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Hybrid Focre/Position Control and Experimental Investigation of 5-UPS/PRPU Parallel Machine Tool with Redundant Actuation
Author: TangHaiTao
Tutor: ZhaoYongSheng
School: Yanshan University
Course: Mechanical and Electronic Engineering
Keywords: Parallel Machine Tools Redundant drive Open CNC System Driving force Hybrid force / position control PMAC Dynamic performance
CLC: TG65
Type: Master's thesis
Year: 2011
Downloads: 87
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Abstract
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Parallel machine tool is cross - integration of mechanical engineering, electronic engineering, computer science , automatic control discipline achievements of contemporary science and technology research and development of the most active areas of . Parallel machine tool the redundant drive can increase the work space , to overcome its singular position , improve its driver smooth increase its carrying capacity and accuracy . This article is based on the development of a redundant parallel machine tool demand a redundant parallel machine tool drive 5-UPS/PRPU five degrees of freedom for the object , based on the location of the original control system , and its hybrid force / position control system for the in-depth study mainly include the following aspects: on the parallel machine tool development and its characteristics , elaborate parallel machine tools as well as redundant drive parallel machine development at home and abroad , and introduced a generation of open CNC system , characteristics and structure , Based on this , pointing out that the main problem facing the redundant drive parallel machine Tool Research Institute . Analysis of the inverse solution of the redundant to drive 5-UPS/PRPU parallel machine , D'Alembert principle for solving the planning redundancy branched driving force , laid a theoretical foundation for the realization of the hybrid force / position . Original hardware system based the redundant drive 5-UPS/PRPU parallel machine tool design more reasonable of the two hardware to build the program , choose the best program to build a new hardware system . Original position control basis in the redundant drive 5-UPS/PRPU parallel machine tool , force control control redundancy branched , and the dynamics differential predictive control strategy ; , the whole force in order to ensure the accuracy of machine movement / bit hybrid control strategy . Based control strategy , using Visual Basic 6.0 control software feature development , and carried out a detailed introduction to the main function . AC servo drive PMAC PID servo filter notch works and related parameters set force for the redundant drive 5-UPS/PRPU parallel machine tool / hybrid systems , debugging and running, and finished dynamics performance testing experiment. The experimental results show that the force / position hybrid control strategy accuracy and feasibility of the NC software .
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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal cutting and machine tools > Machines and processing
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