利用MATLAB仿真设计出前馈反馈水箱模型，PID已经调节完毕，可以直接使用(The feedforward feedback water tank model is designed by MATLAB simulation. PID has been adjusted and can be used directly.)

多核极限学习器，是一种前馈神经网络，能逼近任意连续目标函数或分类任务重的任何复杂决策边界(Multi-kernel limit learner is a feedforward neural network, which can approach any complex decision boundary of any continuous objective function or classification task)