Patents by Inventor Shigeru Kamio

Shigeru Kamio 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).

  • Control apparatus for shift range changeover device
    Patent number: 8311716
    Abstract: A control apparatus for a shift range changeover device determines temporary abnormality, when a detection output of a rotation position of a motor continues to be abnormal for a first abnormality determination period. The control apparatus further determines persistent abnormality and performs predetermined failsafe processing, when the detection output further continues to be abnormal for a second abnormality period following the first abnormality period. If the temporary abnormality is determined within a feedback control permission period, motor feedback control is prohibited to control the shift range to the neutral range. If the temporary abnormality is determined after the feedback control permission period, the same control operation as before the temporary abnormality is performed.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: November 13, 2012
    Assignee: Denso Corporation
    Inventors: Keiji Hoshino, Shigeru Kamio
  • Motor control apparatus
    Patent number: 8134322
    Abstract: In an automatic transmission position control by a motor, it is determined whether the present instant belongs to a starting period, that is, the present instant is immediately after resetting of a control unit or application of power to it. If it is the starting period, an actual shift position that is detected from an output of an output shaft sensor for detecting a rotation position of a motor is set as an instructed shift position. With this measure, even if the control unit is reset for a certain reason while the vehicle is running, the instructed shift position is not changed in association with the resetting. This prevents trouble that the shift position is switched contrary to the intention of the driver, whereby the reliability of a position switching control can be increased.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: March 13, 2012
    Assignee: Denso Corporation
    Inventors: Yasuhiro Nakai, Shigeru Kamio
  • Control apparatus and method for shift-position changing mechanism
    Patent number: 8068965
    Abstract: A control apparatus for a shift-position changing mechanism that changes the shift positions of an automatic transmission mounted in a vehicle using a rotational force of an actuator based on a signal corresponding to the state of an operation member, including: a mechanism that generates a rotational force for moving the actuator toward a rotation stop positional-range corresponding to the shift position, based on a rotation stop position of the actuator; a detection unit that detects a rotation amount of the actuator; a control unit that controls the actuator based on the signal and the detected rotation amount; and a learning unit that learns the rotation stop positional-range corresponding to the shift position, based on an amount by which the actuator has been rotated since a control over the actuator executed by the control unit is stopped.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: November 29, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideki Kubonoya, Masato Kaigawa, Keiji Hoshino, Shigeru Kamio
  • Shift switching device and shift switching method
    Patent number: 8035934
    Abstract: A shift-by-wire shift switching device and shift switching method that switch a shift range of an automatic transmission using an electric motor. The shift switching device includes a controller that determines whether a fault has occurred in a current supply line of each phase of the electric motor on a phase-by-phase basis, executes an open-loop control of the electric motor using only the phases in which it has been determined that a fault has not occurred, and determines whether a fault has occurred in the current supply line by detecting an activation state of the electric motor when the open-loop control of the electric motor is executed. Therefore, it is possible to determine whether a fault in the motor is a short-circuit fault or a break fault, without addition of a part such as a short-circuit detection sensor.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: October 11, 2011
    Assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation
    Inventors: Yuji Inoue, Eiji Isobe, Shigeru Kamio
  • Motor control apparatus
    Patent number: 8013563
    Abstract: In an automatic transmission position control by a motor, it is determined whether the present instant belongs to a starting period, that is, the present instant is immediately after resetting of a control unit or application of power to it. If it is the starting period, an actual shift position that is detected from an output of an output shaft sensor for detecting a rotation position of a motor is set as an instructed shift position. With this measure, even if the control unit is reset for a certain reason while the vehicle is running, the instructed shift position is not changed in association with the resetting. This prevents trouble that the shift position is switched contrary to the intention of the driver, whereby the reliability of a position switching control can be increased.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: September 6, 2011
    Assignee: Denso Corporation
    Inventors: Yasuhiro Nakai, Shigeru Kamio
  • MOTOR CONTROLLING DEVICE
    Publication number: 20110175563
    Abstract: A motor controlling device includes an encoder to output pulse signals with a predetermined angle interval as a rotor of a motor is rotated. An energized phase of the motor is sequentially switched by detecting a rotation position of the rotor based on a value of counting the signals. An initial drive controlling portion executes an initial drive to switch the energized phase with a predetermined pattern after the device is activated so as to learn a relationship among the count value, the rotation position and the energized phase. An initial drive prohibiting portion prohibits the execution of the initial drive until a predetermined time is elapsed after the initial drive is finished.
