Compressor control, compressor system and a compressor control method

The compressor control means for controlling the flow rate of the compressor, the compressor Ye Lun having a plurality of side flow passage and adjustment of the relative flow rate adjustment is connected in parallel to the outlet portion of the flow rate of each wheel, the compressor control means comprises: detecting an outlet side flow pressure passage pressure detecting unit; flow rate detecting unit detecting the flow rate of each of the impeller; to control unit controls the detection result of the pressure detecting portion of each output flow impeller adjustment command based on the flow rate adjusting unit, the control unit serving as the flow the lower limit of the set target value is compared with the set point flow rate of each wheel, a comparison result correction adjustment command based on the flow rate of the other Ye Lun.