Storage tank fixing assembly and method for controlling the same

A method for controlling a storage tank fixing assembly comprising a first vehicle body frame and a second vehicle body frame provided in an interior of a vehicle, a storage tank, a first fixing frame and a second fixing frame connected to the first vehicle body frame and the second vehicle body frame, respectively, and extending in a vertical direction, a first support bracket configured to support one side of the storage tank and a second support bracket configured to support an opposite side of the storage tank, and a first damper configured to adjust a movement of the first support bracket in the vertical direction and a second damper configured to adjust a movement of the second support bracket in the upward/downward, the method comprising:

• detecting a displacement of the first vehicle body frame or the second vehicle body frame;
• determining a difference between displacements of the first vehicle body frame and the second vehicle body frame in the vertical direction;
• determining whether the vehicle is in a harsh driving condition based on the difference between the displacements;
• identifying whether a displacement of the first vehicle body frame in a upward direction is greater than a displacement of the second vehicle body frame in the upward direction, based on that the difference between the displacements is greater than or equal to a first preset value;
• and
• performing a control to switch the first damper from a first mode to a second mode, in which a relative movement of the first support bracket with respect to the first fixing frame in the vertical direction is allowed more freely, based on that the displacement of the first vehicle body frame is greater than or equal to the displacement of the second vehicle body frame.