Dumping control system and dumping control method of articulated dumper

The invention relates to a dumping control system and a dumping control method of an articulated dumper. The control system comprises an instrument panel, an operating handle, an electric control reversing valve, an angular displacement sensor, a controller, a dumping oil cylinder and an alarm device, wherein the instrument panel is connected with the controller; one end of the electric control reversing valve is connected with the controller; the other end of the electric control reversing valve is connected with the dumping oil cylinder through a hydraulic control reversal valve; the angulardisplacement sensor is connected with the controller; the controller receives a lifting angle signal of a cargo container detected by the angular displacement sensor; the instrument panel displays aheight and a dumping angle of the whole dumper; the operating handle is connected with the controller; the controller receives a signal of the operating handle and outputs a signal to the electric control reversing valve accor