摘要:
This method is for controlling a brushless motor (1) provided with several coils (41, 42, 43) and at least one sensor (106, 107, 108) adapted to detect the angular position of a rotary part (102) fast in rotation with a rotor (2) of the brushless motor and to generate a corresponding position signal (S' 110 ). This method includes the steps of (a) making said rotary part (102) and said rotor (2) fast in rotation; (b) mechanically driving said rotor (2) in rotation; (c) registering, for several angular position of said rotary part in one rotation, an output value (M i ) of the sensor and of the tension (U i , V i , W i ) generated in each coil (41, 42, 43) due to the rotation of the rotor; (d) accessing said memory and selecting electrical tension values (U i , V i , W i ) in said memory on the basis of a measured value (M) included in said position signal (S' 110 ); and (e) generating in a controller (110) at least one control signal (∑' 41 , Σ' 42 , Σ' 43 ) for a motor power supply (5) on the basis of the electrical tension values (U i , V i , W i ) selected in step (d).
摘要:
The invention relates to a device for detecting the rotation speed of a rotating element (1) supported by at least one external rotating ring (7) with at least one antifriction bearing (5). At least one internal non-rotating ring (9) of the antifriction bearing is solidly connected to a shaft (16) mounted on a support (20). The inventive device comprises a non-rotating sensing means (31) adjacent to the bearing and a rotating coding means (29). The coding means is at least partially fixed by magnetisation to a flange which is integral to the rotating ring and which is made from a magnetisable material.
摘要:
This sensor assembly (5) comprises a sensor unit (6) holding a sensing element (62) arranged to read a rotatable target (85), a holding member (7) for holding the sensor unit (6) and attaching means to removably attach said sensor unit (6) to said holding member (7). The holding member (7) has a shape configured to be housed in an internal volume (43) of a casing (4) for housing a rolling bearing (2) apart from the sensor assembly (5).
摘要:
The invention concerns a roller device with instrumented ball bearing of the type supported by a non-rotating element and provided with a sensor of rotational parameters, characterised in that the ball bearing (2) and the sensor means (4) are rigidly mounted on a fixing element (3) adapted to co-operate with another mechanical member for fixing the device.
摘要:
The invention concerns an instrumented bearing, in particular for an electric steering wheel (12), comprising an outer element (1) and an inner element (6) whereof one is mobile relative to the other which is fixed, by means of at least a row of rolling elements (14) arranged between said elements, and by detection (22, 23, 31) of rotational parameters of the rotating element. The invention is characterised in that it further comprises electronic means (34) for processing signals emitted by the detecting means and electronic means (35) for controlling at least an actuator electrically connected to the device, advantageously arranged on a printed circuit plate (33) fixed in rotation.
摘要:
This support member (60) holds at least two sensors (80) with respect to a rotating encoder washer (20) of a rolling bearing assembly (2). It includes an annular ring (62) centered on a central axis (X 60 ) and provided with an inner radial surface (64) which forms an abutment and centering means for each sensor (80) with respect to the central axis (X 60 ). The support member also includes foot parts (70) extending perpendicularly with respect to the inner radial surface (64) and provided with holes (72, 74, 76) adapted for the passage of connection pins (82, 84, 86) of the sensors (80), in order to connect these sensors (80) to a printed circuit board (50).
摘要:
Device for detecting rotation and instrumented bearing fitted with such a device A device for detecting the rotationofa revolving element of the type comprising a multiple-pole magnetic coder ring (1), fitted on the revolving element and a non-revolving sensor assembly (2) sensitive to the magnetic fields, fitted closeto the coder ring, the sensor assembly (2) comprising a flexible plate switch (5) linked by two terminals (8) to connecting wires and concentrator elements (11) positioned between said terminals (8) and the coder ring (1).
摘要:
The invention concerns a system for measuring rotation comprising an annular rotary magnetic encoder (16) bearing a series of encoding elements (23) arranged circumferentially on the encoder in a periodic pattern. The invention is characterized in that it comprises a primary sensing assembly (38) including at least one primary magnetic sensor (38) arranged opposite the encoding elements for detecting the angular position of the encoder with a discrete angular resolution of a fraction of one revolution not more than one period of the encoder and an electronic counter of the number of fractions of revolution performed, and a secondary sensor assembly including secondary magnetic sensors (24a to 24d, 25a to 25d) arranged opposite the encoding elements to determine an absolute position of the encoder between two positions offset by at least one fraction of revolution.