A Lagrange-Newton-SQP method is analyzed for the optimal control of the Bur
gers equation. Distributed controls are given, which are restricted by poin
twise lower and upper bounds. The convergence of the method is proved in ap
propriate Banach spaces. This proof is based on a weak second-order suffici
ent optimality condition and the theory of Newton methods for generalized e
quations in Banach spaces. For the numerical realization a primal-dual acti
ve set strategy is applied. Numerical examples are included.