S.G. Gurzhin, S.V. Nikitin

Because of the principle of job by influence on the patient of a pulse magnetic field magnetotherapeutic equip-ments (МТE) are a source of strong electromagnetic noises. Attempts of carrying out of diagnostics during time magnetotherapeutic a session encounter a problem of electromagnetic compatibility МТE and diagnostic systems. This problem is especially actual at охватывании systems the МТE-patient a feedback, capable to optimize mag-netic field parameters on changes of biophysical indicators of object. In the given work it is offered to form impulses of a magnetic field of the certain form for reduction of level of electromagnetic noises. Thus there should be a certain equivalence between available in MTE impulses and a synthesized impulse. Equality is meant equivalence of impulses their energy. In work optimisation of the form of impulses by two criteria is made и (1) , (2) where and ? effective width of a spectrum and effective duration of an impulse accordingly. The minimum of expressions (1) and (2) is searched in the presence of following additional restrictions и , (3) here ? duration of an impulse, ? amplitude of an impulse, and ? a constant defining the maximum amplitude of an impulse. The decision of tasks in view is made by means of the device of calculus of variations. Expressions for forms of impulses satisfying to criteria (1) and (2) taking into account restrictions (3) are received. The comparative analysis of the received results is made. The optimisation of the form of an impulse of a magnetic field resulted in work allows to improve electromagnetic compatibility MTE and diagnostic systems.