    Type: Application
    Filed: January 10, 2011
    Publication date: July 21, 2011
    Applicant: DENSO CORPORATION
    Inventors: Jun YAMADA, Shigeru Kamio, Kiyoshi Kimura
  • Motor control apparatus
    Patent number: 7960933
    Abstract: A P-range side delimiting position of a movable range of a range change mechanism is learned by rotating a motor to a corresponding rotational position, which corresponds to the P-range side delimiting position. A climb correction amount is set for a learning value of the P-range side delimiting position to correct the learning value of the P-range side delimiting position in view of presence of a relatively small angle of rotation of the motor beyond the corresponding rotational position, which corresponds to the P-range side delimiting position. The climb correction amount is set according to motor temperature information, which is one of a temperature of the motor and a temperature that relates to the temperature of the motor.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: June 14, 2011
    Assignee: Denso Corporation
    Inventors: Eiji Isobe, Shigeru Kamio
  • Control apparatus for vehicle
    Patent number: 7949459
    Abstract: A target throttle opening degree computing device of a control apparatus computes a target throttle opening degree of a throttle valve and includes a phase lead compensator. A filter filters the target throttle opening degree to provide an ultimate target throttle opening degree, which is used to drive a drive motor to adjust an opening degree of the throttle valve.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: May 24, 2011
    Assignees: Denso Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Hisayo Yoshikawa, Shigeru Kamio, Masahiro Ito, Kenji Kasashima
  • Shift range change system
    Patent number: 7946957
    Abstract: A motor needs to provide a first torque at the time of releasing a shift range from a parking range and needs to provide a second torque smaller than the first torque at the time of placing the shift range into the parking range. Also, the motor needs to provide a third torque smaller than the second torque at the time of changing the shift range from one non-parking range to another non-parking range and needs to provide a fourth torque smaller than the third torque at the time of executing the parking range wall abutment learning. When the parking range wall abutment learning is executed from the parking range, a motor control apparatus controls the torque to the third or fourth torque. When the parking range wall abutment learning is executed from any non-parking range, the motor control apparatus controls the torque to the first or second torque.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: May 24, 2011
    Assignee: Denso Corporation
    Inventors: Kiyoshi Kimura, Shigeru Kamio
  • Motor control apparatus
    Publication number: 20110068730
    Abstract: In an automatic transmission position control by a motor, it is determined whether the present instant belongs to a starting period, that is, the present instant is immediately after resetting of a control unit or application of power to it. If it is the starting period, an actual shift position that is detected from an output of an output shaft sensor for detecting a rotation position of a motor is set as an instructed shift position. With this measure, even if the control unit is reset for a certain reason while the vehicle is running, the instructed shift position is not changed in association with the resetting. This prevents trouble that the shift position is switched contrary to the intention of the driver, whereby the reliability of a position switching control can be increased.
    Type: Application
    Filed: November 29, 2010
    Publication date: March 24, 2011
    Applicant: DENSO CORPORATION
    Inventors: Yasuhiro Nakai, Shigeru Kamio, Kenichi Fujiki
  • Internal combustion engine knock determination device
    Patent number: 7874200
    Abstract: An engine ECU executes a program including the steps of: detecting a vibration corresponding to a first radial resonance mode by using a band-pass filter, from vibrations sensed by an in-cylinder pressure sensor provided at an upper central portion of the cylinder; calculating knock intensity N based on a result of comparison between the detected waveform and a knock waveform model prepared in advance as a vibration waveform when knocking occurs; determining that knocking occurred when the knock intensity N is larger than a predetermined reference value; and determining that knocking has not occurred when the knock intensity N is not larger than the predetermined reference value.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: January 25, 2011
    Assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation, Nippon Soken, Inc.
    Inventors: Shuhei Oe, Kiyoshi Iwade, Nobuyuki Murate, Rihito Kaneko, Yuichi Takemura, Shigeru Kamio
  • Control apparatus for shift range changeover device
    Patent number: 7713168
    Abstract: A control apparatus for a range changeover device checks whether an actual range agrees with a target range. If the actual range differs from the target range, the control apparatus performs vehicle driving force restriction control irrespective of a presence/absence of abnormality in a range changeover operation. The control apparatus may restrict an engine output power by closing a throttle valve of the engine to around an idle position, thereby restricting the vehicle driving force.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: May 11, 2010
    Assignees: Denso Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Masaaki Shinojima, Shigeru Kamio, Yoshinobu Nozaki, Atsushi Kamada
  • Internal combustion engine knock determination device
    Patent number: 7677083
    Abstract: An engine ECU executes a program including the steps of: setting a knock waveform model corresponding to engine speed sensed by a crank position sensor; calculating knock intensity N based on the result of comparison between a detected waveform and the set knock waveform model; when the knock intensity N is larger than a predetermined reference value, determining that knocking has occurred; and when the knock intensity N is not larger than the predetermined reference value, determining that knocking has not occurred.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: March 16, 2010
    Assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation, Nippon Soken, Inc.
    Inventors: Shuhei Oe, Kiyoshi Iwade, Kouji Ohara, Rihito Kaneko, Kenji Kasashima, Yuichi Takemura, Shigeru Kamio
  • Knocking state determination device
    Patent number: 7669582
    Abstract: An engine ECU executes a program including the steps of: calculating a correlation coefficient K based on the result of comparing a vibration waveform of an engine and a knock waveform model stored previously; calculating a magnitude value LOG(V) from the magnitude V detected based on a signal transmitted from a knock sensor; creating frequency distribution of magnitude values LOG(V) by using magnitude values LOG(V) in an ignition cycle in which the correlation coefficient K larger than a threshold K(1) is calculated; and counting knock proportion KC by using the created frequency distribution. If the vibration waveform includes a waveform of vibration of noise components, the correlation coefficient K is calculated to be smaller comparing with a case of not including it.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: March 2, 2010
    Assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation
    Inventors: Rihito Kaneko, Kenji Kasashima, Masatomo Yoshihara, Koji Aso, Kenji Senda, Shigeru Kamio, Yuichi Takemura
  • Control Apparatus for Vehicle
    Publication number: 20100049419
    Abstract: A target throttle opening degree computing device of a control apparatus computes a target throttle opening degree of a throttle valve and includes a phase lead compensator. A filter filters the target throttle opening degree to provide an ultimate target throttle opening degree, which is used to drive a drive motor to adjust an opening degree of the throttle valve.
