Tape drive capstan motor servo system with static friction compensation

摘要: A system and apparatus for startup speed regulation of low-inertia capstan motors under circumstances where the load during may vary widely. stiction handler provides dynamic control motor drive voltage imposed to overcome stationary friction, minimizing power consumption on independently variations in drag or inertia. stepped speed-up signal is applied instead a conventional constant current-limited sawtooth ramp signal. Motor at each step This invention particularly useful, example, low-power magnetic tape drives that must efficiently adapt between one cassette cartridge another.