Design and Comparative Analysis of Linear Guides for Refreshable Braille Displays

2017 ◽  
Author(s):  
Varan Gupta ◽  
Pulkit Sapra ◽  
Suman Muralikrishnan ◽  
M. Balakrishnan ◽  
P. V. M. Rao
Keyword(s):  
Comparative Analysis ◽  
Cost Efficiency ◽  
Compliant Mechanisms ◽  
Low Cost ◽  
Industrial Applications ◽  
Linear Motion ◽  
Motion System ◽  
Friction Cost ◽  
Cost Feasibility

Linear guides are extensively employed in several industrial applications. Miniaturization, minimal friction, cost efficiency and low maintenance are the major challenges faced while developing a linear motion system. This paper presents design and realization of such systems, overcoming the aforementioned challenges. Linear guidance mechanisms, suitable for implementing latching in Refreshable Braille Displays are proposed, where uniform behavior under eccentric loading is required. Several low cost, reliable and efficient guide mechanisms with predetermined dimensional constraints have been designed. Seven mechanisms are illustrated and analyzed in this paper, which includes both, traditional contact-based mechanisms and compliant mechanisms that offer contact-less motion. The paper further compares the functionality, cost feasibility and ease of manufacturing and assembly of these mechanisms.

Optimization design of strengthening components for linear motion system of the novel optical testing target

2018 ◽  
Vol 47 (6) ◽  
pp. 617003
Author(s):  
张绍军 Zhang Shaojun ◽  
高云国 Gao Yunguo ◽  
薛向尧 Xue Xiangyao
Keyword(s):  
Optimization Design ◽  
The Novel ◽  
Linear Motion ◽  
Optical Testing ◽  
Motion System

Analysis and Modeling of a Pneumatic Servo System Based on Backstepping Design

2011 ◽  
Vol 133 (6) ◽  
Author(s):  
Chia-Hua Lu ◽  
Yean-Ren Hwang ◽  
Yu-Ta Shen ◽  
Tzu-Yu Wang
Keyword(s):  
Sliding Mode ◽  
Low Cost ◽  
Tracking Error ◽  
Backstepping Design ◽  
Servo Systems ◽  
Air Motor ◽  
Motion System ◽  
Control Precision ◽  
Pneumatic Servo System ◽  
Table Motion

Air motors have often been utilized in industrial servo systems in the automation industry due to their advantages such as small volume, low cost, light weight, convenience of operation, and no overheating problems. Recently, the development of control technology has improved, making the requirements for control precision higher than ever before. Accurate control performance in pneumatic systems is facilitated by the implementation of nonlinear control techniques. The purpose of this study is to analyze the behavior of a biaxial pneumatic table motion system with a vane-type air motor, and to design a backstepping sliding mode controller for this system. A proportional integral derivative controller compared with this new backstepping design. The tracking circle error and tracking error of the two axes are noted. The experimental results show that accurate tracking circle trajectory performance can be achieved with the proposed controller.

Synthesis of Programmable Mechanisms Using Adjustable Dyads

1997 ◽  
Vol 119 (2) ◽  
pp. 232-237 ◽  
Author(s):  
T. Chuenchom ◽  
S. Kota
Keyword(s):  
High Speed ◽  
Low Cost ◽  
Synthesis Method ◽  
Point Theory ◽  
Industrial Applications ◽  
Synthesis Methods ◽  
Linkage Mechanism ◽  
Manufacturing Automation ◽  
Multiple Tasks ◽  
High Production

Conventional hard automation such as linkage mechanisms and cam-driven mechanisms provide high speed capability at a low cost, but fail to provide the flexibility required in many industrial applications. On the other hand, for most manufacturing automation applications in high production industries, expensive multi-axis robots are employed for simple repetitive operations that require only limited flexibility. In order to provide a true middle ground between conventional mechanism-based hard automation and overly flexible anthropomorphic robots, we incorporate flexibility in conventional mechanisms, thereby creating “programmable mechanisms” or Adjustable Robotic Mechanisms (ARMs). This paper introduces the concept of ARMs and presents generalized analytical methods for designing adjustable mechanisms based on synthesis of adjustable dyads. The synthesis methods presented here, which are extensions of the well-known Burmester precision point theory, enable one to design multi-purpose mechanisms for multiple sets of precision points, thereby enabling conventional mechanisms to perform multiple tasks. The analytical synthesis method has been implemented in a computer program that generates all adjustable dyad solutions for given sets of precision points. Two or more adjustable dyads are assembled together to form a programmable linkage mechanism that performs multiple tasks. Synthesis formulations and a design example illustrating the analytical and computer-aided synthesis methods are presented.

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