Mechanical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), No. 424, Hafez Avenue, Tehran, 15875-4413, Iran e-mail: s.sadeghnejad@aut.ac.ir"/> Biomedical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), No. 424, Hafez Avenue, Tehran, 15875-4413, Iran"/> Department of Electrical Engineering, National Taiwan Normal University, 162 Heping E Road Section 1, Taipei, 10610, Taiwan"/>
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2019 Volume 34
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RESEARCH ARTICLE   Open Access    

The average speed of motion and optimal power consumption in biped robots

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  • Abstract: One of the issues that have garnered little attention, but that is nevertheless important for developing practical robots, is optimal walking conditions like power consumption during walking. The main contribution of this research is to prepare a correct walking pattern for humans who have a problem with their walking and also study the effect of average motion speed on optimal power consumption. In this study, we firstly optimize the stability and minimize the power consumption of the robot during the single support phase using parameter optimization. Our approach is based on the well-known Zero Moment Point method to calculate the stability of the proposed biped robot. Secondly, we performed experiments on healthy male, age 29 years, to analyze human walking by placing 28 markers, attached to anatomical positions and two power plates for a distance of more than one gait cycle at an average speed of 1.23 ± 0.1 m s−1 validate our results for motion analysis of correct walking ability. Our model was continuously validated by comparing the results of our empirical evaluation against the prediction of our model. The errors between experimental test and our prediction were about 4%–11% for the joint trajectories and about 0.2%–0.5% for the ground reaction forces which is acceptable for our prediction. Due to the presented model and optimized issue and predicted path, the robot can move like a person in a way that has maximum stability along with the minimum power consumption. Finally, the robot was able to walk like a specific person that we considered. This study is a case study and also can be generalized to all samples and can perform these procedures to another person’s with different features.
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  • Cite this article

    Vida Shams Esfanabadi, Mostafa Rostami, Seyed Mohammadali Rahmati, Jacky Baltes, Soroush Sadeghnejad. 2019. The average speed of motion and optimal power consumption in biped robots. The Knowledge Engineering Review 34(1), doi: 10.1017/S0269888919000201
    Vida Shams Esfanabadi, Mostafa Rostami, Seyed Mohammadali Rahmati, Jacky Baltes, Soroush Sadeghnejad. 2019. The average speed of motion and optimal power consumption in biped robots. The Knowledge Engineering Review 34(1), doi: 10.1017/S0269888919000201

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RESEARCH ARTICLE   Open Access    

The average speed of motion and optimal power consumption in biped robots

Abstract: Abstract: One of the issues that have garnered little attention, but that is nevertheless important for developing practical robots, is optimal walking conditions like power consumption during walking. The main contribution of this research is to prepare a correct walking pattern for humans who have a problem with their walking and also study the effect of average motion speed on optimal power consumption. In this study, we firstly optimize the stability and minimize the power consumption of the robot during the single support phase using parameter optimization. Our approach is based on the well-known Zero Moment Point method to calculate the stability of the proposed biped robot. Secondly, we performed experiments on healthy male, age 29 years, to analyze human walking by placing 28 markers, attached to anatomical positions and two power plates for a distance of more than one gait cycle at an average speed of 1.23 ± 0.1 m s−1 validate our results for motion analysis of correct walking ability. Our model was continuously validated by comparing the results of our empirical evaluation against the prediction of our model. The errors between experimental test and our prediction were about 4%–11% for the joint trajectories and about 0.2%–0.5% for the ground reaction forces which is acceptable for our prediction. Due to the presented model and optimized issue and predicted path, the robot can move like a person in a way that has maximum stability along with the minimum power consumption. Finally, the robot was able to walk like a specific person that we considered. This study is a case study and also can be generalized to all samples and can perform these procedures to another person’s with different features.

    • This work was financially supported by the Chinese Language and Technology Center of National Taiwan Normal University (NTNU) from The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education (MOE) in Taiwan, and Ministry of Science and Technology, Taiwan, under Grants no. MOST108-2634-F-003-002, MOST108-2634-F-003-003 and MOST108-2634-F-003-004 (administered through Pervasive Artificial Intelligence Research (PAIR) Labs), as well as MOST107-2811-E-003-503. We are grateful to the National Center for High-performance computing for computer time and facilities to conduct this research.

    • The authors confirm that this manuscript and its corresponding research work involve no conflicts of interest.

    • © Cambridge University Press, 20192019Cambridge University Press
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    Cite this article
    Vida Shams Esfanabadi, Mostafa Rostami, Seyed Mohammadali Rahmati, Jacky Baltes, Soroush Sadeghnejad. 2019. The average speed of motion and optimal power consumption in biped robots. The Knowledge Engineering Review 34(1), doi: 10.1017/S0269888919000201
    Vida Shams Esfanabadi, Mostafa Rostami, Seyed Mohammadali Rahmati, Jacky Baltes, Soroush Sadeghnejad. 2019. The average speed of motion and optimal power consumption in biped robots. The Knowledge Engineering Review 34(1), doi: 10.1017/S0269888919000201
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