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    Parameter adjustment method for adjusting control parameters for device that performs servo control
    2.
    发明授权
    Parameter adjustment method for adjusting control parameters for device that performs servo control 有权

    公开(公告)号：US11809148B2

    公开(公告)日：2023-11-07

    申请号：US17614670

    申请日：2020-03-02

    Applicant: OMRON Corporation

    Inventor： Maki Nishimura ,  Mamoru Egi ,  Yasushi Ono ,  Kenji Nakajima ,  Fumiaki Sato

    IPC: G05B13/04 ,  G05B6/02

    CPC classification number: G05B13/042 ,  G05B6/02

    Abstract: A feedback gain and a speed feed-forward gain are adjusted. A method for adjusting control parameters for a control device that performs servo control on a control target includes calculating an upper limit of a feedback gain of a feedback signal within a range in which a predetermined index for the feedback gain satisfies a predetermined target value with a speed feed-forward gain for speed feed-forward control set at a predetermined reference value, setting the feedback gain at an adjustment initial value lower than the upper limit, setting the speed feed-forward gain at the highest value within a settable range, and increasing the feedback gain from the adjustment initial value within a range in which the feedback gain does not exceed the upper limit with at least the speed feed-forward gain set at a predetermined increased value.

    Motor control device, motor control system, runaway state detection method, and non-transitory computer readable storage medium
    3.
    发明授权
    Motor control device, motor control system, runaway state detection method, and non-transitory computer readable storage medium 有权

    公开(公告)号：US11025190B2

    公开(公告)日：2021-06-01

    申请号：US16485781

    申请日：2018-01-29

    Applicant: OMRON Corporation

    Inventor： Yasushi Ono

    IPC: H02K17/32 ,  H02K23/68 ,  H02K27/30 ,  H02P29/028 ,  H02P21/18 ,  H02P21/20 ,  H02P6/10

    Abstract: Provided is a motor control device generating a torque command such that a detection speed of a motor matches a command speed, and controlling the motor. The motor control device includes: a torque command differential component taking a differential of the torque command and obtaining a torque command differential value; a motor actual speed second order differential component taking a second order differential of the detection speed of the motor and obtaining a motor jerk; and a runaway detection component determining that the motor is in a runaway state in a case where an abnormal state in which a sign of the motor jerk and a sign of the torque command differential value do not match continues for a predetermined time or more. Accordingly, the runaway of the motor can be detected in a short time while the erroneous detection can be suppressed.

    Evaluation device, evaluation method and control device
    5.
    发明授权
    Evaluation device, evaluation method and control device 有权

    公开(公告)号：US11121659B2

    公开(公告)日：2021-09-14

    申请号：US16485783

    申请日：2018-01-30

    Applicant: OMRON Corporation

    Inventor： Yasushi Ono ,  Mamoru Egi

    IPC: H03K5/00 ,  H02P21/22 ,  H02P21/09 ,  G06F1/3203

    Abstract: Provided is an evaluation device that determines the necessity of a notch filter inserted in a control system that controls an electric motor by closed loop control. The evaluation device includes: a characteristic acquisition parts for changing a parameter associated with a characteristic of the notch filter from a first value, which is a prescribed value, to a second value, and acquiring a change in a frequency response characteristic of the electric motor when the notch filter is applied; and a determination parts for determining the necessity of the notch filter based on the change in the frequency response characteristic that has been acquired.

    Parameter setting assistance device, parameter setting assistance method
    6.
    发明授权
    Parameter setting assistance device, parameter setting assistance method 有权

    公开(公告)号：US12099338B2

    公开(公告)日：2024-09-24

    申请号：US17434936

    申请日：2020-03-10

    Applicant: OMRON Corporation

    Inventor： Takanobu Matsuura ,  Mamoru Egi ,  Yasushi Ono

    IPC: G05B19/042

    CPC classification number: G05B19/0426 ,  G05B19/0423

    Abstract: A technique facilitates presetting of parameters for controlling a control target including a load device that has machine parameters such as inertia changeable in accordance with its posture or state. A parameter setting support apparatus (10) for supporting a control apparatus (30) in control parameter setting includes a first specifier (14) that specifies evaluation index values indicating control stability or control performance of the control apparatus (30) based on frequency response characteristics of a control target (40) in postures of the load device (42) having maximum inertia and minimum inertia, and a second specifier (14) that specifies a combined evaluation index value representing an evaluation index value in the posture of the load device (42) in operation based on the evaluation index values specified, by the first specifier (14), in the postures of the load device (42) having maximum inertia and minimum inertia.

    Motor control device
    9.
    发明授权
    Motor control device 有权

    公开(公告)号：US10720868B2

    公开(公告)日：2020-07-21

    申请号：US16354212

    申请日：2019-03-15

    Applicant: OMRON Corporation

    Inventor： Masahito Tanaka ,  Yasushi Ono

    IPC: H02P21/00 ,  H02P21/16 ,  H02P21/18 ,  H02P21/22

    Abstract: Provided is a motor control device having a function of estimating inductance and resistance of a motor for which inductance and resistance thereof are unknown. The motor control device includes a power converter, a current controller which calculates the voltage command input to the power converter using a detection result of a current value of a drive current of the motor, a current command generation unit which specifies a frequency for motor constant calculation on the basis of an electrical time constant of the motor, generates a sine wave of the frequency for motor constant calculation, and inputs the sine wave to the current controller as the current command, and a motor constant calculation unit which obtains a frequency response while the sine wave is input to the current controller as the current command, and calculates resistance and inductance of the motor from the obtained frequency response.

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