A New Structure Design Method for Improve Modular Joint Output Performance in Modular Robot

2014 ◽  
Vol 635-637 ◽  
pp. 1299-1302 ◽  
Author(s):  
Xiao Li ◽  
Han Xu Sun ◽  
Ying Wen Tang ◽  
Jing Zhou Song
Keyword(s):  
Design Method ◽  
Structure Design ◽  
Design Parameters ◽  
Modular Robot ◽  
Positioning Accuracy ◽  
Brushless Dc ◽  
Output Performance ◽  
Output Torque ◽  
Novel Structure ◽  
Dc Servomotor

A novel structure design method to improve the output performance in course of modular robot is presented in this paper. The new design parameter of modular joint is defined based on analysis of existing joint. Output torque and Max speed is increased by means of different Brushless DC-Servomotor and harmonic reducer in limited interspace. The repeated positioning accuracy is not reduced when output torque and Max speed are increased. And parts of the process parameters is improved. The new design parameters show that the design method is feasible.

scholarly journals A Globally Optimal Robust Design Method for Complex Systems

Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-25
Author(s):  
Yue Chen ◽  
Jian Shi ◽  
Xiao-jian Yi
Keyword(s):  
Complex Systems ◽  
Design Parameter ◽  
Design Method ◽  
Solution Space ◽  
Maximum Size ◽  
Design Criterion ◽  
Design Parameters ◽  
Engineering System ◽  
Output Performance ◽  
Maximum Solution

The uncertainty of the engineering system increases with the growing complexity of the engineering system; therefore, the tolerance to the uncertainty is essential. In the design phase, the output performance should reach the design criterion, even under large variations of design parameters. The tolerance to design parameter variations may be measured by the size of a solution space in which the output performance is guaranteed to deliver the required performance. In order to decouple dimensions, a maximum solution hyperbox, expressed by intervals with respect to each design parameter, is sought. The proposed approach combines the metaheuristic algorithm with the DIRECT algorithm where the former is used to seek the maximum size of hyperbox, and the latter is used as a checking technique that guarantees the obtained hyperbox is indeed a solution hyperbox. There are three advantages of the proposed approach. First, it is a global search and has a considerable high possibility to produce the globally maximum solution hyperbox. Second, it can be used for both analytically known and black-box performance functions. Third, it guarantees that any point selected within the obtained hyperbox satisfies the performance criterion as long as the performance function is continuous. Furthermore, the proposed approach is illustrated by numerical examples and real examples of complex systems. Results show that the proposed approach outperforms the GHZ and CES-IA methods in the literature.

A Novel Structure Design Method Based on Knowledge Template

2012 ◽  
Vol 159 ◽  
pp. 18-22
Author(s):  
Rui Song Jiang ◽  
Xin Fa Chen ◽  
Da Yong Feng ◽  
Feng Jun Wang
Keyword(s):  
Turbine Blade ◽  
Design Process ◽  
Investment Casting ◽  
Design Method ◽  
Structure Design ◽  
Design System ◽  
Construction Methods ◽  
Novel Structure ◽  
Base Design

In this study, a novel structure design method based on knowledge template was prompted. The notion and construction methods of knowledge template were introduced. Moreover, the knowledge template based design process was represented. The knowledge templates of investment casting die bases of turbine blade were established and a design system for die base was developed. The system provides designers with a semi-automated approach for the die base design. Finally, several sample applications for investment casting die base of turbine blade were presented for demonstration.

Product Ergonomics Design Driven by Parametric Human Body Model

2011 ◽  
Vol 215 ◽  
pp. 136-143 ◽  
Author(s):  
B. Jiang ◽  
Chun Fu Lu ◽  
Xiao Jian Liu
Keyword(s):  
Human Body ◽  
Design Method ◽  
Structure Design ◽  
Design Parameters ◽  
Surface Model ◽  
Structure Model ◽  
Human Body Model ◽  
Body Model ◽  
Driving Model ◽  
Human Body Models

Considering the demands for product ergonomics design, the paper proposed a driven design method for product’s shape and structure design through the manipulation of human body models. Based on the anthropometry data, a parametric human body driving model system is established with three layers, which are structure model, dimension model and surface model. The driven design method of product ergonomics design is realized, in which human body data are directly mapped to product design parameters. The driven design method provides a rational way to utilize ergonomics design principles and guarantee higher efficiency and more reliability. The method is tested in seat design examples.

