The Mechatroller Integral Model of Vertical Machine Tool by Using State Space Method

• Main Authors: WU, MENG-HE, 吳孟和
• Other Authors: LIU, DE-SHIN
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/pfjje4

碩士 === 國立中正大學 === 機械工程系研究所 === 105 === In recent year, in order to get the high-speed and high-accuracy remand of the machine tool. More researcher co-simulate between the structure and controller by using multibody software and Matlab/Simulink to predict the dynamic behavior. However, this method need to use two different software to solve. Therefore, this thesis develops one integral model included structure and controller to predict the machine tool dynamic behavior and diagonal the component for the real machine tool. This research thesis develops some related technology of state-space mechatroller included (1) Reduce the flexibility of the structure on interface to match the natural frequency and mode shape of EMA (experiment modal analysis). We can also get the structure frequency from the state-space matrix directly. (2) We can combine state-space model with control model to create the mechatroller model to simulate the dynamic motion and match with Recurdyn. It means that we can do the mechatroller integral analysis by using just one software directly. (3) The response of mechatroller dynamic analysis result included the acceleration signal of each direction and flexible deform signal, they all have the vibration of natural frequency. It matches the characteristic of real machine tool. (4) The model can show different signal behavior when we use different preload of the ball screw. We can use this method to diagonal the behavior of each component. (5) We can control the interested structure parameter flexibility in the state-space matrix. (6) After we change the dynamic model into the linear mathematical model, which is state-space model, we can get the system response to get the Bode diagram directly. To sum up, the distribution of this thesis is developing one mathematical model included the characteristic of real machine tool. On the one hand, we can simulate the dynamic analysis in one software and save the simulation time. On the other hand, we can predict the characteristic of machine and diagonal each component.