Method of driving at least one capacitive actuator

Details Method of driving at least one capacitive actuator Method of driving at least one capacitive actuator

1999-12-06

2000-10-17

Berhane, Adolf Deneke

Electricity: battery or capacitor charging or discharging

Capacitor charging or discharging

318116, 310317, H02J 716, H02N 700, H01L 104

Patent

active

061337145

ABSTRACT:
A method of driving at least one capacitive actuator with a charge voltage. From a charge quantity .DELTA.Q supplied to the actuator and from the actuator voltage U.sub.p applied to the actuator after the charging operation is terminated, the actuator capacitance is calculated by the equation C.sub.p =.DELTA.Q/U.sub.p. From these values, the energy E.sub.actual =0.5*C.sub.p *U.sub.p.sup.2 =0.5*.DELTA.Q*U.sub.p is calculated. The charge voltage is regulated such that the energy actually supplied is equivalent to a specified desired value.

REFERENCES:
patent: 4688536 (1987-08-01), Mitsuyasu et al.
patent: 5387834 (1995-02-01), Suzuki
patent: 5543679 (1996-08-01), Morina et al.
patent: 6016040 (2000-02-01), Hoffmann et al.

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