Hanlin Niu, Ze Ji, F. Arvin, B. Lennox, Hujun Yin, J. Carrasco
{"title":"Accelerated Sim-to-Real Deep Reinforcement Learning: Learning Collision Avoidance from Human Player","authors":"Hanlin Niu, Ze Ji, F. Arvin, B. Lennox, Hujun Yin, J. Carrasco","doi":"10.1109/IEEECONF49454.2021.9382693","DOIUrl":"https://doi.org/10.1109/IEEECONF49454.2021.9382693","url":null,"abstract":"This paper presents a sensor-level mapless collision avoidance algorithm for use in mobile robots that map raw sensor data to linear and angular velocities and navigate in an unknown environment without a map. An efficient training strategy is proposed to allow a robot to learn from both human experience data and self-exploratory data. A game format simulation framework is designed to allow the human player to tele-operate the mobile robot to a goal and human action is also scored using the reward function. Both human player data and self-playing data are sampled using prioritized experience replay algorithm. The proposed algorithm and training strategy have been evaluated in two different experimental configurations: Environment 1, a simulated cluttered environment, and Environment 2, a simulated corridor environment, to investigate the performance. It was demonstrated that the proposed method achieved the same level of reward using only 16% of the training steps required by the standard Deep Deterministic Policy Gradient (DDPG) method in Environment 1 and 20% of that in Environment 2. In the evaluation of 20 random missions, the proposed method achieved no collision in less than 2 h and 2.5 h of training time in the two Gazebo environments respectively. The method also generated smoother trajectories than DDPG. The proposed method has also been implemented on a real robot in the real-world environment for performance evaluation. We can confirm that the trained model with the simulation software can be directly applied into the real-world scenario without further fine-tuning, further demonstrating its higher robustness than DDPG. The video and code are available: https://youtu.be/BmwxevgsdGc https://github.com/hanlinniu/turtlebot3_ddpg_collision_avoidance","PeriodicalId":395378,"journal":{"name":"2021 IEEE/SICE International Symposium on System Integration (SII)","volume":"436 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116553579","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":"Generating Curved Path Walking Gaits for Biped Robots with Deficient Degrees of Freedom","authors":"K. Venkatesan, Prajwal Rajendra Mahendrakar","doi":"10.1109/IEEECONF49454.2021.9382698","DOIUrl":"https://doi.org/10.1109/IEEECONF49454.2021.9382698","url":null,"abstract":"This paper presents a method for generating curved path sequences in a humanoid robot with a deficient degree of freedom (DOF).Typically robots not having the yaw DOF in their limbs cannot turn in a curved path. This paper aims at achieving that by combining the robot’s friction based slip turn mechanism with the simple straight walking gait of the 3-D linear inverted pendulum model into a smooth curved motion. The amount of turn caused by the slip model is estimated and multiple experiments are conducted to verify the prediction. We noticed that the co-efficient of friction does not affect the amount of turn for symmetric gaits. A novel mathematical model which uses the radius of the curved path to plan the gait for generating a smooth circular trajectory, has been developed. A 17-DOF robot named TONY is used to test the hypothesis. The results are successful and the robot is able to walk in a curved path.","PeriodicalId":395378,"journal":{"name":"2021 IEEE/SICE International Symposium on System Integration (SII)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122248587","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}
H. Yoshida, Kohei Shimasaki, T. Senoo, I. Ishii, Kazuhiko Yamamoto
{"title":"A long-time automated honeybees count system using high-speed vision","authors":"H. Yoshida, Kohei Shimasaki, T. Senoo, I. Ishii, Kazuhiko Yamamoto","doi":"10.1109/IEEECONF49454.2021.9382778","DOIUrl":"https://doi.org/10.1109/IEEECONF49454.2021.9382778","url":null,"abstract":"Honeybees play a significant role in increasing the effectiveness of agricultural practices. However, their numbers have witnessed a concerning decline in recent years owing to several reasons represented by the colony collapse disorder. Thus, honeybee monitoring has recently attracted increased research attention. The method presented in this paper facilitates counting of honeybees flying in their natural environment by capturing high-frame-rate (HFR) images. The proposed method inspects periodic changes in the image brightness caused by the honeybees’ wing