High speed solenoid control techniques

Some specialized power control strategies and electronic drive circuits available to enhance solenoid performance, together with a discussion on the relative merits of each, are presented. The operating principles of the solenoid are examined, and some insight is given as to the areas where it is possible to benefit from power control techniques. Digital solutions to the equations governing solenoid operation are presented, allowing quick evaluation of the various control techniques. A dual-level control scheme is shown to greatly improve the performance characteristics of the solenoid, as a force producer. The improvements may be concentrated in one or more areas (speed, stroke, force, or actuator size) depending on the application.<>