Automatic leveling control system of fire-fighting truck working platform, fire-fighting truck and leveling method

The invention discloses an automatic leveling control system of a fire-fighting truck working platform, a fire-fighting truck and a leveling method. The automatic leveling control system comprises a control device, a horizontal angle sensor, an angle acceleration sensor and a leveling execution mechanism, wherein the horizontal angle sensor collects the inclination angle of the fire-fighting truck working platform relative to a horizontal plane and sends the inclination angle to the control device; the angle acceleration sensor collects the rotary angle acceleration of a crank arm and sends the rotary angle acceleration to the control device; the control device generates control signals according to the inclination angle of the fire-fighting truck working platform relative to the horizontal plane and the rotary angle acceleration of the crank arm and controls the leveling execution mechanism to finish the leveling operation of the fire-fighting truck working platform. According to the automatic leveling control system, the fire-fighting truck and the leveling method, the feedback of the angle acceleration is introduced, the feedback component of the angle acceleration is utilized for restraining a chattering phenomenon, two different control models are utilized for respectively controlling the automatic leveling of the working platform during lifting and falling processes, and a leveling cut-off region is arranged, so that the automatic leveling effect is enhanced.