scholarly journals The Design and Implementation of a High-Precision Positioner Fixture

Micromachines ◽  
2021 ◽  
Vol 12 (10) ◽  
pp. 1227
Author(s):  
Xuesen Zhao ◽  
Rongkai Tan ◽  
Zhe Wang ◽  
Xicong Zou ◽  
Zhenjiang Hu ◽  
...  
Keyword(s):  
Theoretical Calculation ◽  
High Precision ◽  
Tooth Profile ◽  
Alignment Error ◽  
Test Results ◽  
Positioning Accuracy ◽  
Design And Implementation ◽  
Cumulative Error ◽  
Half Angle ◽  
Calculation Results

In this paper, a novel positioner fixture with a high repeated positioning accuracy and a high stiffness is proposed and investigated. A high-precision end-toothed disc is used to achieve the high repeated positioning accuracy of the designed positioner fixture. The mathematical models of the cumulative error of the tooth pitch, the tooth alignment error and the error of the tooth profile half-angle of the end-toothed disc are analyzed. The allowable tolerance values of the cumulative error of the tooth pitch, the tooth alignment error and the error of the tooth profile half-angle of the end-toothed disc are given. According to the theoretical calculation results, a prototype positioner fixture is fabricated and its repeated positioning accuracy and stiffness are tested. The test results indicate that the stiffness of the proposed positioner fixture is 1050.5 N/μm, which is larger than the previous positioner fixtures of the same type. The repeated positioning accuracy of the proposed positioner fixture in the x, y and z directions are ± 0.48 μm, ± 0.45 μm and ± 0.49 μm, respectively, which is significantly higher than the previous positioner fixtures.

Design and Simulation of New Tooth Profile of Flexspline for Harmonic Gear Drive

2015 ◽  
Vol 741 ◽  
pp. 99-107
Author(s):  
Li Zu ◽  
Lan Lan Feng ◽  
Yan Yang Sun
Keyword(s):  
Theoretical Calculation ◽  
Process Simulation ◽  
Cutting Tool ◽  
Parametric Design ◽  
Tooth Profile ◽  
Structure Parameters ◽  
Circular Arc ◽  
Gear Drive ◽  
Calculation Results ◽  
Normal Method

We focused on the parametric design and simulation of new tooth profile “circular arc-involute-circular arc” for flexspline in this paper. Based on the MATLAB software, the basic tooth profile of hob was designed. According to gear generating cutting principle, the simulation of processing for flexspline tooth profile has been realized. By tooth profile normal method, we calculated flexspline tooth profile which is conjugated with the basic tooth profile of the cutting tool, and gave the contrastive studies on process simulation and theoretical calculation. Results show that they are feasible in solving the new tooth profile of flexspline. When changing the key structure parameters, the different changing regulations of flexspline tooth profile can be gained. The research results are meaningful to improve the capacity of harmonic gear drive.

Theoretical Analysis on Settlement Calculation of Pile Foundation with Minimum Complementary Energy of Elastic Mechanics Based on the Ritz Variational Method

2013 ◽  
Vol 788 ◽  
pp. 636-639
Author(s):  
Zhi Ran Yao ◽  
Xin Sheng Ge
Keyword(s):  
Variational Method ◽  
Theoretical Calculation ◽  
Model Test ◽  
Pile Group ◽  
Test Results ◽  
Complementary Energy ◽  
Settlement Calculation ◽  
Calculation Results ◽  
Elastic Mechanics ◽  
Matlab Programming

In this paper, based on the model test，numerous deductions and calculations have been done, which was about the settlement of single pile and pile group in homogeneous foundation. With minimum complementary energy of elastic mechanics on the basis of the ritz variational method, through the MATLAB programming, theoretical calculation results were obtained, then comparison and analysis with the model test results were made to verify the feasibility of theoretical calculation.

