... positioningantenna reflectors, opening and closing security gates, handlingmaterials, and raising and lowering scissors-type lift tables,machine hoods, and light-duty jib crane arms.Other linear ... by various mechanical devices. Oneof these is the use of internal lands or ball bearings and slots orraces that convert a pull-in stroke to rotary or twisting motion.Motion control and process ... per pole and the multitoothed rotor is illustrated in Fig. 15.The shaft is represented by the central circle in the diagram.The most popular hybrid steppers have 3- and 5-phase wiring, and step...