Zobrazeno 1 - 10
of 250
pro vyhledávání: '"Masafumi Okada"'
Autor:
Masafumi OKADA, Kazuki WATANABE
Publikováno v:
Mechanical Engineering Journal, Vol 11, Iss 3, Pp 24-00120-24-00120 (2024)
A model-based controller is effective for highly accurate and fast control of a robot. The dynamics model is derived from its equations of motion, and the minimum set of the dynamics parameters are experimentally identified. However, the experimental
Externí odkaz:
https://doaj.org/article/391abb77dcb64410856f00e228cd067d
Autor:
Aya Narita, Yuta Koto, Shinichi Noto, Masafumi Okada, Midori Ono, Terumi Baba, Rieko Sagara, Norio Sakai
Publikováno v:
Orphanet Journal of Rare Diseases, Vol 19, Iss 1, Pp 1-14 (2024)
Abstract Background Patients with Gaucher disease (GD), a rare lysosomal storage disorder, have reduced health-related quality of life (HRQOL). A patient-reported outcome measure (PROM) for HRQOL developed for type 1 GD (GD1) is not appropriate for p
Externí odkaz:
https://doaj.org/article/1e2c63546a6f469899ca8106752ca577
Autor:
Yutaka OKAMOTO, Masafumi OKADA
Publikováno v:
Mechanical Engineering Journal, Vol 10, Iss 6, Pp 23-00200-23-00200 (2023)
In excavation by hydraulic excavators, automation of excavation is effective in reducing the burden on operators and improving work efficiency. This paper focuses on automatic control of the weight of excavated soil. To control the weight of excavate
Externí odkaz:
https://doaj.org/article/1c2743dec7e1455b905ac59f4130567e
Autor:
Masafumi OKADA, Kohei IWANO
Publikováno v:
Mechanical Engineering Journal, Vol 10, Iss 6, Pp 23-00322-23-00322 (2023)
Conventional remote operation of excavators is less efficient than direct operation. To address this, we have developed a semi-autonomous control system that combines autonomy (a dynamical system with an attractor) and human action (admittance contro
Externí odkaz:
https://doaj.org/article/50d87ac377a445b38daaa115fbf4b6d7
Autor:
Yuta Koto, Aya Narita, Shinichi Noto, Masafumi Okada, Midori Ono, Terumi Baba, Rieko Sagara, Norio Sakai
Publikováno v:
Molecular Genetics and Metabolism Reports, Vol 36, Iss , Pp 100994- (2023)
Background: Gaucher disease (GD), a rare lysosomal storage disorder, is associated with considerable patient and caregiver burden. We examined the applicability of existing caregiver questionnaires and assessed the level of burden in caregivers of pa
Externí odkaz:
https://doaj.org/article/63ae56dbca7d466f9bb2e3366d7266cd
Autor:
Masafumi OKADA, Hiroaki KUROSU
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 89, Iss 920, Pp 22-00291-22-00291 (2023)
When a mechanical system collides with the ground, the impact force may cause damage to its components. Generally, springs and elastic members are installed to prevent the impact. However, it is difficult to overcome this problem because hard springs
Externí odkaz:
https://doaj.org/article/9181fe673d4946aeb44bae91cc879cf4
Autor:
Takeshi KOIKE, Masafumi OKADA
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 89, Iss 919, Pp 22-00310-22-00310 (2023)
For industrial welding robots using the teaching-playback method, repeatability is more important than absolute accuracy. However, when a robot is replaced due to failure or other reasons, the tip position is shifted because the error factors related
Externí odkaz:
https://doaj.org/article/f4b427c769eb414c98666ba1d057d11f
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 88, Iss 914, Pp 22-00100-22-00100 (2022)
Accurate identification of minimum set of dynamics parameters is required for high-precision and high-speed motion control. The identification uses the dynamical model and its motion data. This motion data does not always satisfy the equations in the
Externí odkaz:
https://doaj.org/article/bc09827959f04ac899e1f9857f7dff58
Autor:
Masafumi OKADA, Takeshi KOIKE
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 88, Iss 913, Pp 22-00088-22-00088 (2022)
The arc welding robot uses a weaving motion that periodically oscillates the welding torch installed at the tip of the robot. The weaving motion is used for the arc sensor to follow the weld fusion line, and the error of the oscillation has large eff
Externí odkaz:
https://doaj.org/article/f52be4cdce1f4eeeb3db5ecc51a0d98f
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 88, Iss 912, Pp 22-00012-22-00012 (2022)
In this paper, we propose a control system design method for a human-machine cooperative system in which a human and machine cooperate to propel a cart to a reference trajectory. In the previously proposed method, the human plays the role of recogniz
Externí odkaz:
https://doaj.org/article/e303df35517847228960c888f0485d5b