Design and Implementation of FOG Based Gyrocompass

2013 ◽  
Vol 332 ◽  
pp. 124-129 ◽  
Author(s):  
Aqeel Abbas
Keyword(s):  
High Precision ◽  
Fiber Optic ◽  
Low Cost ◽  
Test Results ◽  
Fiber Optic Gyroscope ◽  
Design And Implementation ◽  
Computer Based ◽  
Novel Design

A novel design of gyrocompass consisting of a single axis Fiber Optic Gyroscope (FOG) and a Theodolite is proposed to meet the requirements of low-cost, fast and high-precision. This algorithm uses FOG data and theodolite encoder feedback to determine Azimuth. Micro computer based software is also discussed which was developed for implementation of this scheme; finally test results and plots are briefly presented which proves effectiveness of the designed methodology. By this design an accuracy of 0.08ois achieved in approximately 5 min time.

scholarly journals Sistem Pakar Diagnosis Penyakit pada Ayam dengan Menggunakan Metode Dempster Shafer

2020 ◽  
Vol 4 (1) ◽  
pp. 26-35
Author(s):  
Salsabila Putri Rajani Said ◽  
I Gede Pasek Suta Wijaya ◽  
Fitri Bimantoro
Keyword(s):  
Expert System ◽  
Theoretical Calculation ◽  
Calculation Method ◽  
Black Box ◽  
Test Results ◽  
System Diagnosis ◽  
Android Platform ◽  
Calculation Results ◽  
Black Box Testing

Chicken is one type of poultry that has many benefits, so the chicken can be an option for livestock. This research was conducted to create an expert system that helps provide information to farmers about poultry diseases, especially broilers. This expert system is built on the Android platform and uses the Dempster Shafer calculation method to get the diagnosis of chicken disease. The data used in this study consisted of 38 symptoms and 10 diseases data which were limited to diseases caused by bacteria and viruses. Each symptom has the value of belief given by 3 veterinarians. This study used four types of testing in the form of black-box testing, questionnaire testing, theoretical testing, and accuracy testing. The results of the accuracy testing of the 30 cases given are 92.22% and the system accuracy is 93.33% if the system diagnosis results are assumed to be valid because it is a subsection of expert diagnosis. For questionnaire testing using the MOS, parameters obtained 4.58 results from a scale of 5, as well as theoretical calculation tests that get the same calculation results between the results of expert diagnoses and system diagnoses. Based on the test results, the system built is good and appropriate.

Design and implementation of large space radio telescope antenna

2018 ◽  
Vol 07 (01n02) ◽  
pp. 1850008 ◽  
Author(s):  
Xiaofei Ma ◽  
Bo Gao ◽  
Huanxiao Li ◽  
Fan Liu ◽  
Tuanjie Li
Keyword(s):  
High Precision ◽  
Large Scale ◽  
Design Method ◽  
Mesh Optimization ◽  
Test Results ◽  
Key Factors ◽  
Large Space ◽  
Space Radio Telescope ◽  
Design And Implementation ◽  
Precision Design

The design of large high-precision antenna is one of the key factors restricting the application and development of antenna. This paper presents a design method for high precision large-scale umbrella-shaped antenna. Studies have been performed on the configuration, cable net forming, mesh optimization, error analysis and rib design to achieve the high precision design. Then, a high-precision umbrella antenna prototype is designed and manufactured based on this method. Finally, the test results of the prototype proved the correctness and feasibility of the proposed method.

Research on Mechanical Product Development Based on CAD Software

2014 ◽  
Vol 484-485 ◽  
pp. 933-937
Author(s):  
Fu Na Li ◽  
Lin Wei Yang ◽  
Ying Zeng
Keyword(s):  
Programming Language ◽  
Interface Design ◽  
Development Process ◽  
Visual Basic ◽  
Common Language ◽  
Test Results ◽  
Technology Application ◽  
Development System ◽  
Design And Implementation ◽  
Software Interface

This paper introduces analysis the development process of CAD technology, application of the AutoCAD software in engineering field and teaching as well as the significance of the development of two times the. This paper analyzes in detail the development of common language, and the use of Visual BASIC development and application of software based on AutoCAD. The author elaborates the software interface design and method calls AutoCAD in VB. Finally, the design and implementation of a programming language re-development system based on AutoCAD is concerned. The test results show that the developed AutoCAD two development system has good practical value.

