Patents Assigned to JTEKT EUROPE S.A.S.
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Publication number: 20230159092Abstract: An ECU controls a motor including a first coil group and a second coil group. The ECU calculates a first torque command value and a second torque command value. The ECU uses a first differential torque, which is the difference between a first theoretical output torque and a first predictive output torque, to correct the second torque command value for the second coil group. The ECU uses a second differential torque, which is the difference between a second theoretical output torque and a second predictive output torque, to correct the first torque command value for the first coil group. The ECU uses a corrected first torque command value to control power feeding to the first coil group and uses a corrected second torque command value to control power feeding to the second coil group.Type: ApplicationFiled: April 27, 2020Publication date: May 25, 2023Applicants: JTEKT CORPORATION, JTEKT EUROPE S.A.S.Inventors: Yuji FUJITA, Hiroshi KAWAMURA, Tahar SLAMA, Baptiste HANSER, Laurent JANEL
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Patent number: 11572097Abstract: A steering controller includes processing circuitry configured to execute a first operation process that, when an angle command value is not input from outside of the processing circuitry, calculates a first torque command value corresponding to a steering-side operation amount and operating a drive circuit of an electric motor to adjust torque of the electric motor to the first torque command value. The processing circuitry is further configured to execute a second operation process that, when the angle command value is input from the outside of the processing circuitry, calculates a second torque command value corresponding to at least an angle-side operation amount of the steering-side operation amount and the angle-side operation amount and operating the drive circuit of the electric motor to adjust the torque of the electric motor to the second torque command value.Type: GrantFiled: January 7, 2020Date of Patent: February 7, 2023Assignees: JTEKT CORPORATION, JTEKT EUROPE S.A.S.Inventors: Terutaka Tamaizumi, Tahar Slama, Pascal Moulaire, Pierre Larminy
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Patent number: 11414125Abstract: A steering controller includes processing circuitry. The processing circuitry is configured to execute an operation process for calculating a torque command value corresponding to a sum of an amount by which the steering-side operation amount is converted into the torque required for the electric motor and an amount by which the steerable wheel-side operation amount is converted into the torque required for the electric motor and operate a drive circuit of the electric motor to adjust the torque of the electric motor to the torque command value.Type: GrantFiled: November 27, 2019Date of Patent: August 16, 2022Assignees: JTEKT CORPORATION, JTEKT EUROPE S.A.S.Inventors: Terutaka Tamaizumi, Tahar Slama, Pascal Moulaire, Pierre Larminy
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Patent number: 11318987Abstract: A steering controller includes processing circuitry configured to execute a torque control process that calculates a steering-side operation amount, an angle feedback control process that calculates an angle-side operation amount, and an operation process that operates a drive circuit of an electric motor to adjust torque of the electric motor to a torque command value. The processing circuitry is further configured to execute a switch process that switches, when determining that a controllability of the electric motor is less than or equal to a predetermined efficiency, the torque command value from a value based on the angle-side operation amount to a value based on the steering-side operation amount instead of the angle-side operation amount.Type: GrantFiled: January 7, 2020Date of Patent: May 3, 2022Assignees: JTEKT CORPORATION, JTEKT EUROPE S.A.S.Inventors: Terutaka Tamaizumi, Tahar Slama, Pascal Moulaire, Pierre Larminy
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Patent number: 11251732Abstract: A motor control device includes processing circuitry configured to calculate a current command value corresponding to torque that should be generated by a motor, divide the calculated current command value into individual current command values for coil groups, control power feeding to the coil groups independently for each of the coil groups based on a corresponding one of the individual current command values, set, for each one of the coil groups, an upper limit value of a corresponding one of the individual current command values and, when the individual current command value for any one of the coil groups is limited to a value that is smaller than a corresponding one of the upper limit values, supplement an amount limited in the individual current command value by increasing the individual current command value for at least a remaining one of the coil groups.Type: GrantFiled: October 25, 2019Date of Patent: February 15, 2022Assignees: JTEKT CORPORATION, JTEKT EUROPE S.A.S.Inventors: Hiroshi Kawamura, Yuji Fujita, Xavier Palandre, Tahar Slama
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Publication number: 20200223477Abstract: A steering controller includes processing circuitry configured to execute a first operation process that, when an angle command value is not input from outside of the processing circuitry, calculates a first torque command value corresponding to a steering-side operation amount and operating a drive circuit of an electric motor to adjust torque of the electric motor to the first torque command value. The processing circuitry is further configured to execute a second operation process that, when the angle command value is input from the outside of the processing circuitry, calculates a second torque command value corresponding to at least an angle-side operation amount of the steering-side operation amount and the angle-side operation amount and operating the drive circuit of the electric motor to adjust the torque of the electric motor to the second torque command value.Type: ApplicationFiled: January 7, 2020Publication date: July 16, 2020Applicants: JTEKT CORPORATION, JTEKT EUROPE S.A.S.Inventors: Terutaka TAMAIZUMI, Tahar SLAMA, Pascal MOULAIRE, Pierre LARMINY
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Publication number: 20200223475Abstract: A steering controller includes processing circuitry configured to execute a torque control process that calculates a steering-side operation amount, an angle feedback control process that calculates an angle-side operation amount, and an operation process that operates a drive circuit of an electric motor to adjust torque of the electric motor to a torque command value. The processing circuitry is further configured to execute a switch process that switches, when determining that a controllability of the electric motor is less than or equal to a predetermined efficiency, the torque command value from a value based on the angle-side operation amount to a value based on the steering-side operation amount instead of the angle-side operation amount.Type: ApplicationFiled: January 7, 2020Publication date: July 16, 2020Applicants: JTEKT CORPORATION, JTEKT EUROPE S.A.S.Inventors: Terutaka TAMAIZUMI, Tahar SLAMA, Pascal MOULAIRE, Pierre LARMINY
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Publication number: 20200172156Abstract: A steering controller includes processing circuitry. The processing circuitry is configured to execute an operation process for calculating a torque command value corresponding to a sum of an amount by which the steering-side operation amount is converted into the torque required for the electric motor and an amount by which the steerable wheel-side operation amount is converted into the torque required for the electric motor and operate a drive circuit of the electric motor to adjust the torque of the electric motor to the torque command value.Type: ApplicationFiled: November 27, 2019Publication date: June 4, 2020Applicants: JTEKT CORPORATION, JTEKT EUROPE S.A.S.Inventors: Terutaka TAMAIZUMI, Tahar SLAMA, Pascal MOULAIRE, Pierre LARMINY
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Publication number: 20200136543Abstract: A motor control device includes processing circuitry configured to calculate a current command value corresponding to torque that should be generated by a motor, divide the calculated current command value into individual current command values for coil groups, control power feeding to the coil groups independently for each of the coil groups based on a corresponding one of the individual current command values, set, for each one of the coil groups, an upper limit value of a corresponding one of the individual current command values and, when the individual current command value for any one of the coil groups is limited to a value that is smaller than a corresponding one of the upper limit values, supplement an amount limited in the individual current command value by increasing the individual current command value for at least a remaining one of the coil groups.Type: ApplicationFiled: October 25, 2019Publication date: April 30, 2020Applicants: JTEKT CORPORATION, JTEKT EUROPE S.A.S.Inventors: Hiroshi KAWAMURA, Yuji FUJITA, Xavier PALANDRE, Tahar SLAMA