Patents by Inventor Tahar SLAMA
Tahar SLAMA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11845501Abstract: Method for controlling a control motor, including an engine and an engine arranged in parallel, implementing: a distribution step determining a distributed torque, and a distributed torque from a target torque; a step adding a compensation request to the first distributed torque so as to determine a target motor torque; a step adding a compensation request to the distributed torque so as to determine a target motor torque; a production step in which the engine exerts a motor torque depending on the target motor torque; a step in which the engine exerts a motor torque depending on the target motor torque; the controlling method also including a permission step, configured to limit, or respectively authorize, the compensation request of a disturbance, or respectively of a failure, of the engine, and/or the compensation request, for a disturbance, or respectively a failure, of the engine.Type: GrantFiled: December 23, 2021Date of Patent: December 19, 2023Assignee: JTEKT EUROPEInventors: Xavier Palandre, Tahar Slama
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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: 11656137Abstract: A method in which a continuous estimation of the intermediate friction rate is carried out, allowing the integration of the method into a general friction compensation method so as to continuously improve the feel on the steering wheel, particularly for speeds below a determined threshold. Also, a method for friction compensation in an electrical power steering system, characterised in that the compensation method takes into account a continuous estimation of the intermediate friction rate obtained by the estimation method.Type: GrantFiled: October 23, 2018Date of Patent: May 23, 2023Assignee: JTEKT EUROPEInventors: Alain Guilemond, Sébastien Bourdrez, Tahar Slama, Pascal Moulaire, Nicolas Baudouin
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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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Publication number: 20220194463Abstract: Method for controlling a control motor, including an engine and an engine arranged in parallel, implementing: a distribution step determining a distributed torque, and a distributed torque from a target torque; a step adding a compensation request to the first distributed torque so as to determine a target motor torque; a step adding a compensation request to the distributed torque so as to determine a target motor torque; a production step in which the engine exerts a motor torque depending on the target motor torque; a step in which the engine exerts a motor torque depending on the target motor torque; the controlling method also including a permission step, configured to limit, or respectively authorize, the compensation request of a disturbance, or respectively of a failure, of the engine, and/or the compensation request, for a disturbance, or respectively a failure, of the engine.Type: ApplicationFiled: December 23, 2021Publication date: June 23, 2022Applicant: JTEKT EUROPEInventors: Xavier PALANDRE, Tahar SLAMA
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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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Patent number: 11084527Abstract: Method for monitoring the operation of a power steering system including a steering wheel, a servo motor and a monitoring module, characterized in that said method involves a step of determining at least one temporary limit value of a parameter, a step of estimating an additional value which an assistance functionality contributes to a setpoint value of the parameter, and a step of correcting the at least one temporary limit value by the additional value.Type: GrantFiled: December 11, 2018Date of Patent: August 10, 2021Assignee: JTEKT EUROPEInventors: Romain Moretti, Tahar Slama
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Patent number: 10889319Abstract: A method for controlling a power steering device including a steering assist motor and a steering wheel. In the method, a steering wheel torque setpoint is generated, the actual steering wheel torque actually exerted by the driver on the steering wheel is measured, the difference, the so-called “steering wheel torque error”, between the steering wheel torque setpoint and the actual steering wheel torque is determined, then a motor torque setpoint for the steering assist motor is generated from a first filtered proportional component on one hand, obtained by filtering via a phase-lead filter the steering wheel torque error weighted by a first assist gain, and from a second derivative return component on the other hand, obtained by calculating the time derivative of the actual steering wheel torque and weighting the derivative by means of a second derivative gain.Type: GrantFiled: June 17, 2016Date of Patent: January 12, 2021Assignee: JTEKT EUROPEInventors: Pascal Moulaire, Hervé Peltier, Arnaud Thiery, Tahar Slama
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Publication number: 20200370979Abstract: A method in which a continuous estimation of the intermediate friction rate is carried out, allowing the integration of the method into a general friction compensation method so as to continuously improve the feel on the steering wheel, particularly for speeds below a determined threshold. Also, a method for friction compensation in an electrical power steering system, characterised in that the compensation method takes into account a continuous estimation of the intermediate friction rate obtained by the estimation method.Type: ApplicationFiled: October 23, 2018Publication date: November 26, 2020Applicant: JTEKT EUROPEInventors: Alain GUILEMOND, Sébastien BOURDREZ, Tahar SLAMA, Pascal MOULAIRE, Nicolas BAUDOUIN
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Publication number: 20200361529Abstract: Method for monitoring the operation of a power steering system including a steering wheel, a servo motor and a monitoring module, characterized in that said method involves a step of determining at least one temporary limit value of a parameter, a step of estimating an additional value which an assistance functionality contributes to a setpoint value of the parameter, and a step of correcting the at least one temporary limit value by the additional value.Type: ApplicationFiled: December 11, 2018Publication date: November 19, 2020Applicant: JTEKT EUROPEInventors: Romain MORETTI, Tahar SLAMA
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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: 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: 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
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Publication number: 20180134309Abstract: A method for controlling a power steering device including a steering assist motor and a steering wheel. In the method, a steering wheel torque setpoint is generated, the actual steering wheel torque actually exerted by the driver on the steering wheel is measured, the difference, the so-called “steering wheel torque error”, between the steering wheel torque setpoint and the actual steering wheel torque is determined, then a motor torque setpoint for the steering assist motor is generated from a first filtered proportional component on one hand, obtained by filtering via a phase-lead filter the steering wheel torque error weighted by a first assist gain, and from a second derivative return component on the other hand, obtained by calculating the time derivative of the actual steering wheel torque and weighting the derivative by means of a second derivative gain.Type: ApplicationFiled: June 17, 2016Publication date: May 17, 2018Applicant: JTEKT EUROPEInventors: Pascal MOULAIRE, Hervé PELTIER, Arnaud THIERY, Tahar SLAMA