Machine
碩士 === 華梵大學 === 機電工程研究所 === 90 === In this paper, the control plant is a ball screw actuated milling machine table which has been retrofit with D.C. servo motor control. The retrofit milling machine has nonlinear time-varying behaviors because of the effect of irregular coulomb friction of the slidi...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
2002
|
| Online Access: | http://ndltd.ncl.edu.tw/handle/66849650772454937017 |
| Summary: | 碩士 === 華梵大學 === 機電工程研究所 === 90 === In this paper, the control plant is a ball screw actuated milling machine table which has been retrofit with D.C. servo motor control. The retrofit milling machine has nonlinear time-varying behaviors because of the effect of irregular coulomb friction of the sliding surface and obvious backlash. Thus, it is difficult for a conventional digital controller to achieve required contouring accuracy and assure stability of closed-loop system. To improve contouring performance of the retrofit milling machine, a self-tuning adaptive control strategy, combined with cross-coupled control of axial motion is proposed. This control scheme can assure the stability problem of closed-loop system. Experimental results are presented to contouring accuracy improvement by the proposed control method.
|
|---|