In order to improve the accuracy of steering control for corn combine harvesters, a proportional integral derivative (PID) algorithm based fully hydraulic steering control method for corn combine harvesters is proposed. Firstly, by analysing the steering process, a steering dynamics model is constructed. Secondly, clarify the relevant variables and parameters, and derive the calculation formula for the electro-hydraulic steering control model. Again, the PID algorithm was used to design the steering controller, calculate the angular velocity deviation value, and design proportional, integral, and derivative control functions. Finally, by transforming the transfer function through Laplace transform, optimising the parameters of the PID controller, and considering practical factors such as delay for correction, the optimisation of the electronic control full hydraulic steering control was ultimately achieved. The experimental results show that the steering control accuracy of the proposed method is always above 90%, with low steering angle control error and good stability.
Zeng et al. (2025) studied this question.