Article History
Received: 26 April 2016
Accepted: 1 December 2017
First Online: 12 February 2018
Change Date: 18 April 2018
Change Type: Erratum
Change Details: The first author’s affiliation was no longer in use in the original version of the article and it should be replaced as follows: School of Mechano-Electronic Engineering, Xidian University, Xi’an 710071, China.