Constant speed control device

Abstract

Abstract PURPOSE:To control velocities of two motors to equalize them by providing a two-phase pulse generating means which outputs a pair of two-phase pulses obtained by averaging two pairs of two-phase pulses, an adjusting signal output means, and an arithmetic part. CONSTITUTION:Servo parts 71 and 72 drive motors M1 and M2 by signals of a tachogenerators TG1 and TG2 and pulse generators PG1 and PG2 and control signals. A velocity equalizing controller consists of a two-phase pulse generating part 10 consisting of pulse processing circuits 11 and 12, OR circuits 21 and 22, a counter 31, and a two-phase pulse generating circuit 5, an adjusting signal output part 20 consisting of OR circuits 23 and 24, a counter 32, and a D/A converting part 4, and an arithmetic part 30 consisting of computing elements 61 and 62. In this controller, the pair of two-phase pulses are fed back, and the adjusting signal output part 20 outputs an adjusting signal so that the difference of the number of pulses between them is zero, and an inputted velocity command signal is adjusted by this adjusting signal.

Inventors

• 👤 Kenji Hara
• 👤 憲二 原

Bibliographic Details