Funding for this research was provided by:
National Research Foundation of Korea (Nos. NRF-2018R1C1B5085752, NRF-2016R1A6A3A03012011)
FANUC Corporation (None)
ALMT Corporation (None)
Korea Aerospace University (2018 KAU Faculty Research Grant)
Article History
Received: 7 December 2018
Revised: 13 February 2019
Accepted: 6 May 2019
First Online: 29 May 2019