The properties of symmetric matrix are exploited to design adaptive fuzzy prescribed performance controller, and a Nussbaum-type function is incorporated in the controller to estimate the unknown control direction.
This property to move persistently along walls enabled us to design patterns that control direction of movements, resulting in uni-directional circling or one-way gating between two areas.
The altitude dynamics is converted into a pure feedback formulation with an unknown control direction, based on which, a novel adaptive neural controller that is quite simpler than the ones derived from back-stepping designs is achieved.
This paper investigates the global adaptive state feedback controller design for a class of feedforward nonlinear systems with completely unknown control direction and unknown growth rate.
The latest comes from a California-based company, Hoverboard Technologies, which plans to release a device on 17 September that uses a central wheel that acts like a gyroscope to maintain balance, control direction and create a "floating feeling" for users.
Nussbaum function is used to deal with unknown control direction.
The Nussbaum function is used to relax the requirement on control direction.
And Nussbaum gain method is used to solve the uncertain control direction function.
Adaptive backstepping technology is utilized to handle the difficulties caused by the unknown control direction in every order's dynamics.
The interface can replace with the mouse to control direction intention of a user by the method of frame difference.
For the problem of the unknown control direction, a Nussbaum-type function is introduced to handle it.
