A Linear-Programming Predictive Controller with Variable Horizon

A multivariable predictive control strategy characterized by a variable prediction horizon is proposed and evaluated Simplicity of use is obtained by utilizing a single-point prediction scheme and linear programming techniques to satisfy process constraints. The prediction horizon is adjusted automatically. The technique requires fewer tuning parameters than a multivariable PID structure. Experimental evaluation in a pressurized liquid reservoir suggests that the controller is highly performing and capable of tolerating modeling errors. It compares favorably with a well-tuned multiloop PID strategy. Adaptive implementation of the technique is straightforward.