Conveying and positioning system and method

A conveying and positioning method, comprising:

• controlling, by an intelligent variable-frequency controller, a driving motor on a roller machine to drive a conveying trolley to move along the roller machine, such that, along with the conveying trolley, a reflector disposed on the conveying trolley entering a detection range of a distance sensor disposed on the roller machine;
• recognizing, by the distance sensor, position information of the conveying trolley in a conveying process by receiving a signal from the reflector, and feeding back the position information to the intelligent variable-frequency controller;
• feeding back, by a rotary encoder, rotation speed information of the driving motor to the intelligent variable-frequency controller;
• combining, by the intelligent variable-frequency controller, the position information of the conveying trolley fed back by the distance sensor and the rotation speed information of the driving motor fed back by the rotary encoder, and comparing the position information with a target position information of the conveying trolley preset in the intelligent variable-frequency controller;
• outputting an accurate voltage frequency controller information to control the rotation speed of the driving motor to slow down the conveying trolley;
• and,
• controlling, by the intelligent variable-frequency controller, the driving motor to stop rotating upon the conveying trolley reaching a preset position, so that realizing an accurate positioning for the conveying trolley.