I. M. Sofi, T. Dinh, Araan Mohanadass, J. Jeffs, Q. T. Trương, Ngoc Minh Truong Bui
{"title":"Advanced Simulation Tool to Develop Efficient Thermal Management Systems for Electric Vehicles","authors":"I. M. Sofi, T. Dinh, Araan Mohanadass, J. Jeffs, Q. T. Trương, Ngoc Minh Truong Bui","doi":"10.1109/ICMT53429.2021.9687213","DOIUrl":"https://doi.org/10.1109/ICMT53429.2021.9687213","url":null,"abstract":"The worldwide concerns on air pollution and oil depletion in resources have pushed more automotive industry attention toward electric vehicles (EVs) as a long-term solution. However, the driving range of EV s are still less than the traditional combustion engine vehicles. Development of an efficient thermal management system for EV s is of significant importance to improve the overall vehicle performance whilst prolonging the driving range. To accelerate this development target, this paper introduces an advanced simulation tool based on an internet-distributed hardware-in-the-loop simulation (ID-HILS) concept. The ID-HILS platform therefore offer a high flexibility in configuring the simulation which combines both virtual and/or physical vehicle sub-systems distributed at different environment and/or locations. This helps to reduce the efforts and costs to build an entire vehicle simulation tool for the generation of thermal management systems.","PeriodicalId":258783,"journal":{"name":"2021 24th International Conference on Mechatronics Technology (ICMT)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130097537","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}
A. Senatore, Alex De Simone, Martina Travaglino, Mario Pisaturo, Veronica D'Urso
{"title":"Modeling of Onshore Wave Energy Converter: Inverse Dynamic Analysis and Thermal Prediction","authors":"A. Senatore, Alex De Simone, Martina Travaglino, Mario Pisaturo, Veronica D'Urso","doi":"10.1109/ICMT53429.2021.9687282","DOIUrl":"https://doi.org/10.1109/ICMT53429.2021.9687282","url":null,"abstract":"Sea wave energy is being increasingly regarded as one of the most promising sources of renewable energy. This paper deals with the modeling and simulation of an onshore Wave Energy Converter system designed by UMBRA GROUP SpA, world leader in the production of high-precision ball screws for aerospace, industrial and energy sectors. Several topics are addressed: starting from the multibody modeling strategy, this paper goes more deeply into the characterization of the most interesting forces acting on the structure, as well as the thermal behavior investigation of the power take-off module based on lumped-parameter and Finite Element Method models. Inverse Multibody Dynamic Analysis is performed and simulation results are collected to prove the effectiveness of the proposed approach. The indirect efficiency of the mechanism has been found quite high (80-85%) in comparison with other wave energy converter mechanisms, whereas the thermal level does not exceed 165°C (electric machine), 140°C (screw), 47°C (nut).","PeriodicalId":258783,"journal":{"name":"2021 24th International Conference on Mechatronics Technology (ICMT)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134107065","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}
{"title":"Research on a New Independent Metering System for Boom Excavator","authors":"T. Nguyen, T. Do, K. Ahn","doi":"10.1109/ICMT53429.2021.9687258","DOIUrl":"https://doi.org/10.1109/ICMT53429.2021.9687258","url":null,"abstract":"In this paper, a new design of independent metering valve system is proposed for saving energy in boom excavator. The proposed system uses three Electro-Hydraulic Poppet valve (EHPV) and one directional control valve which reduce one EHPV compared to conventional independent metering valve (CIMV). Besides, an energy management strategy is designed to operate the system. To verify the effectiveness of the proposed system, some simulations are carried out based on an AMESim/Matlab co-simulation model. The results demonstrate that the energy saving achieve up to 25%. Consequently, the proposed system can not only reduce the installation cost but also improve fuel economy.","PeriodicalId":258783,"journal":{"name":"2021 24th International Conference on Mechatronics Technology (ICMT)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131412852","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}
{"title":"A Smart Grasping System for Handling Irregular, Naturally Varying Objects","authors":"Zhicong Deng, L. Holibar, E. Wester","doi":"10.1109/ICMT53429.2021.9687240","DOIUrl":"https://doi.org/10.1109/ICMT53429.2021.9687240","url":null,"abstract":"This paper presents the design, integration, and validation of a smart grasping system for handling irregular, naturally varying objects. The system consists of a 6-axis robot, a soft robotic gripper, a vision sensor and a computer. A grasping algorithm utilizing reinforcement learning is imple-mented to provide the flexibility and adaptiveness required to handle object variations. Benchmark testing were conducted on simple objects and the system achieved a 68 % grasp success rate after 1500 training iterations. Improvements to the system were then implemented including the repositioning of the vision sensor, a reset mechanism and a collision avoidance algorithm. A grasp success rate of 80% was achieved with the improved system. Kumara (sweet potato) was selected in this case as an example of irregular, naturally varying objects. Initial training and testing with kumara proved to be challenging and a pre-training approach with annotated images were proposed and implemented. Human grasping experience was incorporated into the grasping system via the pre-training and a 71 % grasp success rate was achieved after 1500 iterations.","PeriodicalId":258783,"journal":{"name":"2021 24th International Conference on Mechatronics Technology (ICMT)","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130287467","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}
{"title":"Adaptive Optimal Control for Upper Exoskeleton following Saturation Function","authors":"D. Phu, Bien Minh Tri","doi":"10.1109/ICMT53429.2021.9687228","DOIUrl":"https://doi.org/10.1109/ICMT53429.2021.9687228","url":null,"abstract":"In this study, a new optimal control based on saturation function for the upper exoskeleton is presented. The saturation model is an advanced model including signum function property, which is symbolized by the sliding mode model. Input control of the system is then designed following the saturation model. The gain of the input control is obtained following adaptation law related to the dynamic parameter of the system. After formulating, the control is simulated for evaluation. The random movement of the upper exoskeleton is applied in the simulation, and the tracking performance is used for the proposed controller. The simulation results show that the proposed control is good performance and can be applied in the real system.","PeriodicalId":258783,"journal":{"name":"2021 24th International Conference on Mechatronics Technology (ICMT)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124283872","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}
{"title":"RNN Based Knee Joint Muscular Torque Estimation of a Knee Exoskeleton for Stair Climbing","authors":"Chun-Yi Kuo, Dun-Yan Wu, Chi-Ying Lin","doi":"10.1109/ICMT53429.2021.9687219","DOIUrl":"https://doi.org/10.1109/ICMT53429.2021.9687219","url":null,"abstract":"This study presents the use of a recurrent neural network to estimate knee joint muscular torques for the development of assistive control strategies of a knee exoskeleton in stair climbing applications. To identify the correct timing of giving assistive torques during the stair climbing process, integrating with a lower limb dynamic model with the foot-force measured data is a common way to derive the knee joint torque profile for gait analysis. However, this estimation method which requires the installation of pressure sensors on the sole of the feet has drawbacks including the inconvenience of exoskeleton wearing and increased moving difficulty. The fact that stair climbing is a sequential movement thus allows us to apply a recurrent neural network to obtain the relationship between the knee joint muscular torque and lower limb gait. Stair climbing experiments on a knee exoskeleton wearer reveal that the trained neural network is able to perform the desired knee joint torque estimation whose results can be applied to derive proper assistive torques in the presence of human-robot interaction.","PeriodicalId":258783,"journal":{"name":"2021 24th International Conference on Mechatronics Technology (ICMT)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129076457","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}