Nonlinear L1 Adaptive Control with Feedforward Control Action and Its Application in Wind Tunnel
- Resource Type
- Conference
- Authors
- Zhu, Rusong; Xie, Mingwei; Guo, Zili; Gai, Wen; Tang, Gengsheng
- Source
- 2019 Chinese Control Conference (CCC) Control Conference (CCC), 2019 Chinese. :386-391 Jul, 2019
- Subject
- Computing and Processing
Robotics and Control Systems
Signal Processing and Analysis
Transportation
Adaptive control
Feedforward systems
Uncertainty
Wind tunnels
Standards
Nonlinear systems
L1 Adaptive Control
Adaptive Feedforward Control
Nonlinear System
Stagnation Pressure
Wind Tunnel.
- Language
- ISSN
- 1934-1768
L 1 adaptive control is a new control methodology developed in recent years with good robustness properties. But this control method could not provide full adaptive feedforward control in its generic structure. This paper introduces adaptive feedforward control action into the standard L 1 adaptive control architecture for nonlinear systems in the presence of matched un-modeled dynamics. This new control structure could effectively compensate known disturbances with linear gain uncertainty, which occur in the nonlinear systems, while retaining the closed-loop control performance of L 1 adaptive control. After the proof and discussions on the stability of this method, this new L 1 adaptive control structure is applied to stagnation pressure control in a wind tunnel. Simulation results and analysis demonstrate the effectiveness of the proposed control architecture.