摘要:
In an electric motor control apparatus, an electric motor driving unit includes: a current detection unit configured to detect a current flowing through a current detection place in the electric motor driving unit. A control unit includes a current calculation unit configured to calculate a current value of a current flowing through an electric motor from an offset correction value obtained based on a first detection value detected at a time when a current flows through the current detection place and a second detection value detected at a time when a current does not flow through the current detection place. The offset correction value includes: a first offset correction value stored in nonvolatile memory of the control unit at a time of assembling the electric motor control apparatus; and a second offset correction value computed by the control unit while the electric motor is driven.
摘要:
In an electric motor control apparatus, an electric motor driving unit includes: a current detection unit configured to detect a current flowing through a current detection place in the electric motor driving unit. A control unit includes a current calculation unit configured to calculate a current value of a current flowing through an electric motor from an offset correction value obtained based on a first detection value detected at a time when a current flows through the current detection place and a second detection value detected at a time when a current does not flow through the current detection place. The offset correction value includes: a first offset correction value stored in nonvolatile memory of the control unit at a time of assembling the electric motor control apparatus; and a second offset correction value computed by the control unit while the electric motor is driven.
摘要:
A steering control apparatus of a simple configuration is adaptable so A steering control apparatus of a simple configuration is adaptable so as to construct a redundant system from an input to an output system at low cost in a reliable manner. A torque sensor detects a steering torque, and a motor (3) provides torque to a steering system. A motor drive circuit (56) drives the motor, and a steering control section (53a) calculates at least a target current for the motor based on the steering torque. A motor control section (53b) provides an instruction to the motor drive circuit (56) based on the target current. A steering control verification section (54a) verifies an operation of the steering control section (53a) based on the steering torque and the target current. A motor control verification section (54b) verifies an operation of the motor control section (53b) based on a predetermined state quantity of the motor drive circuit (56) or the motor (3).
摘要:
In an angle detection method with a resolver, the method being for detecting a rotational angle of a rotator by synchronously detecting a first signal and a second signal that are two phase sine wave modulation signals obtained from a one phase excitation/two phase output resolver, the method includes: a first signal detection process which detects a signal in the order of the first signal and the second signal; and a second signal detection process which detects a signal in the order of the second signal and the first signal.
摘要:
A steering control apparatus of a simple configuration is adaptable so as to construct a redundant system from an input to an output system at low cost in a reliable manner. A torque sensor detects a steering torque, and a motor (3) provides torque to a steering system. A motor drive circuit (56) drives the motor, and a steering control section (53a) calculates at least a target current for the motor based on the steering torque. A motor control section (53b) provides an instruction to the motor drive circuit (56) based on the target current. A steering control verification section (54a) verifies an operation of the steering control section (53a) based on the steering torque and the target current. A motor control verification section (54b) verifies an operation of the motor control section (53b) based on a predetermined state quantity of the motor drive circuit (56) or the motor (3).
摘要:
Herein disclosed is a lock device for use with electrically operated and manually operated actuating devices, which comprises a housing structure, a locking and unlocking lever which is received in the housing structure and is pivotal between a first position to cause a locked state of the lock device and a second position to cause an unlocked state of the lock device, and a first concealing structure which is integrally connected to the housing structure and conceals a mechanical connection between one end of the locking and unlocking lever and the electrically operated actuating device. With this construction, a so-called anti-theft function of the lock device is provided. In order to achieve a much more assured anti-theft function, the lock device further has a second concealing structure which is integrally connected to the housing structure and conceals another mechanical connection between the other end of the locking and unlocking lever and the manually operated actuating device.
摘要:
A relay amplifier provided at a branching point of an electric power line in an electric power line communication for amplifying communication signals, comprising a plurality of signal couplers provided at the respective electric power lines on both sides of the branching point for transmitting/receiving the communication signals to/from the electric power lines; and an amplifier for amplifying the communication signals inputted from the plurality of signal couplers.
摘要:
A control device for an AC rotating machine includes a voltage command calculation means (1) that calculates voltage commands on rotation two axes and a voltage applying means (2) that applies a voltage to an AC rotating machine (3), based on voltage commands on the rotation two axes outputted by the voltage command calculation means (1); the voltage command calculation means (1) calculates first-axis and second-axis voltage commands on the rotation two axes and reduces the limit value of the second-axis voltage command in proportion to the squared first-axis voltage command.
摘要:
A control device for an AC rotating machine includes a voltage command calculation means (1) that calculates voltage commands on rotation two axes and a voltage applying means (2) that applies a voltage to an AC rotating machine (3), based on voltage commands on the rotation two axes outputted by the voltage command calculation means (1); the voltage command calculation means (1) calculates first-axis and second-axis voltage commands on the rotation two axes and reduces the limit value of the second-axis voltage command in proportion to the squared first-axis voltage command.
摘要:
An over-power line communication system has a low impedance circuit unit, which is connected between the power lines, first signal couplers, which are set on the first communication device side to the low impedance circuit unit to electromagnetically couple the power lines with one of signal lines, second signal couplers, which are set on the second communication device side to the low impedance circuit unit to electromagnetically couple the power lines with the other of the signal lines, and an amplifier, which receives transmission signals taken out onto one of the signal lines by the first signal couplers, amplifies the received transmission signals, and sends the amplified signals to the other of the signal lines. The transmission signals amplified and then sent to the other of the signal lines are injected to the power lines by the second signal couplers.