Constrained Optimal Control of Linear and Hybrid Systems by Francesco Borrelli

By Francesco Borrelli

Many functional keep an eye on difficulties are ruled by way of features similar to kingdom, enter and operational constraints, alternations among varied working regimes, and the interplay of continuous-time and discrete occasion structures. at this time no method is on the market to layout controllers in a scientific demeanour for such structures. This ebook introduces a brand new layout concept for controllers for such restricted and switching dynamical structures and results in algorithms that systematically resolve keep an eye on synthesis difficulties. the 1st half is a self-contained advent to multiparametric programming, that's the most process used to check and compute nation suggestions optimum regulate legislation. The book's major target is to derive houses of the country suggestions answer, in addition to to procure algorithms to compute it successfully. the focal point is on restricted linear structures and limited linear hybrid structures. The applicability of the speculation is validated via experimental case reviews: a mechanical laboratory approach and a traction keep an eye on procedure constructed together with the Ford Motor corporation in Michigan.

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Also let Ri = x∈Y : where b ∈ Rm×1 and let Rrest Ai x > bi Aj x ≤ bj , ∀j < i i = 1, . . , m ∪m i=1 Ri . , {R0 , R1 , . . , Rm } is a partition of Y . Proof: (i) We want to prove that given an x ∈ Y , then either x belongs to R0 or to Ri for some i. If x ∈ R0 , we are done. Otherwise, there exists an index i such that Ai x > bi . Let i∗ = min{i : Ai x > bi }. Then x ∈ Ri∗ , as ∗ ∗ i≤m Ai x > bi and Aj x ≤ bj , ∀j < i∗ , by definition of i∗ . (ii) Let x ∈ R0 . Then there does not exist any i such that Ai x > bi , which implies that x ∈ Ri , ∀i ≤ m.

34) 1 2 3 4 5 6 7 8 9 10 11 12 Let K ⊆ Rn be the set of parameters (states); execute partition(K); end. 9; For each new sub-region Ri, partition(Ri ); end procedure. 9 into polyhedral sets Ri , use the same method to partition each set Ri further, and so on. This can be represented 36 1 Multiparametric Programming: a Geometric Approach as a search tree, with a maximum depth equal to the number of combinations of active constraints (see Sect. 5 below). The algorithm solves the mp-QP problem by partitioning the given parameter set K into Nr convex polyhedral regions.

Then x ∈ Ri∗ , as ∗ ∗ i≤m Ai x > bi and Aj x ≤ bj , ∀j < i∗ , by definition of i∗ . (ii) Let x ∈ R0 . Then there does not exist any i such that Ai x > bi , which implies that x ∈ Ri , ∀i ≤ m. Let x ∈ Ri and take i > j. Because x ∈ Ri , by definition of Ri (i > j) Aj x ≤ bj , which implies that x ∈ Rj . 9 for partitioning the set of parameters K, consider the case when only two parameters x1 and x2 are present. 5(a), K is defined by the in+ − + equalities {x− 1 ≤ x1 ≤ x1 , x2 ≤ x2 ≤ x2 }, and R0 by the inequalities {C1 ≤ 0, .

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