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The identification procedure for nonlinear control system of shield machine tunneling is proposed by using neural network. Based on nonlinear constitutive model of soil and mass conservation law, the difference equation of nonlinear discrete system is deduced. Bp neural network is applied for an identifier to estimate model parameters of time varying control system. The numerical simulation shows...
PID controllers have been widely used in many industries. They can provide robust and reliable performance for most systems. However, it is well known that the automatic controlled systems are susceptible to faults and the faults can cause a malfunction of the loop. The main motivation in this paper is to present a design scheme of controllers using the least squares support vector machines (LS-SVM)...
A nonlinear PD controller is developed in new strategy to keep acceptable performance of an electro-hydraulic force system in the condition of large variation of stiffness and load. The controller uses two nonlinear tracking differentiators to obtain high quality differential signals. New approach is adopted to build the nonlinear gain functions and experiential formulas are given to determine the...
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