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Chatter Identification of Face Milling Operation via Time-Frequency and Fourier Analysis 基于时频和傅立叶分析的铣削加工颤振识别
International Journal of Automation and Smart Technology Pub Date : 2016-03-01 DOI: 10.5875/AUSMT.V6I1.1018
Ching-chih Wei, Meng-Kun Liu, Guoheng Huang
{"title":"Chatter Identification of Face Milling Operation via Time-Frequency and Fourier Analysis","authors":"Ching-chih Wei, Meng-Kun Liu, Guoheng Huang","doi":"10.5875/AUSMT.V6I1.1018","DOIUrl":"https://doi.org/10.5875/AUSMT.V6I1.1018","url":null,"abstract":"Chatter is generally defined as self-generated vibrations from the interaction between tool and workpiece.  It is the most critical vibration in machining operations and can decrease the surface quality and cause the premature tool wear. Chatter creates erroneous vibrations on the workpiece surface. However, even though the spatial response of chatter is still bounded, its frequency response would become unstably broadband, emitting high-pitched sounds. The deterioration in both time and frequency domains implies that chatter is a route-to-chaos process. To capture the time-frequency characteristics of chatter, instantaneous frequency is applied to extract the relevant force vibration of machining chatter, and the energy ratio approach is used to develop a discrete stability lobe diagram of a face-milling operation. The proposed method is validated by measuring the surface roughness of the workpiece.","PeriodicalId":38109,"journal":{"name":"International Journal of Automation and Smart Technology","volume":"6 1","pages":"25-36"},"PeriodicalIF":0.0,"publicationDate":"2016-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71161875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Auto Target Tracking Robot Design Based on Smartphone 基于智能手机的自动目标跟踪机器人设计
International Journal of Automation and Smart Technology Pub Date : 2016-03-01 DOI: 10.5875/AUSMT.V6I1.1044
Shuen-De Wu, K. S. You
{"title":"Auto Target Tracking Robot Design Based on Smartphone","authors":"Shuen-De Wu, K. S. You","doi":"10.5875/AUSMT.V6I1.1044","DOIUrl":"https://doi.org/10.5875/AUSMT.V6I1.1044","url":null,"abstract":"This paper describes a robot tracking control design based on a smartphone using a commercial microprocessor. The system hardware consists of four major parts: an Android smartphone with an embedded camera, a Microchip microprocessor, a motor driver circuit and an Attacknid robot. First, an image of the surrounding environment is captured by the high definition camera embedded in the smartphone. The target is then recognized from the image using an algorithm developed in Android OS and OpenCV library. Third, motion control and laser activation strategies are achieved using the proposed algorithm implemented in Java. Fourth, the motion commands are delivered to the microchip processor through a USB interface. Finally, the processor produces a pulse width modulation (PWM) voltage to control the robot’s motion and activate the laser diode according commands sent from the smart phone. Experimental results demonstrate the feasibility of this proposed architecture.","PeriodicalId":38109,"journal":{"name":"International Journal of Automation and Smart Technology","volume":"6 1","pages":"51-56"},"PeriodicalIF":0.0,"publicationDate":"2016-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71161536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A Point Cloud Alignment Algorithm Based on Stereo Vision Using Random Pattern Projection 一种基于立体视觉的随机模式投影点云对齐算法
International Journal of Automation and Smart Technology Pub Date : 2016-03-01 DOI: 10.5875/AUSMT.V6I1.1032
Chen-Sheng Chen, Meizhi Huang, C. Yeh, Chien-Liang Huang
{"title":"A Point Cloud Alignment Algorithm Based on Stereo Vision Using Random Pattern Projection","authors":"Chen-Sheng Chen, Meizhi Huang, C. Yeh, Chien-Liang Huang","doi":"10.5875/AUSMT.V6I1.1032","DOIUrl":"https://doi.org/10.5875/AUSMT.V6I1.1032","url":null,"abstract":"This paper proposes a point cloud alignment algorithm based on stereo vision using Random Pattern Projection (RPP). In the application of stereo vision, it is rather difficult to find correspondences between stereo images of texture-less objects. To overcome this issue, RPP is used to enhance the object’s features, thus increasing the accuracy of the identified correspondences of the stereo images. In the 3D alignment algorithm, the down sample