Optimal coupling ratio selection for flexible appendage actuators

  title={Optimal coupling ratio selection for flexible appendage actuators},
  author={John B. Stetson},
Introduction A RTICULATED, flexible spacecraft appendages often depend on rotary, gear-coupled actuators for their orientation. Appendages requiring precise pointing are most frequently driven by dc servomotors or stepper motors connected to backlashless gear trains with high coupling ratios. The process of selecting the coupling ratio has historically been dominated by efforts to minimize lost motion (backlash) and weight. These constraints have been met in low-static-friction, high-efficiency… CONTINUE READING