Home > Published Issues > 2019 > Volume 8, No. 6, November 2019 >

Controller Design and Trajectory Tracking of a Two-Link Robotic Orthosis via Sinusoidal-Input Describing Function Model

Kar Mun Chin, Sze-Hong Teh, Jee-Hou Ho, and Hoon Kiat Ng
The University of Nottingham, Semenyih, Malaysia

Abstract—This paper presents an application of controller design using sinusoidal-input describing function (SIDF) for a two-link robotic orthosis, which is a non-linear multivariable system. A controller based on closed-form solution of lead-lag compensator is generated via unified approached technique. The performance of the controller is evaluated with step response, tracking and decoupling qualities as well as the trajectories tracking and this is compared with the conventional PID controller. 

Index Terms—controls, describing function, lead-lag compensator, robotic orthosis

Cite: Kar Mun Chin, Sze-Hong Teh, Jee-Hou Ho, and Hoon Kiat Ng, "Controller Design and Trajectory Tracking of a Two-Link Robotic Orthosis via Sinusoidal-Input Describing Function Model" International Journal of Mechanical Engineering and Robotics Research, Vol. 8, No. 6, pp. 845-851, November 2019. DOI: 10.18178/ijmerr.8.6.845-851