Method and device for controlling air conditioning system

A device for controlling an air conditioning system containing plural air conditioners, each of the plural air conditioners having at least one adjustment function able to conduct adjustment with respect to air, the device comprising:

• an obtainment part configured to obtain plural adjustment parameter groups of each of the plural air conditioners, wherein, each of the plural adjustment parameter groups of the corresponding air conditioner includes at least one adjustment parameter corresponding to the at least one adjustment function of the corresponding air conditioner, and a value of the at least one adjustment parameter indicates an operating state of the corresponding at least one adjustment function;
• an acquirement part configured to acquire at least one desired environmental parameter of each of one or more control targets;
• a selection part configured to select, based on the desired environmental parameters, one from the plural adjustment parameter groups of each of the plural air conditioners to serve as a target adjustment parameter group of the corresponding air conditioner, wherein, at least one actual environmental parameter of each of the one or more control targets, which is obtained by conducting joint adjustment with respect to the corresponding control target by the plural air conditioners according to their target adjustment parameter groups, is closer to the corresponding at least one desired environmental parameter than that obtained by conducting adjustment with respect to the corresponding control target by the plural air conditioners according to their remaining adjustment parameter groups;
• and
• a transmission part configured to respectively transmit the plural target adjustment parameter groups to the plural air conditioners, so that the plural air conditioners respectively set their adjustment functions according to the plural target adjustment parameter groups.