초록 ▼

A device for determining the rotary-angle position of rotary drives which can also determine the rotary speed. A magnet rotor generating a rotating magnetic field is provided for the purpose of determining the rotary speed with a cam disc suited for screening magnetic field lines, and to arrange coa

A device for determining the rotary-angle position of rotary drives which can also determine the rotary speed. A magnet rotor generating a rotating magnetic field is provided for the purpose of determining the rotary speed with a cam disc suited for screening magnetic field lines, and to arrange coacting inductive transmitter and receiver heads on both sides of the cam disc, for determining the rotary-angle position. Due to the fact that the electromagnetic radiation emitted by the transmitter head is screened, the output signal of the receiver heads obtained is an envelope-modulated signal which can be evaluated for determining the position, for example by phase comparisons with additional envelope-modulated output signals of other receiver heads. The axial magnetization lines emanating simultaneously from the magnet rotor serve for inducing electric voltages in flat coils arranged axially before the magnet rotor, in overlapping annular shape.

대표청구항 ▼

A device for determining the rotary-angle position of rotary drives of electrical machines whereby electrical voltages are generated and evaluated by sensors responding to the rotary movements comprising: a plurality of at least three adjacent pairs of oppositely disposed transmitter and receiver he

A device for determining the rotary-angle position of rotary drives of electrical machines whereby electrical voltages are generated and evaluated by sensors responding to the rotary movements comprising: a plurality of at least three adjacent pairs of oppositely disposed transmitter and receiver heads, each said pair forming an inductive sensor arrangement and arranged in coaxial alignment; a cam disk concentrically mounted with respect to the rotary drives and rotatably disposed between said transmitter and receiver heads, said cam disk having a curved shape configured so at a given position it simultaneously fully screens at least a first pair of said transmitter and receiver heads from each other, partially screens at least a second pair of said transmitter and receiver heads from each other, and fully exposes at least a third pair of said transmitter and receiver heads.