A Novel Structure Design of 4-DOF Spatial Compliant Parallel Manipulator

2011 ◽  
Vol 474-476 ◽  
pp. 1069-1074
Author(s):  
Da Chang Zhu ◽  
Qi Hua Gu ◽  
Liang Wang ◽  
Fan Xiao
Keyword(s):  
Parallel Manipulator ◽  
Design Method ◽  
Structure Design ◽  
Geometrical Constraint ◽  
Ansys Software ◽  
Traditional Design ◽  
Novel Structure

A novel type of 4-RPUR spatial compliant parallel manipulator which named whole compliant parallel manipulator (WCPM) is presented in this paper. Compared with traditional design method, a novel 4-RPUR type spatial compliant parallel manipulator which satisfy the geometrical constraint conditions in spatial is proposed. By using ANSYS software, the proposed two kinds of compliant parallel manipulator are analyzed. The effectiveness of the proposed method is verified by simulation and experiments.

Design of Origami Sheets for Foldable Object Fabrication

2012 ◽  
Author(s):  
Dongping Deng ◽  
Yong Chen
Keyword(s):  
Design Method ◽  
Soft Materials ◽  
Structure Design ◽  
Test Cases ◽  
Future Design ◽  
Novel Structure ◽  
Scale Levels ◽  
Multiple Materials ◽  
Reconfigurable Structures ◽  
Silicon Molding

Reconfigurable structures that are enabled through the integration of multiple materials are important for future design and manufacturing practice. We investigate one of such reconfigurable structures — an origami sheet, which can be designed based on a 3D object and unfolded into a 2D sheet with complex creases. A fabrication approach based on a hybrid manufacturing process by integrating layer-based additive manufacturing and silicon molding techniques is developed. Related challenges on designing creases for given folding requirements and the related material properties are discussed. A novel structure design is presented to ensure the fabricated creases that are in soft materials can be folded and unfolded without failures. The design method can be applied to different scale levels. The origami sheets for test cases in different complexity have been tested. The experimental results illustrate that the designed and fabricated origami sheets can be folded and used for product components with reconfigurable shapes.

Piezoelectric stick-slip actuators with flexure hinge mechanisms: A review

2022 ◽  
pp. 1045389X2110722
Author(s):  
Guangda Qiao ◽  
Hengyu Li ◽  
Xiaohui Lu ◽  
Jianming Wen ◽  
Tinghai Cheng
Keyword(s):  
Load Capacity ◽  
Translational Motion ◽  
Structure Design ◽  
Flexure Hinge ◽  
Stick Slip ◽  
Positioning Accuracy ◽  
Output Performance ◽  
Analysis Methods ◽  
Working Principle ◽  
Improvement Scheme

Piezoelectric stick-slip actuators (PSSAs) are famous for ultimate working condition adaptability, simple structure, and positioning accuracy. To meet the demand of industrial application, lots of PSSAs designed with flexure hinge mechanisms (FHMs-PSSAs) have been developed to realize the requirements of translational motion, rotational motion, multi-degree-of-freedom (multi-DOF) motion. The output performance of the FHMs-PSSAs has been greatly improved, including load capacity, speed, and accuracy; moreover, some approaches to solve the problem of the backward motion are provided as well. In this work, the working principle of FHMs-PSSAs is introduced, and the excitation signals applicable to FHMs-PSSAs are summarized. Based on the current research and development status, the progress of structure design of FHMs-PSSAs is introduced in accordance with translatory FHMs-PSSAs, rotary FHMs-PSSAs, and multi-DOF FHMs-PSSAs. Additionally, the developed analysis methods and design schemes to improve the performance are introduced, including theoretical analysis methods, consistency scheme of forward and reverse performance, suppression scheme of the backward motion, and improvement scheme of positioning accuracy. The significance of this work can be regarded as a further supplement to the previous review articles on the PSSAs, which will provide a reference and guidance for the future development of FHMs-PSSAs.

