SOLID FINAL-CONTROL DEVICE Russian patent published in 1995 - IPC

FIELD: electric instrumentation engineering. SUBSTANCE: solid final-control device has electromechanical converter divided with the aid of electrodes into active sections and placed between base and working tool of device, former of controlling electric field including analog- to-digital converter, register incorporating flip-flops and electronic keys. Converter is manufactured from material with transpolar phase transition from antiferroelectric phase into ferroelectric one. Lengths of adjacent sections of converter are related as 1:2 and their number is equal to number of positions of register. EFFECT: long-term storage of electromechanical characteristic, increased precision of micropositioning, efficiency and reliability with reduced energy consumption to keep fixed position of working tool. 2 cl, 2 dwg