摘要:
A motor control device including a PWM generator generating a PWM generator generating a PWM signal to be outputted to a drive circuit that energizes a winding of a switched reluctance motor; a rectangular wave generator outputting a rectangular wave signal of 1 pulse or more to the drive circuit in 1 drive period of each phase based on a rotational position of the motor; and a drive signal switcher executing switching so that a PWM drive by the PWM signal is performed when a rotational speed of the motor is equal to or less than a threshold value and a rectangular wave drive by the rectangular wave signal is performed when the rotational speed of the motor is greater than the threshold value. The PWM generator synchronizes a timing to start generation of a carrier of the PWM signal with rising of the rectangular wave signal.
摘要:
Disclosed is a data processing device (11) with a test control circuit comprising a CPU (2), peripheral devices (3) such as a ROM, a RAM, and the like, an address bus (12) through which the CPU (2) is connected to the peripheral devices (3), an input/output circuit (4) as a interface circuit for controlling transfer of data input/output and an address signal between the address bus (12) and the data bus (13) and an external device (10), and a control circuit (14) incorporated in the data processing device (11) for isolating the address bus (12) and the data bus (13) from the CPU (2) in a test mode of the device and for controlling the input/output operations for the peripheral devices (3), the operation of the input/output control circuit (4), and the operation of the CPU (2).
摘要:
Disclosed is a data processing device (11) with a test control circuit comprising a CPU (2), peripheral devices (3) such as a ROM, a RAM, and the like, an address bus (12) through which the CPU (2) is connected to the peripheral devices (3), an input/output circuit (4) as a interface circuit for controlling transfer of data input/output and an address signal between the address bus (12) and the data bus (13) and an external device (10), and a control circuit (14) incorporated in the data processing device (11) for isolating the address bus (12) and the data bus (13) from the CPU (2) in a test mode of the device and for controlling the input/output operations for the peripheral devices (3), the operation of the input/output control circuit (4), and the operation of the CPU (2).