Structural Optimization of Double Swirler Based on Experimental Design

2013 ◽  
Vol 411-414 ◽  
pp. 2997-3005
Author(s):  
Min Huang ◽  
You Long Wang ◽  
Shi Feng Xiong ◽  
Yao Kang
Keyword(s):  
Experimental Design ◽  
Single Phase ◽  
Design Method ◽  
Structure Design ◽  
Design Parameters ◽  
Analysis Model ◽  
Single Phase Flow ◽  
Space Filling ◽  
Experimental Design Method ◽  
Optimization Parameters

Based on several structure optimization parameters for the description of the geometric features of a double oblique radial swirler, simplified structure design parameters and value interval were determined. And, the CFD analysis model of the swirler is established. Based on the approaches of multi-wheel space filling experimental designs, 17 design schemes were gained, then CFD numberical experiments on the cold single-phase flow field was developed to all design schemes. Finally, the optimal design scheme were found by numberical space filling experimental design method in a several turn.

Study on the Theory and Methods of Bolt-Shotcrete Support for Weak Surrounding Rock Based on Reliability Analysis

2013 ◽  
Vol 444-445 ◽  
pp. 1446-1453
Author(s):  
Zhe Ou ◽  
Cong Xin Chen ◽  
Guan Wen Cheng ◽  
Yun Zheng
Keyword(s):  
Reliability Analysis ◽  
Support System ◽  
Design Method ◽  
Soft Rock ◽  
Reliability Evaluation ◽  
Structure Design ◽  
Surrounding Rock ◽  
Design Parameters ◽  
Weak Surrounding Rock ◽  
Analysis Equation

The evaluation of stability and reliability of support system for tunnel weak surrounding rock are difficult issues of concern in rock and soil engineering. Aiming at the problem of parameter design and reliability evaluation of tunnel weak surrounding rock and bolt-shotcrete support system, the deformation, failure mechanism and physical mechanical properties of weak surrounding rock are analyzed as well as the mechanism of bolt-shotcrete support in soft rock is studied. And the reliability analysis equation of bolt-shotcrete support in two kinds of weak surrounding rock (nearly horizontal layered mechanics medium and continuum mechanics medium) is established. The quantitative soft rock supporting theory is introduced into the reliability analysis equation. The calculation formula of two important design parameters of anchoring force and bolt spacing in bolt-shotcrete support is established. Finally an engineering example is adopted to prove the rationality of the calculation results. Therefor this paper provides theoretical basis and design method for supporting structure design and reliability evaluation of tunnel weak surrounding rock.

scholarly journals A modular design method based on TRIZ and AD and its application to cutter changing robot

2021 ◽  
Vol 13 (7) ◽  
pp. 168781402110343
Author(s):  
Mei Yang ◽  
Yimin Xia ◽  
Lianhui Jia ◽  
Dujuan Wang ◽  
Zhiyong Ji
Keyword(s):  
Modular Design ◽  
Design Method ◽  
Idea Generation ◽  
Design Parameters ◽  
Problem Analysis ◽  
Concept Design ◽  
Functional Requirements ◽  
Shield Tunneling ◽  
Structural Hierarchy ◽  
And Performance

Modular design, Axiomatic design (AD) and Theory of inventive problem solving (TRIZ) have been increasingly popularized in concept design of modern mechanical product. Each method has their own advantages and drawbacks. The benefit of modular design is reducing the product design period, and AD has the capability of problem analysis, while TRIZ’s expertise is innovative idea generation. According to the complementarity of these three approaches, an innovative and systematic methodology is proposed to design big complex mechanical system. Firstly, the module partition is executed based on scenario decomposition. Then, the behavior attributes of modules are listed to find the design contradiction, including motion form, spatial constraints, and performance requirements. TRIZ tools are employed to deal with the contradictions between behavior attributes. The decomposition and mapping of functional requirements and design parameters are carried out to construct the structural hierarchy of each module. Then, modules are integrated considering the connections between each other. Finally, the operation steps in application scenario are designed in temporal and spatial dimensions. Design of cutter changing robot for shield tunneling machine is taken as an example to validate the feasibility and effectiveness of the proposed method.

Sign in / Sign up

Export Citation Format

Share Document