Abstract: A device and a method for controlling a wiper of a vehicle. The device may include a wiper actuator for driving the wiper of the vehicle, a sensor for measuring a driving speed of the wiper, and a controller that controls the wiper of the vehicle based on a relationship between a driving voltage applied to the wiper actuator and the driving speed measured by the sensor.

Abstract: A water pumping system, a motor drive, and a method of starting pumping by the motor drive. The method includes performing repeated starting attempts to overcome stiction in a progressive cavity pump by attempting to supply power to an electrical motor at increasing power levels in each starting attempt and supplying the power at the increasing power levels if the power is available in from a power source; and after each starting attempt: reducing the power applied to the electrical motor to a reduced power level; determining a rotational speed of the electrical motor; determining if the rotational speed matches a speed corresponding to the reduced power level applied to the electrical motor; if the rotational speed does not match and a predetermined number of starting attempts has not been reached, performing a next starting attempt; and if the rotational speed does match, entering a normal mode of operation.

Abstract: A wiper device that includes: a wiper motor that swings a wiper blade that is coupled to the wiper motor through a wiper arm to-and-fro over a window pane between an upper return position and a lower return position; and a drive component that gradually increases power supplied to the wiper motor until the rotation speed of the wiper motor reaches a specific speed when the wiper motor has been restarted from a stationary state of the wiper blade between the upper return position and the lower return position.

Abstract: A wiper device that includes: a wiper motor that swings a wiper blade that is coupled to the wiper motor through a wiper arm to-and-fro over a window pane between an upper return position and a lower return position; and a drive component that gradually increases power supplied to the wiper motor until the rotation speed of the wiper motor reaches a specific speed when the wiper motor has been restarted from a stationary state of the wiper blade between the upper return position and the lower return position.

Abstract: An automotive electric motor speed control system may include at least one electric motor adapted to cause a moveable element to move, a DC/DC power converter configured to output a voltage to the at least one electric motor that increases to a desired value and subsequently decreases to control the movement of the moveable element, and a controller configured to control the rate of voltage increase and voltage decrease output by the converter.

Abstract: A drive control device is provided with a determining section and a voltage increasing section. The determining section determines if the actual acceleration is deficient in comparison with the acceleration requested by the driver or if the generator output is deficient in comparison with the acceleration requested by the driver. The voltage increasing section increases the voltage supplied to the electric generator from a vehicle mounted electric power source when the determining section determines that the actual acceleration or the generator output is deficient. As a result, the generator output deficiency is eliminated and the required motor torque is produced, thereby enabling the vehicle to start into motion appropriately in accordance with the acceleration requested by the driver.

Abstract: A motor control device carries cut feedback control of a motor such that the rotational speed of the motor is equal to the command speed. A control voltage is first calculated as the sum of a first constant times the difference between the command speed and the actual rotational speed, a second constant times the actual rotational speed and a predetermined offset value. The calculated control voltage is corrected on the basis of the phase difference between the command speed and the actual rotational speed and a voltage after the correction is outputted as a motor control voltage. The rotational speed of the motor can be caused to rapidly follow the target speed by adjusting the first and second constants and the offset value whether the command speed is relatively low or high, thereby to make it possible to control the motor at a constant speed.

Abstract: A microprocessor based electric actuator control system is provided which allows accurate determination of the forces opposing movement of manipulator driveshaft. The control system electronically sets a predetermined current through an actuator to produce an electromagnetic force. A displacement measuring device, in conjunction with a time clock measures velocity and calculates acceleration of the actuator in response to the current. The force on the shaft is computer varied such that the acceleration is determined. For the acceleration to be zero, the electromagnetic force be exactly balanced by forces equal but opposite in magnitude. Since the force value is determined by the computer, the opposing force is also accurately determined with no external sensing device needed.