The Research on Tooth Profile Total Deviation Measuring Method Based on Coordination Measuring Machine

2012 ◽  
Vol 184-185 ◽  
pp. 789-792
Author(s):  
Bing Li ◽  
Yu Lan Wei ◽  
Meng Dan Jin ◽  
Ying Ying Fan
Keyword(s):  
Mathematical Model ◽  
Data Processing ◽  
High Precision ◽  
Gear Tooth ◽  
Measuring Method ◽  
Tooth Profile ◽  
Cylindrical Gears ◽  
Total Deviation ◽  
Measuring Machine

Put forward a method that use scatter points which got in different places to measure the involution cylindrical gears, give a mathematical model that use the discrete points to sure the total deviation of gear tooth profile. The experience results show that this way is of high precision in measurement points, measurement an error data processing less intervention, etc.

Friction and Tribological Considerations for Nanometer Range Machining

2001 ◽  
Author(s):  
Som Chattopadhyay
Keyword(s):  
Mathematical Model ◽  
High Precision ◽  
Local Deformation ◽  
Experimental Results ◽  
Precision Machining ◽  
Complex Motion ◽  
Positioning Accuracy ◽  
Nanometer Range ◽  
Motion Characteristic ◽  
Low Speeds

Abstract Positioning accuracy within the range of nanometers is required for high precision machining applications. The implementation of such a range is difficult through the slides because of (a) irregular nature of friction at the slider-guideway interface, and (b) complex motion characteristic at very low speeds. The complexity arises due to the local deformation at the interface prior to breakaway, which is known as microdynamics. In this work prior experimental results exhibiting microdynamics have been appraised, and mathematical model developed to understand this behavior.

scholarly journals Design and Implementation of Wireless Sensor Cellular Network Based on Android Platform

2017 ◽  
Vol 13 (05) ◽  
pp. 56
Author(s):  
Yan Chen
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
Cellular Network ◽  
Data Communication ◽  
Wireless Sensor ◽  
Test Results ◽  
Design And Implementation ◽  
Gateway System ◽  
Android Platform ◽  
The Times

With the progress of the times, the network has grown into the people's work and life. The limitations of the traditional wireless sensor network (WSN) have become increasingly prominent, and it is obviously unable to meet the requirements of Internet access. Therefore, the 4G mobile Android system is used as a carrier, to design an application layer gateway system for realizing wireless communication between wireless sensor networks and heterogeneous cellular networks, so as to build wireless sensor cellular network. The design and implementation of the AP module, data receiving and forwarding module, network packet loss management and retransmission of the gateway systemis the focus, and then the implemented gateway system is tested. The test results show that the design of the Android platform wireless sensor network gateway system can connect the sensor network to the cellular network, so as to realize data communication, and to ensure that the data loss rate is less than 0.1%. Through testing, it is concluded that the system can meet the actual demand

Design of Six Freedom Vibration Acquisition System for Military Vehicle

2012 ◽  
Vol 430-432 ◽  
pp. 1866-1870
Author(s):  
Zhi Xiong Zhu ◽  
Shi Shun Zhu ◽  
Guo Jun Wang ◽  
Yan Zhu
Keyword(s):  
Reference System ◽  
Vibration Spectrum ◽  
Object Oriented ◽  
Linear Acceleration ◽  
Test Results ◽  
Collection System ◽  
Analysis And Design ◽  
Design And Implementation ◽  
Military Vehicle ◽  
Collection Data

Design and implementation of six freedom transportation vibration spectrum collection system is presented in this paper. The Attitude and Heading Reference System (AHRS) is used to capture signals including x, y, z, direction linear acceleration, angular rates around Z-axis and pitch, roll degree. The software’s architecture and modules for host computer is designed with object-oriented analysis and design techniques, and the software is implemented with VC++6.0. The test results show that the system was able to collect vehicular vibration information on time and the collection data was replayed on the vibration platform.

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