Name
Abstract | ||
|---|---|---|
This paper introduces a feedforward charge control method, which controls the displacement by the, amount of current fed to the actuator The method includes estimation and compensation of the power losses occurring in the actuator Power losses are estimated with an experimentally created dynamic model, that does not include the load and self heating effects.Even though the method is based onfeedforward control, the amount of current is controlled in closed loop, using a precise current measurement and a PID controller.Experiments with a piezo bender show promising results; the hysteresis was nearly reduced to one part in twenty and drift to one part in ten, in comparison to open-loop voltage control. The proposed method can predict the power losses quite accurately and can therefore be utilized not only for the control but also for power estimation in applications where power consumption is critical. |
Year | DOI | Venue |
|---|---|---|
2002 | 10.1109/IRDS.2002.1044041 | IROS |
Keywords | Field | DocType |
closed loop systems,compensation,dielectric losses,electric current control,electric current measurement,feedforward,piezoelectric actuators,three-term control,PID controller,closed-loop control,current control,current measurement,displacement control,feedforward charge control method,piezo bender,piezoelectric actuators,power loss compensation,power loss estimation | Piezoelectric actuators,PID controller,Charge control,Computer science,Control theory,Hysteresis,Power loss,Control engineering,Actuator,Power consumption,Feed forward | Conference |
Volume | Citations | PageRank |
2 | 2 | 0.41 |
References | Authors | |
2 | 3 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Pekka Ronkanen | 1 | 2 | 0.41 |
| Pasi Kallio | 2 | 41 | 11.88 |
| Heikki N. Koivo | 3 | 90 | 20.56 |