Variable air volume air conditioning system energy-saving controller and method

The invention discloses a variable air volume air conditioning system energy-saving controller and relates to the technical field of air conditioning and ventilating energy-saving control. The controller comprises a control main unit, a CPU arithmetic unit, a memorizer, an analog signal input interface, an RS485 communication interface, electric air valve actuators, variable air volume air valves,a fan frequency controller, a variable frequency fan, indoor temperature sensors and an outdoor temperature sensor. The CPU arithmetic unit, the memorizer, the analog signal input interface and the RS485 communication interface are all arranged in the control main unit. The indoor temperature sensors are arranged in air-conditioned rooms correspondingly. By means of the variable air volume air conditioning system energy-saving controller and the method, integrated control of multiple tail ends of a variable air volume air conditioning system can be achieved, settings are optimized dynamicallyin real time through indo