technique is used to filter out the outliers of the point cloud data to improve system efficiency. Furthermore, the extracted features of the down sample point cloud data were applied in the matching process. Finally, the object’s pose was estimated by the alignment algorithm based on object features. In experiments, the maximum error and standard deviation of rotation are respectively about 0.031°and 0.199°, while the maximum error and standard deviation of translation are respectively about 0.565 mm and 0.902 mm . The execution time for pose estimation is about 230ms.","PeriodicalId":38109,"journal":{"name":"International Journal of Automation and Smart Technology","volume":"6 1","pages":"45-50"},"PeriodicalIF":0.0,"publicationDate":"2016-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71161931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Intelligent Image Processing System for Real-Time Detection of Surface Flaws 面向表面缺陷实时检测的智能图像处理系统
International Journal of Automation and Smart Technology Pub Date : 2016-03-01 DOI: 10.5875/AUSMT.V6I1.1006
Y. Chou, W. Liao, Ming Chang, P. Lin
{"title":"An Intelligent Image Processing System for Real-Time Detection of Surface Flaws","authors":"Y. Chou, W. Liao, Ming Chang, P. Lin","doi":"10.5875/AUSMT.V6I1.1006","DOIUrl":"https://doi.org/10.5875/AUSMT.V6I1.1006","url":null,"abstract":"This paper presents an intelligent parallel image processing system, PVCS (Parallel Visual Computing System), to handle in-line surface defect detection for large objects. PVCS is a parallel expansion of a previously-reported non-destructive Compute Unified Device Architecture (CUDA)-enabled optical inspection system to accommodate large test objects. PVCS is heterogeneous both in terms of hardware and software. From the hardware perspective, PVCS consists of multiple CPUs and GPUs; from the software perspective, PVCS adopts the Message Passing Interface (MPI) and CUDA programming models. A parallel prototype system, consisting of three CPUs and two GPUs, is used to inspect a simulated object with an area eight times greater than that of the real object in our previous work. Given the same resolution requirements, the simulation results show that PVCS can obtain the correct number of defects within a large-size image at a satisfactory processing rate.","PeriodicalId":38109,"journal":{"name":"International Journal of Automation and Smart Technology","volume":"6 1","pages":"37-44"},"PeriodicalIF":0.0,"publicationDate":"2016-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71161411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design and Evaluation of the Walking Cane Handle Grip 手杖柄握把的设计与评价
International Journal of Automation and Smart Technology Pub Date : 2015-12-01 DOI: 10.5875/AUSMT.V5I4.927
K. Taniguchi, A. Takanishi
{"title":"Design and Evaluation of the Walking Cane Handle Grip","authors":"K. Taniguchi, A. Takanishi","doi":"10.5875/AUSMT.V5I4.927","DOIUrl":"https://doi.org/10.5875/AUSMT.V5I4.927","url":null,"abstract":"This study seeks to optimize the grip shape of canes used as walking aids. We developed a prototype shaped to reduce the dorsiflexion of the wrist joint, which we believe is a cause of wrist pain. The stability of the prototype grip is evaluated using a floor reaction force gauge based on a Nintendo Wii Balance Board [RVL-021]. The grips of conventional (S grip) and the prototype (P grip) cane were compared to find a significant difference in the behavior of anterior-posterior movement. These results indicate that the prototype showed good weight shift, and that the proposed grip design improved the stability of weight transfer during walking.","PeriodicalId":38109,"journal":{"name":"International Journal of Automation and Smart Technology","volume":"5 1","pages":"203-207"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71161242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Finite Element Analysis and Empirical Analysis of a Cost-effective Pressure Ulcer-Preventing Mattress 一种高性价比压力防溃疡床垫的有限元分析与实证分析
International Journal of Automation and Smart Technology Pub Date : 2015-12-01 DOI: 10.5875/AUSMT.V5I4.915
Y. Lai, Lan-Yuen Guo
