Abstract: An increase in noise can be suppressed. A motor control device includes N inverters configured to control N motors connected via power cables based on PWM signals, respectively, and a phase controller configured to determine phases of N carrier signals to be used for generating PWM signals to be supplied to the N inverters so that a sum of N vectors represented by noise amounts related to the respective N motors becomes zero.

Abstract: According to one embodiment, a sensor includes a base body, a support portion fixed to the base body, and a first member supported by the support portion. A gap is provided between the base body and a part of the first member. The first member includes a supported region, a first movable region, a first structure, a first support structure, a first connection structure, a first connect portion, and a first beam. The support portion is located between the base body and the supported region in a first direction from the base body to the support portion. The first beam extends along a second direction crossing the first direction. A first beam position of the first beam is located between a first movable region position of the first movable region and a support portion position of the support portion in the second direction.

Abstract: According to one embodiment, a sensor includes a base, a first support portion fixed to the substrate, and a first member supported by the first support portion. A gap is provided between the base and the first member. The first beam electrode and the second beam electrode satisfy at least one of a first condition, a second condition, a third condition, a fourth condition, a fifth condition, a sixth condition, a seventh condition, or an eighth condition.

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.

Abstract: A servo system includes multiple servo drivers that are operable in cooperation with each other and are each drivable independently with highest possible control accuracy. The servo system includes a first servo driver that drives a first motor, a second servo driver connected to the first servo driver with a first signal line to drive a second motor, and a host device connected to the first and second servo drivers with a second signal line. The second servo driver switches, in response to a switch command from the host device, between a first mode in which the second servo driver drives the second motor in accordance with a first control command from the first servo driver and a second mode in which the second servo driver drives the second motor in accordance with a second control command from the host device.

Abstract: A technique enables control parameter adjustment with a more accurate estimated inertia ratio for multiple servomotors. An adjustment support apparatus (9) supports adjustment of inertia ratios as control parameters for servo drivers (5, 6) that drive multiple servomotors. The adjustment support apparatus (9) includes an inertia ratio obtainer (91) that obtains inertia ratios estimated by inertia ratio estimators (52, 62) included in the servo drivers (5, 6) and an inertia ratio setting control unit (92) that synchronizes inertia ratio settings and updates between the servo drivers (5, 6).

Abstract: A socket of a connector includes a socket housing, a socket terminal element, and an outer shield element. The socket housing includes a bottom plate, and first and second side wall portions facing each other and provided on an upper surface of the bottom plate. The outer shield element includes a main body portion disposed on an outer surface of the first side wall portion, a contact portion extending from the main body portion to the inner surface of the first side wall portion, and an outer shield terminal portion extending from the main body portion toward the bottom plate. The contact portion is configured to be electrically connected to an outside of the socket housing. The outer shield terminal is electrically connected to the contact portion via the main body portion. This connector suppresses generation of unnecessary radiation and noise, and also suppresses interference between high-frequency signals.

Abstract: A processing apparatus acquires a first rise transition that is a rise transition of the temperature of a winding and a second rise transition that is a rise transition of the temperature detected by a temperature sensor in a state where voltage application for raising the temperature of the winding to a predetermined temperature is performed, determines a predetermined temperature characteristic model by calculating a predetermined parameter on the basis of the second rise transition, and further determines a winding temperature characteristic model by calculating a winding related parameter on the basis of the first rise transition.

Abstract: A semiconductor device according to one embodiment of the present disclosure includes: a first semiconductor chip; a second semiconductor chip stacked on the first semiconductor chip via a spacer; a first terminal group provided around a stacked body in which the first semiconductor chip and the second semiconductor chip are stacked, and coupled to the first semiconductor chip; a second terminal group provided on an outer side of the first terminal group, and coupled to the second semiconductor chip; and a package member that seals the first semiconductor chip, the second semiconductor chip, the first terminal group, and the second terminal group, and in which at least the first terminal group and the second terminal group are exposed on a back face.

Abstract: The processing device includes: a temperature transition acquisition unit that acquires rising transition of the temperature of the winding in a state in which a first voltage is applied in order to raise a temperature of the winding to a first temperature and further acquires falling transition of the temperature of the winding in a state in which a second voltage is applied in order to lower the temperature of the winding to a second temperature that is lower than the first temperature after the temperature of the winding converges to the first temperature; and a decision unit that calculates stator-related parameters on the basis of the falling transition to decide a stator temperature characteristic mode and further calculates winding-related parameters on the basis of the rising transition and a stator temperature characteristic model to decide a winding temperature characteristic model.

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.

Abstract: A socket of a connector includes a socket housing, a socket terminal element, and an outer shield element. The socket housing includes a bottom plate, and first and second side wall portions facing each other and provided on an upper surface of the bottom plate. The outer shield element includes a main body portion disposed on an outer surface of the first side wall portion, a contact portion extending from the main body portion to the inner surface of the first side wall portion, and an outer shield terminal portion extending from the main body portion toward the bottom plate. The contact portion is configured to be electrically connected to an outside of the socket housing. The outer shield terminal is electrically connected to the contact portion via the main body portion. This connector suppresses generation of unnecessary radiation and noise, and also suppresses interference between high-frequency signals.

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.

Abstract: A socket of a connector includes a socket housing, a socket terminal element, and an outer shield element. The socket housing includes a bottom plate, and first and second side wall portions facing each other and provided on an upper surface of the bottom plate. The outer shield element includes a main body portion disposed on an outer surface of the first side wall portion, a contact portion extending from the main body portion to the inner surface of the first side wall portion, and an outer shield terminal portion extending from the main body portion toward the bottom plate. The contact portion is configured to be electrically connected to an outside of the socket housing. The outer shield terminal is electrically connected to the contact portion via the main body portion. This connector suppresses generation of unnecessary radiation and noise, and also suppresses interference between high-frequency signals.

Abstract: A technique enables control parameter adjustment with a more accurate estimated inertia ratio for multiple servomotors. An adjustment support apparatus (9) supports adjustment of inertia ratios as control parameters for servo drivers (5, 6) that drive multiple servomotors. The adjustment support apparatus (9) includes an inertia ratio obtainer (91) that obtains inertia ratios estimated by inertia ratio estimators (52, 62) included in the servo drivers (5, 6) and an inertia ratio setting control unit (92) that synchronizes inertia ratio settings and updates between the servo drivers (5, 6).

Abstract: In order to improve usability during parameter adjustment, this adjustment device performs a simulation in which a set value of a servo parameter received during a slide operation period of a slider bar is reflected in a FFT analysis result of response characteristics of speed control or position control, and the simulation display of the frequency characteristics and phase characteristics is updated on the adjustment screen.

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.

Abstract: In order to improve usability during parameter adjustment, this adjustment device performs a simulation in which a set value of a servo parameter received during a slide operation period of a slider bar is reflected in a FFT analysis result of response characteristics of speed control or position control, and the simulation display of the frequency characteristics and phase characteristics is updated on the adjustment screen.

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.

Abstract: A socket of a connector includes a socket housing, a socket terminal element, and an outer shield element. The socket housing includes a bottom plate, and first and second side wall portions facing each other and provided on an upper surface of the bottom plate. The outer shield element includes a main body portion disposed on an outer surface of the first side wall portion, a contact portion extending from the main body portion to the inner surface of the first side wall portion, and an outer shield terminal portion extending from the main body portion toward the bottom plate. The contact portion is configured to be electrically connected to an outside of the socket housing. The outer shield terminal is electrically connected to the contact portion via the main body portion. This connector suppresses generation of unnecessary radiation and noise, and also suppresses interference between high-frequency signals.