The compact drive of 2 EC motors
The compact drive of two or more motors incorporates sensors and
communication interface. It is intended for EC motors or their
combination with DC or stepping motors. The EC motor with three Hall
sensors on the stator can detected rest position of the rotor, what
means easy start-up and operation at low speeds. 16-bit DSC Microchip
provides PI control of motors, short-circuit protection and thermal
protection of motors, collection and evaluation of the scanned data,
communication protocols over serial RS485 or CAN bus. Operational and
error status are displayed by LED eg. in Morse code. The PCB on fig. is
equipped of two power stages L6234 , accelerometer for precise
measurement of incline and tilt , temperature sensor , absolute pressure
sensor 0..250kPa, potentiometers for setting parameters. It was used to
drive of special trolley with the leveling of the tilt. The drive
concept is suitable for both the software and hardware modifications (
power stages DRV8332 , bridge of discrete MOSFETs )
