The present disclosure relates to systems and methods for controlling the operation of a motor actuator for positioning a moveable element. Operational characteristics of the movable element over its operational range are determined. A first PWM signal to control the actuator over a first portion of the operational range of the movable element is generated. A second PWM signal to control the actuator over a second portion of the operational range of the movable element is generated. The first PWM signal is based on a linear transfer function having a first gain level and the second PWM signal is based on a linear transfer function having a second gain level. An output position of the moveable element is executed based the first PWM signal or the second PWM signal.

A method is provided for electrically driving a motor having a plurality of phase windings such that EMC (electromagnetic compatibility) is improved and the running performance of the motor is simultaneously kept constant. At least one of the phase windings is not supplied with a current pulse during a complete revolution of the rotor, or at least one switchable electrical resistor is switched on, for at least one subsequent commutation phase by means of an electrical switching element, if the detected rotor speed is greater than the specified target speed.

A method is provided for electrically driving a motor having a plurality of phase windings such that EMC (electromagnetic compatibility) is improved and the running performance of the motor is simultaneously kept constant. At least one of the phase windings is not supplied with a current pulse during a complete revolution of the rotor, or at least one switchable electrical resistor is switched on, for at least one subsequent commutation phase by means of an electrical switching element, if the detected rotor speed is greater than the specified target speed.

A motor controlling device configured to control an on-board motor is provided, which includes an H-bridge type drive circuit comprised of first switching elements and configured to drive the on-board motor, and a controlling circuit configured to control the on-board motor by controlling the drive circuit, the controlling circuit carrying out an ON control of one of the first switching elements connected to ground, when not operating the on-board motor.

A motor controlling device configured to control an on-board motor is provided, which includes an H-bridge type drive circuit comprised of first switching elements and configured to drive the on-board motor, and a controlling circuit configured to control the on-board motor by controlling the drive circuit, the controlling circuit carrying out an ON control of one of the first switching elements connected to ground, when not operating the on-board motor.

According to an embodiment, a driving apparatus of a DC brush motor includes: a drive circuit that supplies motor current to a coil of a DC brush motor; and a control circuit configured to: after a predetermined time interval has elapsed since starting-up of the DC brush motor, drop down step-by-step a limit value that sets an upper limit of the motor current; and detect turning into a state where the motor current is limited by the limit value.

According to an embodiment, a driving apparatus of a DC brush motor includes: a drive circuit that supplies motor current to a coil of a DC brush motor; and a control circuit configured to: after a predetermined time interval has elapsed since starting-up of the DC brush motor, drop down step-by-step a limit value that sets an upper limit of the motor current; and detect turning into a state where the motor current is limited by the limit value.

A method for controlling a DC pump motor, preferably a brushed DC motor for pumping lubricant, which motor is controlled by a pulse-width modulated (PWM) control signal, wherein current parameters are acquired in an acquisition step and a duty cycle (D) of the PWM control signal (S.sub.PWM) is adapted and/or changed on the basis of the detected parameters in an adaptation step, wherein the acquisition of current parameters comprises at least the acquisition of a current input voltage (U.sub.B).

A method for controlling a DC pump motor, preferably a brushed DC motor for pumping lubricant, which motor is controlled by a pulse-width modulated (PWM) control signal, wherein current parameters are acquired in an acquisition step and a duty cycle (D) of the PWM control signal (S.sub.PWM) is adapted and/or changed on the basis of the detected parameters in an adaptation step, wherein the acquisition of current parameters comprises at least the acquisition of a current input voltage (U.sub.B).

In a drive device, a first connection circuit, a second connection circuit, and a third connection circuit are connected individually between an input end and an output end. A first motor is connected between a connection node between a first input switch and a first output switch of the first connection circuit and a connection node between a third intermediate switch and a third output switch of the third connection circuit. A second motor is connected between a connection node between a second input switch and a second output switch of the second connection circuit and a connection node between a third input switch and the third intermediate switch of the third connection circuit.