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Limited signals forming with the given accuracy in the systems under disturbances

For the solving of various control tasks, the problem connected with formation of limited signals with acceptable properties often appears. We have similar problems for the realization of some control systems, and also for the production of signals which have informational characteristics intended for the appropriate information provision for various systems. Thus, it is very important that the required signals formation was carried out in a real time mode. There are numerous works in which the limited signals production for control systems are considered (A.A. Kolesnikov, 1987; R. Sepulchre et al., 1996). However, it is not shown how to provide the required accuracy of limited signal realization under the action of uncontrollable disturbances. In addition, the method of limited signals realization often is not effective enough and does not take into account the requirement of signals forming in real time mode. In this work, the approach for the specified problem solving is offered. The approach represents a direct algebraic synthesis method which is based on the phase limitations variation (V.N. Pilishkin, BMSTU News, vol. 1, p.23-34, 1998; V.N. Pilishkin and K.A. Pupkov, Proc. Euro. Control Conf., Session BP-13, no. F614, pp. 1-5, 1999).