@conference {17829, title = {A New Global Path Planning Strategy for Mobile Robots Using Hierarchical Topology Map and Safety-Aware Navigation Speed}, booktitle = {IEEE/ASME International Conference on Advanced Intelligent Mechatronics}, year = {2019}, publisher = {IEEE}, organization = {IEEE}, author = {Jeong Woo Han and Soo Jeon and Hyock Ju Kwon} }