| 摘要 |
FIELD: electricity.SUBSTANCE: invention relates to electrical engineering. A device (11) comprising a magnetic field sensor (30) and an electric machine (10) with two parts (12, 14) movable in respect to each other is proposed. The magnetic field sensor (30) aimed at the registration of magnetic field emerging from the second part (14) of the electric machine and at the formation and issuing of an electric quantity (31) defining the parameter of the registered magnetic field (26), is fixed on the first part (12) of the electric machine. The electric quantity (31) generated by the magnetic field sensor is delivered to a processing unit (42) which defines the value of relative motion (32) between the first (12) and the second (14) parts of the electric machine (depending on the rotary speed and/or on velocity) basing on this electric quantity (31). The application also gives description to the method of determining the value depending on the rotary speed or velocity which implies that the magnetic field (26) emergent from the second part (14) of the electric machine (10) is registered with the help of the magnetic field sensor (30). The magnetic field sensor (30) forms the electric quantity (31) defining the parameter of the registered magnetic field (26). Accounting for this electric quantity (31) depending on the rotary speed, respectively, on the velocity, the value of relative motion (32) between both (12, 14) parts of the electric machine is defined.EFFECT: possibility to define rotary speed without a rotary speed sensor.9 cl, 3 dwg |
