title: Stable proportional-derivative controllers.
authors.lastname: Jie Tan
authors.forename: Karen
authors.initials: K
authors.lastname: Liu
authors.forename: G
authors.initials: G
authors.lastname: Turk
mesh_terms: D000465:Algorithms; D003196:Computer Graphics; D003198:Computer Simulation; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D009068:Movement / Q000502:physiology*