For access to this article, please select a purchase option:
Buy conference paper PDF
Buy Knowledge Pack
IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.
Three previous papers proposed modifications to the generalized predictive control algorithm which guarantee closed-loop stability. The first two adopted the philosophy of constrained receding horizon predictive control (CRHPC), whereas the third adopted a stable generalized predictive control (SGPC) strategy: first stabilize then control the plant. Here the authors examine the relationship between CRHPC and SGPC and show that theoretically the two approaches are equivalent, but that CRPHPC could be subject to significant numerical instability problems. Two improved implementations of CRHPC are proposed, but SGPC is shown to have better numerical stability and efficiency.