DRIVE DEVICE FOR AN ELECTROMOTIVE ACTUATOR

摘要

In an electromotive actuator having a plurality of groups of in each case n coils S1 - Sn, to which in each case one invertor U1 - Un is allocated, in order to be able to form both individual load circuits and group load circuits of different size, group switches 12, 23, 34 ... (n - 1)n are located between the coils S1 - Sn, while isolating switches 11, 11', 22, 22' ... are located between the invertors U1 - Un and the coils S1 - Sn. The individual invertors are each divided into two half bridges 131, 132; 231, 232 .. on the basis of the said switches. If a plurality of coils are connected in series, they form, for example, coil pairs S1, S2; S3, S4 ..., the half-bridge pair which is located on the input side or output side of the coil series circuit being used to drive the coil series circuit.