    Type: Application
    Filed: January 18, 2007
    Publication date: February 25, 2010
    Applicants: Denso Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Hisayo Yoshikawa, Shigeru Kamio, Masahiro Ito, Kenji Kasashima
  • Motor control apparatus
    Patent number: 7667427
    Abstract: Presence/absence of a failure in a feedback control system of a motor is monitored. When a failure is detected in the feedback control system, the motor is driven by switching to an open-loop control. During the open-loop control, the motor is rotated by sequentially switching the motor current supply phase without feeding back encoder count information. The position count is incremented or decremented every time the current supply phase is switched. When the position count has reached a target count, it is determined that the rotor has reached a target position, whereupon the open-loop control is finished.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: February 23, 2010
    Assignees: Denso Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Shigeru Kamio, Kenichi Fujiki, Sumiko Amamiya, Yasushi Kobiki, Yuji Inoue
  • Controlling device for range switch mechanism
    Patent number: 7629760
    Abstract: A controlling device includes a range switch mechanism, range switch operating means, operation frequency monitoring means, and heat generation limit controlling means. The range switch mechanism is adapted to change a shift range using a motor. Through the range switch operating means, an occupant inputs a required shift range. The motor is controlled in accordance with the required shift range such that the shift range is changed into the required shift range. The operation frequency monitoring means monitors an operation frequency of the range switch operating means. The heat generation limit controlling means switches a control of the motor to a heat generation limit control when the operation frequency of the range switch operating means exceeds a predetermined frequency.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: December 8, 2009
    Assignees: Denso Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Eiji Isobe, Shigeru Kamio, Takeshi Miyagawa, Hideto Watanabe, Yoshimitsu Yokouchi, Koki Ueno, Takahiko Tsutsumi
  • CONTROL APPARATUS FOR SHIFT RANGE CHANGEOVER DEVICE
    Publication number: 20090292431
    Abstract: A control apparatus for a shift range changeover device determines temporary abnormality, when a detection output of a rotation position of a motor continues to be abnormal for a first abnormality determination period. The control apparatus further determines persistent abnormality and performs predetermined failsafe processing, when the detection output further continues to be abnormal for a second abnormality period following the first abnormality period. If the temporary abnormality is determined within a feedback control permission period, motor feedback control is prohibited to control the shift range to the neutral range. If the temporary abnormality is determined after the feedback control permission period, the same control operation as before the temporary abnormality is performed.
    Type: Application
    Filed: May 18, 2009
    Publication date: November 26, 2009
    Applicant: DENSO CORPORATION
    Inventors: Keiji HOSHINO, Shigeru KAMIO
  • Knocking determination device for internal combustion engine
    Patent number: 7621172
    Abstract: An engine ECU 200 includes a bandpass filter (1), a bandpass filter (2), and a bandpass filter (3). The bandpass filter (1) extracts only vibrations at a first frequency band A from the vibrations detected by a knock sensor. The bandpass filter (2) extracts only vibrations at a second frequency band B from the vibrations detected by the knock sensor. The bandpass filter (3) extracts only vibrations at a third frequency band C from the vibrations detected by the knock sensor. The first to third frequency bands A-C are identical in bandwidth. The engine ECU calculates a peak value in magnitude of vibrations in a synthesized waveform of these frequency bands, and determines whether knocking occurred or not based on the peak value.
    Type: Grant
    Filed: June 21, 2006
    Date of Patent: November 24, 2009
    Assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation
    Inventors: Masatomo Yoshihara, Kenji Kasashima, Rihito Kaneko, Koji Aso, Kenji Senda, Shigeru Kamio, Yuichi Takemura
  • Motor control apparatus
    Patent number: 7609012
    Abstract: In an automatic transmission position control by a motor, it is determined whether the present instant belongs to a starting period, that is, the present instant is immediately after resetting of a control unit or application of power to it. If it is the starting period, an actual shift position that is detected from an output of an output shaft sensor for detecting a rotation position of a motor is set as an instructed shift position. With this measure, even if the control unit is reset for a certain reason while the vehicle is running, the instructed shift position is not changed in association with the resetting. This prevents trouble that the shift position is switched contrary to the intention of the driver, whereby the reliability of a position switching control can be increased.
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: October 27, 2009
    Assignees: DENSO Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Shigeru Kamio, Kenichi Fujiki, Sumiko Amamiya, Keijiro Ohshima, Yasushi Kobiki, Yuji Inoue