Speed regulator and control method of speed regulator

The invention relates to a speed regulator and a control method of the speed regulator. The speed regulator comprises two control circuits, each control circuit comprises two processors, the four processors are connected with one another, and the types of the two processors in the same control circuit are different; when the processor in the main control circuit breaks down, the fault processor in the main control circuit sends synchronization information to a first target processor in the slave control circuit, so that the first target processor and a second target processor are connected to form a target data transmission path, and data transmission is realized; wherein the first target processor is a processor, the type of which is the same as that of the fault processor, in the slave control circuit, and the type of the second target processor is different from that of the first target processor. By adopting the speed regulator, the situation that a system fault is caused by a single-point fault can be av