Electric control air suspension system height control method based on model-free adaptive control

The invention discloses an electrically controlled air suspension system height control method based on model-free adaptive control, which comprises the following steps: fitting a data model of a controlled system, carrying out online estimation on parameters of the fitted data model by using input and output data of the controlled system, outputting a duty ratio of an electromagnetic valve to the electromagnetic valve by an ECAS controller, connecting the electromagnetic valve with an air source, and controlling the air source to supply air to the controlled system. Meanwhile, the air spring is connected with an electromagnetic valve, and the electromagnetic valve controls the height of the air spring to control the height of the vehicle body. The method has the advantages that the method is applied to low-configuration vehicle models, the cost of mounting an air pressure sensor on a vehicle is saved, the mathematical modeling process of a vehicle suspension system is also omitted, and the control precision