An evaluation value E.sub.k on a trajectory error e.sub.k between an actual trajectory y.sub.k and a target trajectory x is calculated. In a case where the calculated evaluation value E.sub.k is better than a best evaluation value E.sub.best, the best evaluation value E.sub.best is updated by the evaluation value E.sub.k and is stored. A commanded trajectory u.sub.k in this situation is employed as a best commanded trajectory u.sub.best and stored. In a case where the calculated evaluation value E.sub.k is worse than the best evaluation value E.sub.best, a compensator that calculates a correction of the trajectory u.sub.k+1 is changed to another compensator and the correction of the trajectory u.sub.k+1 is calculated. A commanded trajectory in the next-time operation u.sub.k+1 is calculated from the correction of the trajectory u.sub.k+1 and the best commanded trajectory u.sub.best.

An evaluation value E.sub.k on a trajectory error e.sub.k between an actual trajectory y.sub.k and a target trajectory x is calculated. In a case where the calculated evaluation value E.sub.k is better than a best evaluation value E.sub.best, the best evaluation value E.sub.best is updated by the evaluation value E.sub.k and is stored. A commanded trajectory u.sub.k in this situation is employed as a best commanded trajectory u.sub.best and stored. In a case where the calculated evaluation value E.sub.k is worse than the best evaluation value E.sub.best, a compensator that calculates a correction of the trajectory u.sub.k+1 is changed to another compensator and the correction of the trajectory u.sub.k+1 is calculated. A commanded trajectory in the next-time operation u.sub.k+1 is calculated from the correction of the trajectory u.sub.k+1 and the best commanded trajectory u.sub.best.

A method for producing workpieces using a manufacturing installation includes obtaining a data set defining desired workpiece characteristics of workpieces. The method includes producing a first workpiece in first successive manufacturing steps using a first manufacturing machine. The method includes repeatedly recording first process parameters during the first successive manufacturing steps. The method includes mapping the first process parameter sequences onto the first successive manufacturing steps to obtain first sequential mapping data. The method includes inspecting the first workpiece using a metrology device to obtain actual first workpiece characteristics. The method includes comparing the actual first workpiece characteristics with the desired workpiece characteristics to determine deviations. The method includes determining second control commands based on the deviations, at least one of the first control commands and the data set, and the first sequential mapping data. The method includes producing a second workpiece using the second control commands.