scholarly journals Design, modeling and control of an XYZ flexure parallel mechanism with large motion range and decoupled kinematic structure

2008 ◽  
Author(s):  
Xue Yan Tang
Keyword(s):  
Parallel Mechanism ◽  
Kinematic Structure ◽  
Modeling And Control ◽  
Motion Range ◽  
Large Motion ◽  
And Control

A 6-DOF Compliant Joints-Based Precision Parallel Positioner System Driven by Dual Piezoelectric Actuators

2007 ◽  
Author(s):  
Wei Dong ◽  
Zhijiang Du ◽  
Lining Sun
Keyword(s):  
Parallel Mechanism ◽  
Load Capacity ◽  
Piezoelectric Actuators ◽  
Piezoelectric Ceramics ◽  
Parallel Structure ◽  
Nanometer Scale ◽  
Compliant Joints ◽  
Piezoelectric Motors ◽  
Motion Range ◽  
Large Motion

A precision compliant parallel-structure positioner is presented in this paper, which is dually driven by six piezoelectric motors and six piezoelectric ceramics respectively. This compliant system has a load capacity higher than 2 kg because the parallel mechanism is adopted as the main architecture. This system also can provide larger workspace and higher accuracy simultaneously compared with the conventional compliant positioner systems, because it perfectly integrates two kinds of piezoelectric actuators in one parallel system. The upper platform has the stroke of 10 mm in three linear motion directions and of 6 arc-degrees in three angle motion directions respectively for the adoption of piezoelectric motors as the large motion range actuators. The positioning resolution and repeatability of the upper platform is nanometer scale for the adoption of piezoelectric ceramics as the high precision actuators.

Modeling and Control for Plant Dynamics Based on Reinforcement Learning

2009 ◽  
Vol 129 (4) ◽  
pp. 363-367
Author(s):  
Tomoyuki Maeda ◽  
Makishi Nakayama ◽  
Hiroshi Narazaki ◽  
Akira Kitamura
Keyword(s):  
Reinforcement Learning ◽  
Modeling And Control ◽  
Plant Dynamics ◽  
And Control
Sign in / Sign up

Export Citation Format

Share Document