Electronic control system of double beam bridge type crane for annular bended rail

The invention discloses an electronic control system of a double beam bridge type crane for an annular bended rail. The electronic control system comprises a driving unit which is arranged on a cranecart and cooperates with the annular bended rail; the annular bended rail is provided with an inner ring rail and an outer ring rail; the driving unit comprises an inner ring motor unit and an outer ring motor unit which operate on the inner ring rail and the outer ring rail correspondingly; each motor unit comprises front and back motors; the electronic control system comprises a PLC centralizedcontroller and a speed detection device which is arranged on each motor and is connected with the PLC centralized controller; the PLC centralized controller is connected with and drives the inner ringmotor unit and the outer ring motor unit correspondingly through two independent frequency converters; and a speed limited induction switch and a position induction switch which are connected with the PLC centralized controlle