flapping at frequencies of the order of hundreds of hertz. Vibration-source localization based on the short-time Fourier transform of all pixels facilitates the detection of bees even when their individual appearances remain unclear. The proposed system is resistant to sunshine changes by equalizing the brightness histogram of captured images. It can reliably determine the number of honeybees flying near their hive per day by performing a counting experiment that might last several hours, such as eight or more.","PeriodicalId":395378,"journal":{"name":"2021 IEEE/SICE International Symposium on System Integration (SII)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128110142","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":"The Effect of Passive Lower Limb Assist Device on Muscle Synergy in Standing-Up Motion","authors":"S. Torigai, Takayuki Tanaka","doi":"10.1109/IEEECONF49454.2021.9382626","DOIUrl":"https://doi.org/10.1109/IEEECONF49454.2021.9382626","url":null,"abstract":"We aim to develop an assist system that corrects changes in muscle synergy during human body movements. In this paper, we investigate the effect of a passive lower-limb assist device with four different spring arrangement patterns on human muscle synergy during standing motion. The results indicate was possible to change muscle synergies, which are dominant in the standing motion, without changing their composition.","PeriodicalId":395378,"journal":{"name":"2021 IEEE/SICE International Symposium on System Integration (SII)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128456143","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}
Hayato Yase, D. Sasaki, Jun Kadowaki, Taiga Kimura
{"title":"Consideration about Structure of Gait Motion Assist Device for Trunk Using McKibben Type Pneumatic Artificial Muscle","authors":"Hayato Yase, D. Sasaki, Jun Kadowaki, Taiga Kimura","doi":"10.1109/IEEECONF49454.2021.9382615","DOIUrl":"https://doi.org/10.1109/IEEECONF49454.2021.9382615","url":null,"abstract":"Stability and efficiency of walking can be obtained according to trunk motions such as side flexion and rotation. In this study, spine type wearable device which can correct a posture and assist these trunk motions was developed to support exercise therapy for people declined in ability of walking. Proposed device has advantage of high affinity with human body owing to adjustable stiffness mechanism. In this paper, the mechanism of device, design method of artificial muscle based on rubber property and assisting method are described. The mechanism of device imitates spine structure to realize adjustable stiffness characteristics. We applied an artificial muscle model to simplify of mechanism and control method. Finally, the effectiveness of proposed mechanism and assisting method was confirmed from experiment result.","PeriodicalId":395378,"journal":{"name":"2021 IEEE/SICE International Symposium on System Integration (SII)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131848716","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":"Improved Scan Matching Performance in Snowy Environments Using Semantic Segmentation","authors":"M. Obuchi, T. Emaru, Ankit A. Ravankar","doi":"10.1109/IEEECONF49454.2021.9382713","DOIUrl":"https://doi.org/10.1109/IEEECONF49454.2021.9382713","url":null,"abstract":"Inclement weather conditions such as snowy environments poses a lot of challenge for autonomous driving. Because of the dynamic changes in the environment, there will be difference between the prior map obtained from a LiDAR system and current sensor data. To overcome this problem, in this study, we present a semantic segmentation based method to recognize the snow cover from the camera images and project the results on the LiDAR point cloud to distinguish the differences. Our results shows improved localization accuracy in snow environment.","PeriodicalId":395378,"journal":{"name":"2021 IEEE/SICE International Symposium on System Integration (SII)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131919011","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":"Basic Evaluation of Carbonate Stimulus Amplification and Taste Change Using AC Electric Stimulation","authors":"Jumpei Kanayama, Ibuki Nomura, Noriki Mochizuki, Takafumi Koike, Sousuke Nakamura","doi":"10.1109/IEEECONF49454.2021.9382782","DOIUrl":"https://doi.org/10.1109/IEEECONF49454.2021.9382782","url":null,"abstract":"In this paper, the effects of changing the current, frequency, and duty ratio of the electric stimulus on the amplification and taste change of a carbonated water by using electric taste are evaluated. As a result, some trends were found for the current and frequency, but no trend was found for the duty ratio.","PeriodicalId":395378,"journal":{"name":"2021 IEEE/SICE International Symposium on System Integration (SII)","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134339486","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}