{"title":"Finite Element Analysis and Empirical Analysis of a Cost-effective Pressure Ulcer-Preventing Mattress","authors":"Y. Lai, Lan-Yuen Guo","doi":"10.5875/AUSMT.V5I4.915","DOIUrl":"https://doi.org/10.5875/AUSMT.V5I4.915","url":null,"abstract":"Pressure relief mattresses are recommended to prevent pressure ulcers (PU). Passive mattresses offer a cost advantage over dynamic mattresses. This study evaluates a new passive PU-preventing mattress. Finite element analysis was used to determine the curved surface design of a mushroom-shaped support. A novel mattress evaluation platform was developed integrating a pressure mapping sensor, laser doppler flowmetry (LDF) and precise temperature sensors to validate the effectiveness of the new passive mattress. Compared with standard hospital mattresses, the new passive mattress was found to provide a more even body pressure distribution (relative disparity of -0.7%) and better assisted subcutaneous blood flow (relative disparity of 18.78%). Experimental results demonstrated that the new passive mattress can provide an effective and economical solution for preventing PU.","PeriodicalId":38109,"journal":{"name":"International Journal of Automation and Smart Technology","volume":"5 1","pages":"209-215"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71161167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Analysis of GHG Emissions from Taiwan’s Industrial Sector 台湾工业部门温室气体排放之分析
International Journal of Automation and Smart Technology Pub Date : 2015-12-01 DOI: 10.5875/AUSMT.V5I4.1060
Sheng-Hsiung Chiu
{"title":"An Analysis of GHG Emissions from Taiwan’s Industrial Sector","authors":"Sheng-Hsiung Chiu","doi":"10.5875/AUSMT.V5I4.1060","DOIUrl":"https://doi.org/10.5875/AUSMT.V5I4.1060","url":null,"abstract":"To comprehensively elucidate the intelligent automation (IA) demands of Taiwanese companies in Southern China, the researchers administered a structured questionnaire to Taiwanese companies invested in Dongguan region, which was one of the earliest regions to undergo economic reform. A total of 30 valid questionnaires were recovered. Research findings showed that most responders are medium- and large-sized enterprises with production plants in Mainland China. The research also revealed that the higher levels of IA are in the processing, assembly, securing (e.g., tightening screws/fixtures), and quality assurance processes under the category “Manufacturing”, and the hardware connection (connecting computer and equipment) and software integration (i.e., MIS, MES, and ERP, among others) processes under “System Integration”. The majority of these processes possess corresponding mature solutions. The core issues are maintaining production flexibility and reducing payback periods.","PeriodicalId":38109,"journal":{"name":"International Journal of Automation and Smart Technology","volume":"5 1","pages":"197-201"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71161377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Analysis of Personal Life Patterns Using Accelerometer-Based Wearable Devices 基于加速度计的可穿戴设备的个人生活模式分析
International Journal of Automation and Smart Technology Pub Date : 2015-12-01 DOI: 10.5875/AUSMT.V5I4.960
Yeh-Liang Hsu, Yi-Fan Jiang, Ching-Hung Lin, Tsai-Ya Lai, Cheng-Li Chang
{"title":"Analysis of Personal Life Patterns Using Accelerometer-Based Wearable Devices","authors":"Yeh-Liang Hsu, Yi-Fan Jiang, Ching-Hung Lin, Tsai-Ya Lai, Cheng-Li Chang","doi":"10.5875/AUSMT.V5I4.960","DOIUrl":"https://doi.org/10.5875/AUSMT.V5I4.960","url":null,"abstract":"Many commercially available wearable devices are equipped with sensors to measure motion and physiological signals from the wearer. G-sensors are commonly used in such wearable devices for counting steps, estimating energy expenditure and detecting sleep duration. In this study, two features derived from G-sensor motion signals, average cadence (step count divided by time) and ratio of high G value (outside the range of 0.5g~1.5g), were used to classify physical activities into four intensity levels (sedentary, light, moderate, hard). Eighty physical activity samples were collected and trained by the Weka machine learning software to form a classification model. G-sensor motion signals from four participants were collected over two weeks and classified into four activity intensity levels using the model. Physical activity levels (PAL) and personal life patterns of the participants were then derived. This data can then be used to tailor additional services for individual users of wearable devices. A BLE (Bluetooth Low Energy) based system for older adults with dementia, combining personal life pattern analysis with localization function, is also proposed as an example application.","PeriodicalId":38109,"journal":{"name":"International Journal of Automation and Smart Technology","volume":"5 1","pages":"243-248"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71161503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Frequency Domain Effect of a Hysteresis Suppression System with Inverse Preisach Model Based Control 基于逆预紧模型控制的迟滞抑制系统的频域效应
