Translational switch rectilinear motion accurate positioning control system

The utility model relates to a translational switch rectilinear motion accurate positioning control system. The control system comprises a programmable logic controller, a frequency converter, a motor, a pulse distributor and a transmission mechanism. One end of the programmable logic controller is bidirectionally and electrically connected to the frequency converter, and the other end of the programmable logic controller is connected to a brake and is connected to the motor through the brake. The frequency converter is bidirectionally and electrically connected to the motor. The power output terminal of the motor is connected to the transmission mechanism, and an encoder is arranged on a rear output shaft of the motor. The encoder is electrically connected to the pulse distributor, and the pulse distributor is electrically connected to the programmable logic controller and the frequency converter. The transmission mechanism is connected with the fixed motor and a switch moving portion which moves linearly along a track, so that the switch can move linearly. The control system is of simple and reasonable structure, the positioning accuracy in a turning process of the switch can be improved, the impact on the transmission mechanism due to large inertia can be decreased when the switch starts and stops, the service lifetime of equipment is prolonged, and failure protection for the equipment can be carried out in real time.