A control circuit receives a command from outside and causes an arithmetic unit to perform arithmetic operation M times (M is an integer of 2 or more) by using input data from outside and calculated data held in a memory, thereby making the arithmetic unit and the memory function as an IIR filter. The IIR filter is a filter capable of determining output data by arithmetic operation of K times out of the M times (K<M). The control circuit receives the command from outside and then causes the arithmetic unit to perform the arithmetic operation K times in advance, thereby determining the output data and outputting the output data to outside at that time.

A wiper device including: a power supplying circuit including plural switching elements, the power supplying circuit supplying, to a wiper motor, voltage that has been converted in accordance with switching control of the plural switching elements; a temperature detecting section detecting a temperature relating to a temperature of at least one of the switching elements among the plural switching elements; a current detecting section detecting current flowing to any of the switching elements among the plural switching elements; and a control section that, in a case in which the current detected by the current detecting section exceeds a limit current at the temperature detected by the temperature detecting section, carries out switching control of the switching elements such that the voltage supplied to the wiper motor decreases.

A method is disclosed for evaluating an operational readiness of an electric motor, such as an electric motor of a fan. The method includes: initiating a run-up process of the electric motor, the speed being changed in several speed levels during the run-up process, generating at least one measured value by measuring a physical variable with a sensor of the electric motor in at least one of the speed levels, loading at least one parameter datum from a parameter memory of the electric motor, wherein the at least one parameter datum corresponds to the at least one measured value generated, and evaluating the at least one measured value for at least one of the speed levels using the at least one loaded parameter datum. Further disclosed are an electric motor with a parameter memory and a parameterization interface as well as a fan with this electric motor and an impeller.

A motor and an application apparatus are provided. The motor includes a stator having a stator core and a stator winding wound on the stator core, a rotor, a magnetic sensor configured to detect a magnetic field polarity of the rotor and output a corresponding signal, and a motor driving circuit configured to drive the rotor to rotate with respect to the stator based on the signal output from the magnetic sensor. At a rest position of the rotor, the magnetic sensor is arranged with an advance angle with respect to a polar axis of the rotor, to make the motor have a high starting torque.

A motor and an application apparatus are provided. The motor includes a stator having a stator core and a stator winding wound on the stator core, a rotor, a magnetic sensor configured to detect a magnetic field polarity of the rotor and output a corresponding signal, and a motor driving circuit configured to drive the rotor to rotate with respect to the stator based on the signal output from the magnetic sensor. At a rest position of the rotor, the magnetic sensor is arranged with an advance angle with respect to a polar axis of the rotor, to make the motor have a high starting torque.

A motor driver system. Implementations may include: a motor driver configured to couple with a motor where the motor driver comprises a multipurpose pin. A controller may be included coupled with the motor driver through at least the multipurpose pin. The motor driver during an enable mode, may be configured to receive serial data from the controller and to send serial data to the controller using the multipurpose pin during a normal operation mode of the motor driver. The motor driver may be configured to output a frequency generator (FG) signal to the controller using the multipurpose pin during the normal operation mode of the motor driver.

A motor driver system. Implementations may include: a motor driver configured to couple with a motor where the motor driver comprises a multipurpose pin. A controller may be included coupled with the motor driver through at least the multipurpose pin. The motor driver during an enable mode, may be configured to receive serial data from the controller and to send serial data to the controller using the multipurpose pin during a normal operation mode of the motor driver. The motor driver may be configured to output a frequency generator (FG) signal to the controller using the multipurpose pin during the normal operation mode of the motor driver.

A switch device for moving switch rails. The switch device includes a motor operatively coupled to move the switch rails into and between first and second positions. The motor is configured for electricity to flow therethrough along a first path and a second path. A first path relay has two normally open contacts each within the first path, where activating the first path relay closes the two normally open contacts thereof. A second path relay has two normally open contacts each within the second path, where activating the second path relay closes the two normally open contacts thereof. The motor moves the switch rails towards the first position when the first path relay is activated and the second path relay is deactivated, and the motor moves the switch rails towards the second position when the second path relay is activated and the first path relay is deactivated.

The synchronous machine module includes a synchronous machine and a rotational speed controller for controlling a rotational speed of the synchronous machine, which rotational speed controller has a detector for detecting a variable which is formed by the effective power or is dependent thereon. The rotational speed controller is designed to set the rotational speed of the synchronous machine and/or the time profile thereof as a function of the detected variable and/or its time profile. The vehicle drive has such a synchronous machine module and a power generator, which in order to supply the synchronous machine module is connected thereto. The vehicle is, in particular, an aircraft and has such a vehicle drive and/or such a synchronous machine module.

The synchronous machine module includes a synchronous machine and a rotational speed controller for controlling a rotational speed of the synchronous machine, which rotational speed controller has a detector for detecting a variable which is formed by the effective power or is dependent thereon. The rotational speed controller is designed to set the rotational speed of the synchronous machine and/or the time profile thereof as a function of the detected variable and/or its time profile. The vehicle drive has such a synchronous machine module and a power generator, which in order to supply the synchronous machine module is connected thereto. The vehicle is, in particular, an aircraft and has such a vehicle drive and/or such a synchronous machine module.