A power supply voltage terminal and a ground terminal having a rectangular cross section are respectively connected to a first terminal hole of a power supply pattern and a second terminal hole of a ground pattern. An inductor is surface-mounted on a substrate, and has a rectangular parallelepiped shape in which an input end connected to a power supply pattern and an output end connected to a power supply relay face each other. A first electrode terminal of a capacitor is connected to the power supply pattern, a second electrode terminal is connected to the ground pattern, and constitutes a filter circuit together with the inductor. A wall surface of an input end of the inductor is arranged parallel to the longitudinal axis direction (x direction) of the first terminal hole. The inductor opposes the first terminal hole so as to include the entire length Wh of the first terminal hole within the width Wt of the input end in the x direction.

A steering column may include a first adjustment drive for adjustments in a length adjustment direction and a second adjustment drive for adjustments in a height adjustment direction. The adjustment drives each have a drive motor. A joint control unit for the drive motors comprises three half bridges arranged in parallel and connected between two voltage potentials. Each half bridge has a high-side switch and a low-side switch connected in series via a connection point. The connection point of the first half bridge is electrically conductively connected to a first connection of a first drive motor. The connection point of a second half bridge is electrically conductively connected to a second connection of the first drive motor and to a first connection of the second drive motor. The connection point of a third half bridge is electrically conductively connected to a second connection of the second drive motor.

An open roof assembly for use in a vehicle roof of a vehicle comprises a moveably arranged closure member for selectively covering or at least partially exposing an opening in the vehicle roof, an electric motor operatively coupled to the closure member through a mechanical drive assembly for moving the closure member, an electric driving unit for providing a supply signal to the electric motor and a control unit operatively coupled to the electric driving unit for controlling operation of the electric motor. The electric driving unit comprises four switching devices in a bridged configuration and the control unit is configured to control a motion of the closure member by controlling operation of the switching devices, and to incur a safety stop during a motion of the closure member by an immediate reversal of a polarity of the supply signal.

An electronic switch module for a power tool is provided including a module body, a trigger moveable relative to the module body, a magnet being moveable relative to the module body with the trigger along a movement axis, and a linear Hall sensor fixed relative to the module body and intersecting the movement axis of the magnet. The linear Hall sensor magnetically detects a linear position of the magnet along the movement axis and outputs a voltage signal based on the detected linear position.

The present disclosure provides a motor drive device. The motor drive device includes a current detection unit, a control unit and a determination unit. The current detection unit detects a current flowing through a motor coil. The control unit executes a slow attenuation mode that attenuates the current after an end of a power supply mode. The determination unit determines whether the current at a second time point while a predetermined time has elapsed from a first time point when the power supply mode is switched to a slow decay mode is below a limit value. When the determination unit determines that the current does not fall below the limit value, the control unit is configured to switch from the slow attenuation mode to a fast attenuation mode at the second time point.

A method for controlling a stepper motor includes calculating a duty cycle of a current provided to the stepper motor and comparing a difference, between the calculated duty cycle and a base duty cycle of current provided to the stepper motor under a base load condition, to a reference duty cycle value. The method also includes adjusting a peak current level of the current provided to the stepper motor responsive to the comparison.

The present disclosure relates to a motor driving apparatus and a method. More specifically, a motor driving apparatus according to the present disclosure includes: an electric motor; an inverter that drives the electric motor using a plurality of high-side switching elements and low-side switching elements; a rotary switch that connects the electric motor and the inverter to each other; and a controller that identifies a switching element in which a malfunction has occurred in a case where a malfunction has occurred in the inverter connected to the electric motor and performs control of the rotary switch such that connection with the identified switching element is cut out, and a switching element not connected to the electric motor is connected.

This application provides an interface circuit of a vehicle-mounted control unit comprising an H-bridge circuit, an input branch, and a pull-up network. An input end of the H-bridge circuit is connected to a controller 240, and an output end of the H-bridge circuit is connected to an interface port IO of the interface circuit. A first end of the input branch is connected to the interface port IO, and a second end of the input branch is connected to the controller.

The disclosure relates to a motor control device and method. According to the disclosure, a motor control device comprises a controller generating a control signal for controlling an operation of an electric motor, an inverter controller generating a switching control signal for controlling an operation of one or more switching elements connected to the electric motor, based on the control signal, and a receiver receiving voltage information about a voltage of the electric motor. The controller determines whether the electric motor has a failure based on the voltage information received in a dead time period generated according to the control signal.

A voltage divider circuit is configured by a resistor having one end connected to a positive electrode of a battery configuring a power source and another end connected to a first terminal that is a motor terminal on one side of a wiper motor, and a FET having one end connected to the first terminal and another end grounded. The voltage divider circuit lowers a voltage of the battery to a test voltage that does not cause the wiper motor to rotate. A microcomputer detects a detected voltage that is a voltage output from the voltage divider circuit to a second terminal that is a motor terminal on the other side of the wiper motor via the first terminal of the wiper motor and the wiper motor, and computes a motor terminal voltage, this being a potential difference between the first terminal and the second terminal, from the detected voltage.