Motor control device

A motor control device for controlling a drive of a motor having a plurality of winding sets, in which phase currents having phases shifted by predetermined degrees are energized, and which are coaxially arranged, comprising:

• a group of components configured to control energization to a specific winding set, wherein a unit of the group is defined as system, with respect to a certain component a system including the certain component is defined as own system, and the other system not including the certain component is defined as other system;
• in at least of two systems of the plurality of systems,
• a first power converter and a second power converter configured to supply power to the corresponding winding sets based on an operation of a plurality of switching elements;
• a first microcomputer and a second microcomputer configured to generate a drive signal which drives the power converter at least in the own system, when the first microcomputer and the second microcomputer are normal;
• a first monitoring circuit and a second monitoring circuit configured to monitor individually a fault of the first microcomputer and the second microcomputer;
• and
• a first switching circuit group and a second switching circuit group respectively provided between first and second microcomputers and the first and second power converters, the first switching circuit group and the second switching circuit group respectively including a plurality of switching circuits corresponding to the plurality of switching elements of the power converters, and receiving an own drive signal generated by the microcomputers in the own system and other drive signal generated by a microcomputer other than the microcomputers of the own system so as to select the own drive signal or the other drive signal according to a selection signal from the microcomputers of the own system, and the first switching circuit group and the second switching circuit group configured to output the selected drive signal to the power converter of the own system;
• wherein
• the first microcomputer and the second microcomputer are configured to
• output commonly the own drive signal which is output to the switching circuit group in the own system, as the other drive signal to the switching circuit group in the other system, and
• output the selection signals to the switching circuit groups of the own system so as to select the own drive signal when the microcomputers operate normally, and output the selection signals so as to select the other drive signals when the monitoring circuit of the own system detects an faulty in the microcomputers, and
• the drive signal changes discontinuously based on the phases shifted by the predetermined degrees, when switching from the own drive signal to the other system.

A motor control device for controlling a drive of a motor having a plurality of winding sets, in which phase currents having phases shifted by predetermined degrees are energized, and which are coaxially arranged, comprising:

• a group of components configured to control energization to a specific winding set, wherein a unit of the group is defined as system, with respect to a certain component a system including the certain component is defined as own system, and the other system not including the certain component is defined as other system;
• in at least of two systems of the plurality of systems,
• a first power converter and a second power converter configured to supply power to the corresponding winding sets based on an operation of a plurality of switching elements;
• a first microcomputer and a second microcomputer configured to generate a drive signal which drives the power converter at least in the own system, when the first microcomputer and the second microcomputer are normal;
• a first monitoring circuit and a second monitoring circuit configured to monitor individually a fault of the first microcomputer and the second microcomputer;
• and
• a first switching circuit group and a second switching circuit group respectively provided between first and second microcomputers and the first and second power converters, the first switching circuit group and the second switching circuit group respectively including a plurality of switching circuits corresponding to the plurality of switching elements of the power converters, and receiving an own drive signal generated by the microcomputers in the own system and other drive signal generated by a microcomputer other than the microcomputers of the own system so as to select the own drive signal or the other drive signal according to a selection signal from the microcomputers of the own system, and the first switching circuit group and the second switching circuit group configured to output the selected drive signal to the power converter of the own system;
• wherein
• the first microcomputer and the second microcomputer are configured to
• generate a driver signal which drives the power convertor in the other system apart from a drive signal which drives the power convertor in the own system, and output it as the other drive signal to the switching circuit group in the other system, and
• output the selection signals to the switching circuit groups of the own system so as to select the own drive signal when the microcomputers operate normally, and output the selection signals so as to select the other drive signals when the monitoring circuit of the own system detects an faulty in the microcomputers, and
• the drive signal is continuous when switching from the own drive signal to the other system.