New Concept for Fabrication and Inspection of Micro-Objects
◆Novel Compact Linear/Planar Switched Reluctance Motor.

In order to provide a system capable of easily changing its configuration and suitable for mass production of processing, assembly and inspection of minute objects including organisms, the following motion systems have been studying:

    • (1) a thin and simple translation stage with a film-like mover which is disposable and easy to set the object and
    • (2) the surface tension of the liquid, the method of aligning objects autonomously (self alignment).

Novel Compact Linear/Planar Switched Reluctance Motor with a Simple and Thin Layer Structure

The purpose of this research is to clarify the design and the fabrication process for thin and compact linear actuators, which are easy to fabricate, assemble, dissemble and recycle. For that purpose, novel compact linear switched reluctance motors with a simple and thin layer structure have been proposed. The proposed motors are based on linear switched reluctance motors (LSRMs). Thus they are free from problems caused by powerful PMs such as the necessity of rare earth elements, powerful attractive forces which make it difficult to assemble and dissemble. Additionally, they have a simple and high robust configuration, which lead to reliable and low-cost systems. The proposed LSRMs have coils at both ends of the stator so as to have a thin shape, which is important for systems with a limited work space. The mover has a simple and thin shape, leading to easy fabrication and space savings.

Two types of the prototype LSRMs have been made. One has a thin, light and easily replaceable mover. The mover can be used as a disposable sheet mounting microparts and test bodies. The other has a multilayer structure for generating large thrust. Their driving characteristics have been examined by experiment and numerical analysis. Figure 1 shows an application example of a single mover layer LSRM, which are used for a system capable of easily changing its configuration and suitable for mass production of processing, assembly and inspection of minute objects including organisms. Figure 2 shows a prototype single layer LSRM.

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Fig.1 Application example of the LSRM

Fig.2 Motion of the LSRM [Video: Click the figure]

Key papers

[1]
Kaiji Sato: Novel Compact Linear Switched Reluctance Motor with a Thin Shape and a Simple and Easily Replaceable Mover, Journal of Advanced Mechanical Design, Systems, and Manufacturing, Vol.7, No.3, (2013) pp.295-304.
[2]
Kaiji Sato : Effect of Multilayering on Thrust Force Characteristics in Compact Linear Switched Reluctance Motors with a Simple Layer Structure, Int. J. of Automation Technology, Vol.7, No.5, (2013) pp.482-488.