Digital servo-circuit

Abstract

Abstract PURPOSE:To decrease the number of external parts in case of application of IC, to reduce a cost, to reduce an occupied area, and to automate adjustment, by digitally executing gain setting, mixing setting, phase compensation, etc., and processing all of them in the IC. CONSTITUTION:To a multiplier 23, a prescribed data is set as a coefficient data KDS when an electric power supply is turned on, so that a drum motor 2 is rotated at a prescribed speed (free run speed). To a digital filter and a multiplier 24, the coefficient data KDP is loaded, by which switching of the digital filter and the single multiplier is executed. To a servo-IC 17, a specified adjusting signal is supplied, an output monitor is provided on its output side, and an optimum coefficient data for making a drum motor 2 and a capstan motor 3 execute a prescribed rotation by said output monitor is stored in memory of a microprocessor 18, by which adjustment is executed automatically.

Inventors

• 👤 Shigeru Tajima
• 👤 茂 田島
• 👤 Kenji Nakano
• 👤 中野　健次
• 👤 Tadahiko Nakamura
• 👤 忠彦 中村

Bibliographic Details