Explicit model predictive control for active suspension systems with preview
- Resource Type
- Authors
- Theunissen, Johan
- Source
- Subject
- Active suspension
Regionless explicit model predictive control
Preview
Ride comfort
- Language
- English
Latest advances in road profile sensors make the implementation of pre-emptive suspension control a viable option for production vehicles. From the control side, model predictive control (MPC) in combination with preview is a powerful solution for this application. However, the significant computational load associated with conventional implicit model predictive controllers (i-MPCs) is one of the limiting factors to the widespread industrial adoption of MPC. As an alternative, the authors of this study propose an explicit model predictive controller (e-MPC) for an active suspension system with preview. The MPC optimization problem is an mp-QP problem and is run offline. The online controller is reduced to a function evaluation. To overcome the increased memory requirements of e-MPC, the presented controller uses the recently developed regionless e-MPC approach. The controller was assessed through simulations and experiments on a sport utility vehicle (SUV) demonstrator with controllable hydraulic suspension actuators. For frequencies