Synthesis of sliding mode control for flexible-joint manipulators based on serial invariant manifolds

Le Tran Thang, Tran Van Son, Truong Dang Khoa, Nguyen Xuan Chiem

Abstract


This paper focuses on synthesizing sliding mode control (SMC) for flexible-joint manipulators (FJM) based on serial invariant manifolds in order to increase the control quality for the system. SMC based on the serial invariant manifolds is proposed. The control law is found based on synergetic control theory (SCT) and analytical design of aggregated regulators (ADAR) method. In order to improve the control quality due to the effect of the stiffness value between two links in the system, a mechanism for constructing manifolds is built. The time response of the outer loop manifolds close to the actuator will be larger in the next round. The control quality of the system can be pre-evaluated through the parameters of the designed manifolds. Global stability is demonstrated by using the Lyapunov function in the design process. Finally, the effectiveness of the proposed controller based on SCT is demonstrated by numerical simulation results and compared with the traditional SMC.

Keywords


Analytical design of aggregated regulators; Flexible-joint manipulators; Invariant manifold; Sliding mode control; Synergetic control theory

Full Text:

PDF


DOI: https://doi.org/10.11591/eei.v12i1.4363

Refbacks

  • There are currently no refbacks.


Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Bulletin of EEI Stats