Parallel Kinematic Mechanism Robot with Hybrid Eye-Hand Visual Servo System for Conveyer Object Tracking and Fetching
Date Issued
2014
Date
2014
Author(s)
Chou, Shih-Che
Abstract
The objective of this research is to develop conveyer object tracking and fetching system. The traditional visual servo system for parallel kinematic mechanism robot is based on Eye-to-hand method which suffers from the narrow field of view (FOV). The basic step of moving assembling is multiple objects tracking which needs broad work space and big FOV of the parallel kinematic mechanism robot. In this paper, a Hybrid Eye-to-hand and Eye-in-hand Visual Servo System for parallel kinematic mechanism robot is proposed. Via this hybrid system, the parallel kinematic mechanism robot can achieve (multiple) object tracking and fetching with priority planning we designed. The eye-to-hand visual system with low resolution camera provides the estimations of the velocities and poses of the workpieces. Also the fetching priority is planned with this system. All aforementioned information is transferred to the eye-in-hand visual servo system for further use. Once the object appeared in the FOV of eye-in-hand system in the estimated position, the high resolution camera of the system is employed to acquire the pose information of the object with high accuracy and track it frame by frame. The hybrid system is successfully demonstrated and implemented on parallel kinematic mechanism robot which not only broadens the working space of parallel kinematic mechanism robot but also achieves great efficiency and accuracy.
Subjects
並聯式機器人
視覺伺服
混合型視覺系統
傳送帶
追蹤
Type
thesis
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