Fracturing apparatus and control method thereof, fracturing system

A control method for controlling a fracturing apparatus, the fracturing apparatus comprising:

• a plunger pump comprising a power end and a hydraulic end;
• a prime mover comprising a power output shaft;
• a clutch comprising a first connection portion, a second connection portion, and a clutch portion between the first connection portion and the second connection portion;
• a clutch hydraulic system configured to provide hydraulic oil to the clutch, wherein the power end of the plunger pump comprises a power input shaft, the first connection portion is connected with the power input shaft, and the second connection portion is connected with the power output shaft of the prime mover;
• and
• a first pressure sensor,
• the control method comprising:
• detecting, by the first pressure sensor, a hydraulic pressure of the clutch hydraulic system;
• controlling the clutch to disengage if the hydraulic pressure of the clutch hydraulic system is lower than a first pressure threshold;
• detecting a first rotation speed of the power input shaft of the plunger pump;
• detecting a second rotation speed of the power output shaft of the prime mover;
• and
• calculating a ratio of the first rotation speed and the second rotation speed, and controlling the clutch to disengage if the ratio is smaller than a first preset ratio or greater than a second preset ratio.