Mitsubishi Electric Corporation

Mitsubishi Electronic Corporation

Jiro Okada

Yoshihiko Kimpara

Akira Furukawa

Isao Kezobo

Akihiko Mori

Taizo Toda

Masaya Endo

Masahiro Iezawa

Masaki Matsushita

Shunsuke Nakajima

Susumu Zeniya

Eiji Iwami

Sadaaki Kamei

Hiroyuki Kishioka

Yusuke Fujiki

Akio Numakura

Provided is an autonomous driving assistance system for vehicles that has redundancy without posing any problem in diversity. The autonomous driving assistance system includes: a sensor configured to acquire surroundings information; a downstream device including an actuator configured to control a vehicle; and a driving assistance device configured to calculate a control amount for the downstream device on the basis of the surroundings information. The downstream device further includes a diagnosis unit configured to: perform comparison between at least two control amounts that include the control amount calculated in the driving assistance device and a control amount calculated in the downstream device on the basis of the surroundings information; and determine, if the control amounts are equal to each other, that the control amounts are normal, and determine, if the control amounts are different from each other, that the control amounts are abnormal.

Autonomous driving assistance system and operation method therefor

A control unit for driving a motor mainly includes an input circuit for inputting various kinds of information pieces, an output circuit for driving the coil windings of the motor, an MPU for calculating a control amount based on the information from the input circuit and outputting a control signal to the output circuit; the control unit has two pieces each of the input circuit, the output circuit, and the, and can supply respective electric currents to the windings of the motor or can cut off the supply; the MPUs each have a CPU incorporated therein, a trigger circuit for a trigger signal having a predetermined period; the two CPUs synchronize at least control commands in accordance with the trigger signal and output the control commands.

Electric driving apparatus and electric power steering apparatus

An initial check is executed individually on each group of a plurality of groups constituted by a plurality of multiphase windings () of a motor () and a plurality of inverter circuits () corresponding respectively thereto, opening/closing control is executed on a plurality of relays () in accordance with an implementation result of the initial check so that respective timings at which power is supplied to the plurality of inverter circuits are offset, and drive control is executed on the plurality of inverter circuits in accordance with the implementation result of the initial check so that respective currents passed through the plurality of multiphase windings are offset.

Electric power steering control apparatus and electric power steering control method

Provided are a motor control device () for controlling a motor () having a plurality of phases, for quickly and accurately detecting a phase in which an open-state fault has occurred when the open-state fault occurs in a target phase. When a power-supply voltage (Vb) is equal to or higher than a predetermined voltage (Vthr), a motor rotation speed (&#x3c9;) is equal to or lower than a predetermined speed (&#x3c9;thr), a target x-phase voltage command (Vx*) is not in the vicinity of zero, a current (Ix) of the target x-phase is equal to or lower than a predetermined current (Iu_thr), and a state in which a control error is equal to or larger than a predetermined error is detected over a predetermined time period or longer, occurrence of an open-state fault in the target phase is determined.

Motor control device and electric power steering device using same

The apparatus herein provided includes a plurality of systems including driving circuits () for driving motor coils () corresponding thereto, and a control unit () for controlling control values of the driving circuits (), wherein, when a fault occurs in at least one of the plurality of systems including the motor coils (), the control unit () decreases a control value of a system(s) in which the fault occurs from an ordinary time control value or stops the drive by the system(s) in which the fault occurs, and also increases a control value of another system(s) in which the fault does not occur to more than an ordinary time control value.

Electric power steering apparatus

Provided is a control device for an AC rotating machine, for controlling the AC rotating machine including a plurality of sets of windings. The control device includes: a plurality of inverters each including, in respective phases, switching elements for controlling voltages to be applied to respective phases of the windings; current control portion for issuing voltage commands corresponding to the voltages to the respective inverters to control currents flowing through the windings; and failure detection portion for detecting at least one of a short-circuit failure or an open-circuit failure in each of the switching elements. The current control portion sets, in accordance with the failure detected by the failure detection portion, the same potential side of the respective phases of a faulty-side inverter in the same state as in the detected failure, and continues control on a normal-side inverter except for the faulty-side inverter.

Control device and method for AC rotating machine, and electrical power steering device

A control apparatus for AC rotating machine includes: a voltage command calculation means for calculating voltage commands on two rotational axes; a first voltage application means for applying voltages to first windings of a multiple-winding AC rotating machine having at least the first windings and second windings based on the voltage commands on two rotational axes output by the voltage command calculation means; and a second voltage application means for applying voltages to the second windings based on the voltage commands on two rotational axes output by the voltage command calculation means, wherein the second voltage application means applies voltages to the second windings based on the deviations between the currents fed to the first windings and the currents fed to the second windings.

Control apparatus for AC rotating machine and electrically-assisted power steering apparatus provided with the control apparatus

Provided are a motor controller for suppressing a torque pulsation with a simple configuration and obtaining a sufficient output torque in the case of an open-type fault occurring in any one of windings of a motor and inverters, and an electric power steering device using the motor controller. In the motor controller for controlling a current supplied from and a voltage applied from a power source with respect to the motor including winding sets of a plurality of systems, when a fault determination unit () determines the occurrence of the open-type fault, the supply of the currents to the windings of one of the systems in which the fault has occurred is stopped by control performed on switching elements included in the inverter of the faulty system, whereas the supply of the currents to the windings of the normal system in which the fault has not occurred is continued.

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Chiyoda-ku, Japan

Jiro Okada