Research topics

Useful machines should be easy to use in addition to being high precision and high performance systems. Based on this convention, SATO Kaiji research group studies the following researches.

(A) Micro-Manipulator for Operating Microparts and Cells


The purpose of this research is to realize a micro-manipulator system that have the following features for operation of micro objects such as micro artificial parts, cells and living bodies;

(a) It can operate various types of micro-size objects in air, liquid and boxed-in space.

(b) It is easy to replace the end-effectors of the grippers for multi-purpose use.

(c) The micro-grippers are small enough to keep observing the motions of many driving grippers under a microscope.

(d) The driving systems are isolated from the work space and free from the influence of the environment in the work space and wiring problems.

(e) The grippers can provide sufficient force (> 1 mN)

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(B) Ultrahigh-Acceleration and High-Velocity Mechanisms and the Application

fig_halms4b.pngThe purpose of this study is to realize an ultrahigh-acceleration and high-velocity linear motor for precision industrial machines with a long working range. The acceleration and velocity goals are 100G and 10 m/s, respectively. These are much higher than current linear motors.

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

fig_lsrm2a.pngThe purpose of this research is to clarify the design and fabrication process for thin and compact linear actuators which are easy to fabricate, assemble, disassemble and recycle. For that purpose, novel compact linear/planar switched reluctance motors with a simple and thin layer structure have been studied. The actuators will be able 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.

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(D) Practical and Intuitive Controller Design for Precision Motion Systems

The purpose of this study is to clarify a practical and intuitive controller design procedures for precision positioning and precision motion control. The design procedures are easy for engineers to use and do not require exact dynamic models and much knowledge of control theory.


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(E ) Self-Alignment of Microparts Using Liquid Surface Tension

The purpose of this research is to establish a self-alignment method for microparts assembly using liquid surface tension in the air.

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Key words: Electromagnetic actuator, Linear motor, Planar motor, Electrostatic actuator, Precision motion system, Control, Positioning, Micro-dynamics, Manipulator, Self-alignment, Optical switch, Pneumatics

Research Fields: Actuator engineering, Precision engineering, Control engineering, Micro engineering