International Journal of Applied Electromagnetics and Mechanics - Volume 39, issue 1-4

Authors: Fujii, Nobuo | Kanamitsu, Shuhei | Mizuma, Takeshi

Article Type: Research Article

Abstract: The characteristics in the linear induction motor (LIM) mode of new wireless energy transmission device are cleared analytically. The apparatus operates as two types of LIM with propulsion force or a linear transformer without thrust. One type of the LIM is a secondary current controlled wound type of LIM with primary winding on ground and the other is the LIM with reaction plate on ground. The paper shows the characteristics of the wound type of LIM …in power running and has the onboard power transmission function even in the power running. The two-dimensional finite element method (FEM) is used for the analysis. As a result, it is cleared that the model designed for urban transit has high efficiency and high input power factor respectively more than 0.9 for the optimal control. Show more

Keywords: Linear motor, LIM, linear transformer, wireless, energy transmission, non-contact power collection, light rail vehicle, FEM

DOI: 10.3233/JAE-2012-1575

Citation: International Journal of Applied Electromagnetics and Mechanics, vol. 39, no. 1-4, pp. 1035-1040, 2012

Authors: Tsuchimi, Daisuke | Okuyama, Takeshi | Tanaka, Mami

Article Type: Research Article

Abstract: A palpation is convenient and it is a useful method to detect a cancer and to evaluate softness of skin. However, the palpation is skillful method, and the mental/physical conditions of the experts affect the result of the palpation easily. The result of palpation is subjective and it is hard to share the result with the other people. Therefore, the development of the sensor that can measure the softness of the body is demanded. In this paper, a …relationship between physical properties of measured objects and the softness that human feel are investigated for a development of a tactile sensor system. At first, the relationship between tactile softness and stiffness of the measured objects is investigated. As a result, tactile softness decreases with the increase of stiffness of the objects. Next, the relationship between tactile softness and size of contact area of human finger are investigated. These results lead to the conclusion that there is a possibility that tactile softness of the objects are not only related to the contact force or displacement of a finger and the objects but also to the contact area of the finger and the measured objects. Show more

Keywords: Tactile, stiffness, softness

DOI: 10.3233/JAE-2012-1576

Citation: International Journal of Applied Electromagnetics and Mechanics, vol. 39, no. 1-4, pp. 1041-1046, 2012

Authors: Kobayashi, Futoshi | Kojima, Fumio | Nakamoto, Hiroyuki | Kida, Yasuaki | Imamura, Nobuaki | Shirasawa, Hidenori

Article Type: Research Article

Abstract: A humanoid robot hand receives much attention in various fields. We have developed the universal robot hand with the multi-axis force/torque sensors. In order to manipulate an object by the robot hand without dropping the object, it is important to detect a slip between the object and the robot finger. Therefore, we propose a slip detection method with the multi-axis force/torque sensor and an anti-slip control method based on the slip detection. The effectiveness of the …proposed slip detection and the anti-slip control is verified through some experiments with the universal robot hand. Show more

Keywords: Slip detection, force/toque sensor, robot hand

DOI: 10.3233/JAE-2012-1577

Citation: International Journal of Applied Electromagnetics and Mechanics, vol. 39, no. 1-4, pp. 1047-1054, 2012

Authors: Fukui, Wataru | Kobayashi, Futoshi | Kojima, Fumio | Nakamoto, Hiroyuki | Maeda, Tadashi | Imamura, Nobuaki | Sasabe, Kazuhiro | Shirasawa, Hidenori

Article Type: Research Article

Abstract: Although a number of multi-fingered robot hands have been developed, none of these hands is in actual use. One reason for this is that conventional control methods are not useful for multi-fingered robot hands. A human manipulates an object using tactile information (contact points, direction, and severity of reaction force). In the present paper, a tactile-based control method for multi-fingered robot hands, which mimics human manipulation, is proposed. In the proposed method, three fingers are used …for object manipulation, and object grasping and manipulation is achieved. The proposed method is implemented in Universal Robot Hand II, and its effectiveness is verified. Show more

Keywords: Multi-fingered robot hand, manipulation, tactile information

DOI: 10.3233/JAE-2012-1578

Citation: International Journal of Applied Electromagnetics and Mechanics, vol. 39, no. 1-4, pp. 1055-1061, 2012

Authors: Otsuki, Manabu | Okuyama, Takeshi | Tanaka, Mami

Article Type: Research Article

Abstract: This paper aims to clarify time response properties of a solid polymer electrolyte (SPE) sensor. SPE film has been attracted attention in wide range of fields, and it is expected to be used as soft actuators and sensors. SPE film can reversely convert electrical energy into mechanical energy. Moreover, SPE film is lightweight, flexible, and has good workability and air-stable output. Although authors have been investigated output characteristics of an SPE sensor, time response properties of …the sensor have not been inspected. In the paper, to reveal time response properties of the SPE sensor, the sensor output behaviors for several deformation velocities are measured and evaluated. Maximum voltages in the transient response and output attenuations for constant deformation are analyzed. Results show that the attenuation characteristics depend on the sensor deformation velocity, and maximum voltages in the transient response are independent of deformation velocities. Show more

Keywords: Solid polymer electrolyte, sensor, time response, measurement

DOI: 10.3233/JAE-2012-1579

Citation: International Journal of Applied Electromagnetics and Mechanics, vol. 39, no. 1-4, pp. 1063-1068, 2012

Article Type: Other

Abstract: Preface to the Selected Papers from the 15th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2011) special issue.

Citation: International Journal of Applied Electromagnetics and Mechanics, vol. 39, no. 1-4, pp. 1069-1086, 2012