• A novel adaptive fuzzy controller is designed. • A hybrid adaptive immune fuzzy controller for semi-active air suspension of large high-clearance sprayer is proposed. • The proposed controller has a better performance, shows strong adaptability. Large high-clearance self-propelled sprayer is an important plant protection machinery in the process of agricultural production, which plays a very important role in the stable development of agriculture. Aiming at the complex operating conditions of the high-clearance self-propelled sprayer, a hybrid adaptive immune fuzzy algorithm for high-clearance self-propelled sprayer is proposed to effectively improve the ride comfort and road friendliness of the sprayer. First, the adaptive fuzzy controller is designed by combining the characteristics of the functional scaling factor. Then, the adaptive fuzzy controller is combined with the biological immune regulation mechanism, and the adaptive immune fuzzy controllers of stiffness and damping are designed, so as to realize the design of the hybrid adaptive immune fuzzy controller (HAIFC), which effectively improves the control accuracy and response speed of the semi-active air suspension system. The research results under variable working conditions show that the proposed HAIFC algorithm reduces the maximum (MAX) and the root mean square (RMS) indexes of the sprung mass acceleration by more than 50% and 60%, and the MAX and RMS indexes of the tire dynamic load by more than 25% and 20%, respectively, which has a good control effect, shows strong adaptability and robustness to the working conditions, and provides a new method for designing the sprayer semi-active air suspension system.
Ji et al. (Wed,) studied this question.