TAPE TRANSPORT REEL SERVOMECHANISM

摘要

A tape transport system having a capstan servomechanism for velocity control of tape across a read/write head and separate reel servomechansims for tape supply and take-up control, and also having tape loops in vacuum columns, is provided with tape position feedback to each reel servomechanism to stabilize reel positions in a standby (zero capstan speed) condition from AC tachometers of the induction-generator type normally used during steady state (steady capstan speed) for velocity feedback.