Artificial Life and Robotics

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Invariant manifold-based stabilizing controllers for nonholonomic mobile robots
Artificial Life and Robotics - Tập 20 - Trang 276-284 - 2015
Yin Yin Aye, Keigo Watanabe, Shoichi Maeyama, Isaku Nagai
The problem of designing a stabilizing controller for point-to-point control of a four-wheeled mobile robot is considered in this study. The stability of the proposed control system is analyzed using Lyapunov theory. Firstly, a four-wheeled mobile robot which is an under-actuated system with two inputs is considered as a controlled object. Then, the switching and non-switching control methods base...... hiện toàn bộ
Improving controller performance for modeling two-person artificial wrestling by underestimating basins of attraction
Artificial Life and Robotics - Tập 25 - Trang 38-47 - 2019
Katsutoshi Yoshida, Yoshikazu Yamanaka
This study proposes a preprocessing method that overcomes the misprediction problems in the intelligent motion controllers (IMCs) of two-person wrestling models. In our previous study, the competitive problems were solved on a coupled inverted pendula model, in which an intelligent controller produced the desired final states by exerting impulsive forces on each pendulum. The final states were inf...... hiện toàn bộ
Automatic detection and visualization system for coronary artery calcification using optical frequency domain imaging
Artificial Life and Robotics - Tập 28 - Trang 460-470 - 2023
Ryo Oikawa, Akio Doi, Masaru Ishida, Basabi Chakraborty
Percutaneous coronary intervention (PCI) is mainly used in the treatment of stenosis of the coronary arteries of the heart characteristic of coronary artery disease, and it is important that the level of calcification is evaluated in advance of this procedure. A physician typically examines cross-sectional OFDI images of the coronary artery and decides whether PCI is applicable. However, it takes...... hiện toàn bộ
On-line tuning PID parameters in an idling engine based on a modified BP neural network by particle swarm optimization
Artificial Life and Robotics - Tập 14 - Trang 129-133 - 2009
Jia-Meng Yin, Ji-Sun Shin, Hee-Hyol Lee
PID control systems are widely used in many fields, and many methods to tune the parameters of PID controllers are known. When the characteristics of the object are changed, the traditional PID control should be adjusted by empirical knowledge. This may result in a worse performance by the system. In this article, a new method to tune PID parameters, called the back-propagation network modified by...... hiện toàn bộ
Occupancy grid map of semi-static objects by mobile observer
Artificial Life and Robotics - Tập 20 - Trang 7-12 - 2014
Viet Chau Dang, Masao Kubo, Hiroshi Sato, Tomohiro Shirakawa, Akira Namatame
In this research we propose a method for spatial representation of semi-static objects in dynamic environment. For this objective, we extend IMAC (Independent Markov Chain Occupancy) model, which is a map constructing method for dynamic environment. In the IMAC model, a mobile observer cannot estimate the grid map correctly if it does not stop enough time at the same location. To overcome this lim...... hiện toàn bộ
The velocity updating rule according to an oblique coordinate system with mutation and dynamic scaling for particle swarm optimization
Artificial Life and Robotics - Tập 23 - Trang 618-627 - 2018
Tetsuyuki Takahama, Setsuko Sakai
Particle swarm optimization (PSO) has been showing powerful search performance especially in separable and unimodal problems. However, the performance is deteriorated in non-separable problems such as rotated problems. In this study, a new velocity updating rule according to an oblique coordinate system, instead of an orthogonal coordinate system, is proposed to solve non-separable problems. Two m...... hiện toàn bộ
Một tiếp cận đối với lý thuyết thiết kế phát sinh và các ứng dụng Dịch bởi AI
Artificial Life and Robotics - Tập 3 - Trang 86-89 - 1999
S. Kitamura, Y. Kakuda, H. Tamaki
Một phương pháp mới nổi để thiết kế các vật phẩm (hệ thống nhân tạo) được đề xuất. Đầu tiên, quy trình thiết kế hệ thống được định hình lại trong khuôn khổ lý thuyết tập hợp và ánh xạ, và vấn đề thiết kế được xác định là một ánh xạ ngược từ tập hợp các thông số phụ thuộc vào môi trường đến tập hợp các thành phần và các kết nối của chúng. Vấn đề ngược này có thể được giải quyết bằng cách lặp lại án...... hiện toàn bộ
#thiết kế phát sinh #hệ thống nhân tạo #ánh xạ ngược #tiến hóa #thích ứng #học tập #robot di chuyển đa liên kết
A study on state recognition in wide area by aerial image analysis
Artificial Life and Robotics - - 2013
Ganwen Jiang, Masayuki Kashima, Kiminori Sato, Mutsumi Watanabe
Correlation and hierarchies in financial markets
Artificial Life and Robotics - Tập 17 - Trang 136-139 - 2012
Zeyu Zheng, Naoko Sakurai, Takeshi Fujiwara, Kousuke Yoshizawa, Kazuko Yamasaki
As an emerging financial market, the trading value of carbon emission trading market has definitely increased in recent years. The carbon emission is not only trading in carbon emitters but also has become an important investment target. To determine the mechanism of this growing market, we analyzed the EU allowances (EUA) price series in European Climate Exchange (ECX) that is the leading Europea...... hiện toàn bộ
Robust ride comfort control of vehicles without measurements of tire deflection
Artificial Life and Robotics - Tập 15 Số 2 - Trang 133-137 - 2010
Katsuhiro Okumura, Masahiro Oya, Hideki Wada
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