公开(公告)号：US20230114605A1

公开(公告)日：2023-04-13

申请号：US17913245

申请日：2021-03-10

Applicant: Robert Bosch GmbH

Inventor： Adrian Kussmann ,  Christoph Ossmann ,  Frank Schatz ,  Michael Zegowitz ,  Sven Schickle

IPC: G01L3/10 ,  B62J45/411

Abstract: The invention relates to a system for torque measurement, in particular at a drive of an e-bike, including at least one shaft which is rotatable about an axis, is magnetized in at least one axial partial section, and onto which a torque to be measured can be applied, at least one TMR sensor, which is situated outside the shaft and is designed for at least two-dimensionally, in particular three-dimensionally, measuring a magnetic field and which is arranged in relation to the at least one partial section in such a way that, when the shaft rotates about the axis, the at least one sensor measures a change of the magnetic field due to the magnetostrictive effect in the magnetized partial section when the torque acts on the shaft, and an evaluation unit, which is connected to the at least one TMR sensor and is designed for determining a torque acting on the shaft based on the measured values of the magnetic field.

公开(公告)号：US20240278873A1

公开(公告)日：2024-08-22

申请号：US18431385

申请日：2024-02-02

Applicant: Robert Bosch GmbH

Inventor： Joseph Reck ,  Daniel Baumgaertner ,  Merlin Martin Manewald ,  Michael Zegowitz

IPC: B62M6/50

CPC classification number: B62M6/50

Abstract: A control device of a drive of an electric bicycle is disclosed. The control device is designed to (i) receive and/or retrieve a rider's input torque applied by a rider of the electric bicycle, (ii) determine an output torque based on the rider's input torque in a first value range of the rider's input torque according to a first rule, in a second value range of the rider's input torque according to a second rule and in a third value range of the rider's input torque according to a third rule, (iii) determine a supporting torque based on the output torque, and (iv) control the drive in accordance with the supporting torque. The second value range directly adjoins the first value range and the third value range. The first rule and the second rule and the third rule are different from one another. And the second rule is a continuous function with the rider's input torque as input parameter.

公开(公告)号：US20230266185A1

公开(公告)日：2023-08-24

申请号：US18041000

申请日：2021-10-25

Applicant: Robert Bosch GmbH

Inventor： Andreas Breitfeld ,  Christoph Ossmann ,  Frank Schatz ,  Michael Zegowitz ,  Sven Schickle

IPC: G01L3/10 ,  B62J45/411 ,  B62J45/421 ,  B62M6/50

CPC classification number: G01L3/102 ,  B62J45/411 ,  B62J45/421 ,  B62M6/50

Abstract: A magnetoelastic torque sensor having an evaluation unit and at least three magnetic field sensors. The evaluation unit acquires at least one measurement signal of a first magnetic field sensor, at least one measurement signal of a second magnetic field sensor and at least one third measurement signal of a third magnetic field sensor of the magnetoelastic torque sensor, and to determine a torque exerted on the shaft using the at least one measurement signal of the first magnetic field sensor, the at least one measurement signal of the second magnetic field sensor, the at least one measurement signal of the fourth magnetic field sensor, and a ratio of a distance between the second magnetic field sensor and the third magnetic field sensor in an axial direction to a distance between the first magnetic field sensor and the second magnetic field sensor in the axial direction.

公开(公告)号：US20230053529A1

公开(公告)日：2023-02-23

申请号：US17886510

申请日：2022-08-12

Applicant: Robert Bosch GmbH

Inventor： Michael Zegowitz ,  Christoph Ossmann ,  Frank Schatz

IPC: B62M6/50 ,  B62M3/00 ,  B62M6/55

Abstract: A crank spindle set-up for a vehicle. The set-up includes a crank spindle for receiving a force/torque from pedaling using crank arms attached to ends of the crank spindle; an output shaft for receiving a force and/or a torque from the crank spindle; a mechanical coupling having a tap between the ends of the crank spindle, for transmitting force/torque from the crank spindle to the output shaft; a first magnetic region on/in the output shaft for generating and outputting a first magnetic field that is a function of the state of mechanical stress of the output shaft; a second magnetic region on/in the crank spindle at an axial distance from the tap, for generating and outputting a second magnetic field that is a function of the state of mechanical stress of the crank spindle; and a sensor set-up for detecting a magnetic field outputted by the crank spindle set-up.