Journal of the Japanese Society for Experimental Mechanics 13(Special Issue 2013) pp. s102-s107 2013年8月 [査読有り]
In this study, we set a single arm robot and load mass on the center of experimental Quad Rotor Helicopter (QRH). When the robot arm tilts in small angle (~30 degrees), this motion generates load torque to tilt the airframe of QRH, and then attitu...
The International Journal of Intelligent Unmanned Systems 1(2) pp.187-198 2013年4月 [査読有り]
With the purpose of clearing up the risk to rotor blades, this paper develops a quad ducted-fan helicopter using four ducted-fans instead of four rotor blades in a quad rotor helicopter. Auto hoverring test, auto cruise test, and altitude control ...
S Kishibe   A Imamura   M Sato   
ELECTRONICS AND COMMUNICATIONS IN JAPAN PART III-FUNDAMENTAL ELECTRONIC SCIENCE 85(2) 43-51 2002年
As a lock tracking system for the spread spectrum communication scheme, the delay lock loop (DLL) has been widely used for a long time. However, when code division multiple access (CDMA) is carried out, signals from other stations in communication...
W Takaishi   T Kimura   A Imamura   M Sato   
ELECTRONICS AND COMMUNICATIONS IN JAPAN PART III-FUNDAMENTAL ELECTRONIC SCIENCE 80(9) 1-10 1997年9月
In this paper, we propose a new scheme of digital frequency modulation that jointly utilizes a Nyquist III filter and a Gaussian filter for a premodulation filter. In this scheme, the phase transition and the phase trajectory during the symbol int...
Akitaka Imamura   Osaka Sangyo Uni   Yasuyuki Urashiri   Japan   Remoto Control   Masafumi Miwa   Tokushima Univ   Junichi Hino   Tokushima Un   
The 10th International Conference on Intelligent Unmanned Systems 156 2014年9月 [査読有り]
A quad rotor helicopter (QRH), a type of unmanned aerial vehicle (UAV), uses a tilted attitude to generate a horizontal thrust component in the flying direction. In the case of autonomous control, the attitude control system is used to tilt the ai...
Akitaka Imamura   Shinji Uemura   Masafumi Miwa   Junichi Hino   Department of Electronics   Information   Communication Engineering   Osaka Sangyo University   Institute of Technology   Science   The University of Tokushima   Tokushima   
The 9th International Conference on Intelligent Unmanned Systems 034 2013年9月 [査読有り]
As UAV, Quad Rotor Helicopter (QRH) is tilted its attitude to generate horizontal force component for moving direction. In the case of autonomous control, attitude control system tilts the airframe against to the disturbance such as wind. As a res...
M. Miwa   Tokushima Univ   S. Kunou   Tokushima Univ   A. Imamura   Osaka Sangyo Uni   H. Niimi   Tokushima U   
The 9th International Conference on Intelligent Unmanned Systems 133 2013年9月 [査読有り]
In this study, we propose a new control method using an external input to PD attitude control system of Quad-Rotor Helicopter (QRH). We set a humanoid robot on the center of experimental QRH. When the humanoid robot takes a step forward, this moti...
Akitaka Imamura   Masafumi Miwa   Junichi Hino   Joon-Hwan Shi   Osaka Sangyo University   The University of Tokushima   Korea Maritime University   
The 8th International Conference on Intelligent Unmanned Systems pp.587-591 2012年10月 [査読有り]
In the case of autonomous control, attitude control system tilts the airframe against to the disturbance such as wind. As a result, the attitude of flying QRH always slants. In this study, extra thruster rotors are mounted to keep the position and...
Masafumi Miwa   Shinji Uemura   Yasuyuki Ishihara   Joon-hwan Shim   Akitaka Imamura   Kiyoshi Ioi   The University of Tokushima   Korea Maritime University   Osaka Sangyo University   Kinki University   
The 8th International Conference on Intelligent Unmanned Systems pp.280-284 2012年10月 [査読有り]
Recently, R/C single/multi rotor helicopter is used in fields of aerial photography and aerial investigation. But helicopter rotor blades are not covered, and the thrust is generated by high rotational speed. Thus R/C helicopter has a high risk of...
The 13th International Symposium on Advanced Science and Technology in Experimental Mechanics (13th ISEM'18) 2018年10月31日
Sustainable water resource conservation is now essential to secure sustained, sound, and high-quality water in the world. In this paper, a raiwater quality purification using waterwheel rotation was first considered through the experiment. Next, t...