International Journal of Automation and Smart Technology Pub Date : 2015-12-01 DOI: 10.5875/AUSMT.V5I4.847
Hsin-Fang Tsai, J. Yen, Lien-Sheng Chen, Hung-Cheng Chang, Jack J. H. Chen, Fu-Chen Wang, Wen-Bin Wung
{"title":"Frequency Domain Effect of a Hysteresis Suppression System with Inverse Preisach Model Based Control","authors":"Hsin-Fang Tsai, J. Yen, Lien-Sheng Chen, Hung-Cheng Chang, Jack J. H. Chen, Fu-Chen Wang, Wen-Bin Wung","doi":"10.5875/AUSMT.V5I4.847","DOIUrl":"https://doi.org/10.5875/AUSMT.V5I4.847","url":null,"abstract":"The extended Preisach model is used extensively in precision control for its ability to model and thus can be used to suppress the hysteresis phenomenon. Although an inverse model based on the classical Preisach model entails a very high level of computational complexity, recent advances in computer technology has enabled real-time implementation of such models. The extended Preisach model calculates the hysteresis action by fitting the - table in the Preisach model to a surface. One can then calculate the amount of extension and retraction simply by searching for the parameters on the surface. This paper proposes a real-time high speed implementation of a model-based hysteresis elimination control. The experimental results show that the proposed method produces a smaller tracking error with a smooth system output.","PeriodicalId":38109,"journal":{"name":"International Journal of Automation and Smart Technology","volume":"5 1","pages":"265-273"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71161068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Smart Home Strategies for User-Centered Functional Assessment of Older Adults 以用户为中心的老年人功能评估智能家居策略
International Journal of Automation and Smart Technology Pub Date : 2015-12-01 DOI: 10.5875/AUSMT.V5I4.952
Vijay Ravishankar, W. Burleson, D. Mahoney
{"title":"Smart Home Strategies for User-Centered Functional Assessment of Older Adults","authors":"Vijay Ravishankar, W. Burleson, D. Mahoney","doi":"10.5875/AUSMT.V5I4.952","DOIUrl":"https://doi.org/10.5875/AUSMT.V5I4.952","url":null,"abstract":"Successful aging, independence and capacity for aging in place involves the maintenance and preservation of individuals’ physical, mental and social well-being. Elderly people need to maintain the capacity to perform both activities of daily living (ADL) and instrumental activities of daily living (IADL). Advances in Smart Home technologies are increasingly able to provide embedded assessments of an individual’s functional ability in his/her home on a moment-to-moment, daily, and longitudinal basis. To date, in-situ functional assessment systems and research have focused to a greater extent on the advancement of technologies rather than the multi-faceted needs and experiences of users, however the success of any technology depends more on the users than the technology itself. This paper presents strategies for user-centric approaches to identify the technical and design challenges of developing, deploying, and using functional assessment systems in homes occupied by senior citizens. Case studies involved 4 healthy older adults (aged 65+), and examined the home deployment of smart home systems and interfaces aimed at assessment of a combination of ADL and IADL activities. Pre- and post-activity interviews were used to better understand issues related to desire, privacy, technological acceptance, suitability, and need fulfillment/support. The results inform strategies for user-centered functional assessment and assistive technology design and implementation, providing information capture, analysis, and delivery of in-home functional assessment that has the potential to support aging in place.","PeriodicalId":38109,"journal":{"name":"International Journal of Automation and Smart Technology","volume":"5 1","pages":"233-242"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71161491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 16
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