CONTROL SPEED ANCHOR collector electric motors with permanent excitation field

摘要

The invention relates to regulating the number of revolutions switched pulse motors technique supply voltage and is designed for use, for example, when the fan motor control implementation vehicle heater. The apparatus comprises a series connection of dial frequency comparison unit, the error amplifier, a pulse voltage converter and a switching element included in the feed circuit of the motor armature. There is also a clock generator and voltage sampling unit. Output clock generator connected to the timing input of pulse voltage converter. sampling node voltage inputs are connected to the terminals of the armature of the motor and the output clock, with sampling voltage generated by the motor during the open state of the switching element, and the output node via a memory coupled to the feedback input of the comparison unit. The utility model improves the accuracy of regulation of the motor speed while simplifying the construction of the control device. This enhances the quality and reliability of the motor control.