Basic Technology Laboratory

M. Matsumoto

Mitsuhiro Matsumoto
(Associate Professor)

Office: 23-708 Ext.: 3836
Laboratory: 5-219 Ext.: 3111


03/2011, Ph. D., University of Tsukuba

Research Field

Intelligent Mechanics, Measurement Engineering

Research Subjects

  • 1. Task support equipment for correcting deformed bicycle wheels.
  • 2. 2D laser range sensor system for scanning the front and lateral sides of an object.


A bicycle wheel consists of a hub, spokes, nipples, and a rim. The rim deforms from a true circle to an irregular circle when a worker assembles the wheel. The rim must be a true circle for the wheel to be used safety. The worker needs to correct the deformed rim by relation between nipple position relative to the desired nipple rotation angle and rim displacements. I developed task support equipment to correct the deformed rim with these relation, so that the worker does not need to know them. The task support equipment shows the worker the intended nipple position for use in setting the nipple rotation angle. I measured the relation between the nipple rotation angle and the rim displacement and suggested a method to calculate the corrected rim displacements based on the relation. I created the hardware and software for the task support equipment and checked the performance of the task support equipment by correcting deformed rims.
I developed a 2D laser range sensor system, consisting of a 2D laser range sensor and a mirror based ellipse. The 2D laser range sensor can simultaneously scan the front side of the object and the lateral sides of the object densely with the laser light reflected by the mirror. I examined design conditions for the mirror based on the relation between the sensor and the object in the sensor system. I designed and made the mirror according to the design conditions and constructed the system from the sensor and the mirror. I took the reflecting points on an object experimentally with the sensor system and checked the positions of the scanned reflecting points to evaluate the system.

  • 1) M. Matsumoto, “Task support equipment for correcting deformed bicycle wheel”, Transactions of the JSME (in Japanese), vol. 82, pp. 15-00127 (2016), DOI: 10.1299/transjsme.15-00127.
  • 2) M. Matsumoto, “2D laser range sensor system for scanning front side and lateral side of object”, Transactions of the JSME (in Japanese), vol.82, pp.15-00501 (2016), DOI: 10.1299/transjsme.15-00501.
Affiliated Academic Organizations

The Japan Society of Mechanical Engineers

Current members
◯ Associate Professors: 1 ◯ Undergraduates: 10