Application of estimation method in invariant control problems
The paper considers the invariance principle which can be applied for synthesis of system operating under conditions of uncertainty. But it is not always possible for invariant systems to find out the solution of equations system which describes the given system. In order to find out the value of unknown parameters of equations system approaching the solution estimation method can be applied. In this case, synthesized system will be quasiinvariant to change of system state in accordance with certain estimation criterion.