Positioning controller

Abstract

Abstract PURPOSE:To suppress the oscillation of a positioning control system according to variation of load characteristics, by selecting a notch filter, when a step response varies. CONSTITUTION:A microstep position command from CPU1 is converted into an each-phase current command value by ROMs 3, 3' and given to D/A converters 4, 4'. Outputs of said D/A converters 4, 4 are connected with a set of notch filters (51, 51') selected by a switching means 2. Respective sets of notch filters (51, 51'), (52, 52'), (53, 53')... have frequency characteristics differing little by little from each other. Then, when a notch filter 5 most adapted for frequency characteristics of a stepping motor 21 is selected and used, it is possible to suppress the oscillation of a positioning control system.

Inventors

• 👤 Kiyoyasu Okuda
• 👤 Tetsuo Morita

Bibliographic Details