** 회전 브러쉬 높이 조절 메커니즘 개발
** 사이드 청소 효율 증대를 위한 유로 설계
=주요논문=
* 2013, A modified ant colony optimization algorithm for dynamic topology optimization, Comput.Struct., Vol. 123, pp. 68-78.
* 2013, Application of artificial bee colony algorithm to topology optimization for dynamic stiffness problems, Comput.Math.Appl., Vol. 66, No 10, pp. 1879-1891.
* 2014, Mechanism for reducing stress concentration in bolt-nut connectors, IJPEM, Vol. 15, No. 7, pp. 1337-1343.
=주요저서=