U. Mavinkurve, Seyed Amir Tafrishi, Ayato Kanada, Motoji Yamamoto
{"title":"An Energy Based Control for Vibration Suppression in a Rigid Parallel Series Elastic Actuator","authors":"U. Mavinkurve, Seyed Amir Tafrishi, Ayato Kanada, Motoji Yamamoto","doi":"10.1109/IEEECONF49454.2021.9382723","DOIUrl":"https://doi.org/10.1109/IEEECONF49454.2021.9382723","url":null,"abstract":"Elastic actuators find a growing interest in many research areas ranging from rehabilitation robotics to industrial robotics. Elastic actuators are actuators with elements of compliance, such as springs connected in different configurations between the actuator and the load. In particular, Rigid Parallel Series Elastic Actuators (RPSEA) is an emerging design that, in addition to the advantages provided by parallel elastic actuators, provides the ability to actively control the storage and release of spring energy. Owing to the spring element in these actuators, they often face the problem of oscillations. In this study, we propose an energy-based control strategy for vibration suppression by using only one motor of the RPSEA. The analytical findings are substantiated with simulations of the mechanism subjected to an impulse disturbance.","PeriodicalId":395378,"journal":{"name":"2021 IEEE/SICE International Symposium on System Integration (SII)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134410561","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":"Behavioral Cloning from Observation with Bi-directional Dynamics Model","authors":"Tobias Betz, Hidehito Fujiishi, Taisuke Kobayashi","doi":"10.1109/IEEECONF49454.2021.9382751","DOIUrl":"https://doi.org/10.1109/IEEECONF49454.2021.9382751","url":null,"abstract":"Robotics is rapidly expanding its workplace from industrial factories to more complicated fields to work on behalf of human. The difficulty of programing the operations human does in advance, however, prevents this expansion. Behavioral cloning is one of the promising approaches to acquire the operations effectively from the expert’s demonstrations, which consist of the states and the performed actions of the expert. However, it is intractable and/or highly expensive for robots to measure the expert’s actions. Behavioral cloning from observation fills this gap and makes it possible to imitate with state-only demonstrations by inferring actions that the expert performed from an inverse dynamics model. Our goal is to improve the accuracy of this algorithm. This is done by evaluating the inferred action using an additional forward dynamics model. Specifically, we focus on the consistency in both dynamics models, which have to be bi-directional. This bi-directionality, can classify whether the inferred action is realistic or not, and can prevent wrong updates. We show the successful improvement with our new method using various simulation tasks which are typically used in benchmarks.","PeriodicalId":395378,"journal":{"name":"2021 IEEE/SICE International Symposium on System Integration (SII)","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131625341","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":"Development of high-speed gripper with closing and releasing capability","authors":"Ryosuke Iwazawa, K. Ohara, M. Kaneko","doi":"10.1109/IEEECONF49454.2021.9382704","DOIUrl":"https://doi.org/10.1109/IEEECONF49454.2021.9382704","url":null,"abstract":"There are many recent studies on hyper-human technology like high speed grasping. An existing systems uses the release energy of a spring for high-speed grasping with an arm action with 100G. However, this gripper did not have the ability to release the object. To improve the feasibility of the system for real applications, both grasping and releasing functions are required. In this paper, we propose a prototype high-speed gripper which has the ability to both grasp and release. The conventional system used a spring to achieve high speed gripping. The grasping force decreases as the distance up to the object increases. In contrast, the gripper proposed here uses an air cylinder to open and close the gripper, so that the grasping force does not decrease as the distance increases. Preliminary experiments are conducted and the effectiveness of the proposed mechanism is evaluated.","PeriodicalId":395378,"journal":{"name":"2021 IEEE/SICE International Symposium on System Integration (SII)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132408839","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}