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Article
Publication date: 1 December 2004

Yoshifumi Okamoto, Toshio Imai, Daisuke Miyagi, Norio Takahashi, Kazuhiro Ozaki, Hiroshi Ono and Naoki Uchida

Induction heating is widely used in the industry due to high efficiency, precise control, rapid heating and low pollution properties. To process a semiconductor of high…

Abstract

Induction heating is widely used in the industry due to high efficiency, precise control, rapid heating and low pollution properties. To process a semiconductor of high quality, uniform heating is necessary, but it is not easy to heat uniformly by using the conventional induction heating equipment. For this purpose, the zone control induction heating equipment is jointly developed with Mitsui Engineering Shipbuilding Co., Ltd. In this paper, the optimization of current in each coil is carried out using the finite element method and the optimization method in order to obtain a uniform eddy current loss distribution on graphite.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 23 no. 4
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 22 June 2010

Koichi Kirihara, Norihiko Saga and Naoki Saito

The purpose of this paper is to describe the development of a device to support rehabilitation of a patient's upper limb motion.

Abstract

Purpose

The purpose of this paper is to describe the development of a device to support rehabilitation of a patient's upper limb motion.

Design/methodology/approach

The device has five degrees of freedom by virtue of its link mechanism. It consists of Joints 1‐5. Apparatus for use in so‐called welfare applications, such as this device, must be safe, flexible, and lightweight. A pneumatic cylinder, arranged and integrated with the device, was used to operate it. The device has two rehabilitation modes corresponding to different rehabilitation contents. The first mode is the muscular recovery and movable region expansion mode (Mode A). The second mode is a practical function recovery mode (Mode B). A compliance control and a position control system are applied for those modes.

Findings

By arranging the pneumatic cylinder optimally, results show that the device has compact and wide operating range and compliance‐control performance for Mode A. Position‐control performance for Mode B was verified experimentally. Moreover, the paper evaluates the effectiveness of the device and its control system through electromyography, which confirms that the developed device can support a patient's rehabilitation training.

Originality/value

The device has a simple link mechanism and an attached pneumatic cylinder, thereby constituting a lightweight and compact mechanism. The device has two rehabilitation modes corresponding to different rehabilitation contents. Using the device, a patient can conduct muscular power recovery training, movable region expansion training, and upper limb practical function recovery training.

Details

Industrial Robot: An International Journal, vol. 37 no. 4
Type: Research Article
ISSN: 0143-991X

Keywords

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