Hitachi Astemo Ltd.

Hitachi Automotive Systems, Ltd.

Masaki Itabashi

Kazuya Yamano

Tadashi Suganuma

Makoto Kimura

Mitsuo Sasaki

Masaki Kashima

Yoshitaka Sugiyama

Yawara Kato

Hiroyoshi Gomi

Kazutoshi Tanabe

Toshiaki Meguro

Shota Fujiwara

According to one aspect of the present invention, a control apparatus for an in-vehicle apparatus includes a first sensor and a second sensor configured to output sensor data, and a first microprocessor and a second microprocessor. A second sensor data request signal generation portion of the second microprocessor is configured to generate a second sensor data request signal. The first microprocessor includes a first sensor data request signal generation portion, a first data comparison portion, a first abnormality determination portion, and a first instruction signal generation portion. The first sensor data request signal generation portion is configured to generate a first sensor data request signal. The first data comparison portion is configured to compare first comparison data selected from a plurality of an first sensor data and second comparison data selected from a plurality of an second sensor data. The first abnormality determination portion is configured to determine whether an abnormality has occurred in an sensor portion based on a result of the comparison by the first data comparison portion.

Control apparatus for in-vehicle apparatus

A motor actuator of the present invention includes, between a battery and an inverter, a first solid state relay and a second solid state relay in which directions of parasitic diodes are opposite to each other. When supply of power from the battery to the inverter is to be interrupted, the first solid state relay is brought into an OFF state or all of a plurality of field effect transistors are brought into the OFF state, and then the second solid state relay is brought into the OFF state.

Motor actuator for on-vehicle equipment

A control device for a vehicle-mounted apparatus, the control device includes: a second CPU state judging section provided to the first CPU, and configured to judge a state of the second CPU based on a state of the inter-CPU communication and a voltage value of the electric power supplied from the first electric power supply section, or the second reset signal; and a first CPU state judging section provided to the second CPU, and configured to judge a state of the first CPU based on the state of the inter-CPU communication and a voltage value of the electric power supplied from the second electric power supply section, or the first reset signal.

Control device for vehicle-mounted apparatus

A motor system includes first and second solid-state relays disposed between an inverter configured to control energization to a first coil set of a motor and an in-vehicle battery for supplying power to the inverter, and connected in series in this order in a direction from the inverter to the battery. The first solid-state relay has a first diode of which a forward direction is from the battery to the inverter. The second solid-state relay has a second diode of which a forward direction is from the inverter to the battery. Motor relays, each having a third diode of which a forward direction is from the neutral point to the inverter, are connected to the phase coils of the first coil set. When power supply from the battery to the inverter is interrupted, the first solid-state relay is turned off after the motor relays are turned off.

Motor system

Provided is a control apparatus for a power steering apparatus, and a power steering apparatus using it that can reduce electromagnetic noise with the aid of a spread spectrum, thereby realizing stabilized motor control. The control apparatus for the power steering apparatus includes a PWM carrier period setting portion configured to set a natural number of PWM carrier periods within one period of a control period and also changeably set a length of the PWM carrier period, a motor current detection execution portion configured to detect a motor current during the control period, a motor rotational angle detection execution portion configured to detect a motor rotational angle during the control period, and an execution timing setting portion configured to set a timing at which the motor current is detected by the motor current detection execution portion or a timing at which the motor rotational angle is detected by the motor rotational angle detection execution portion, based on the control period set by the control period setting portion.

Growing community of inventors

Hanno, Japan

Masaki Itabashi