The controller is capable of automatically on-line adjustment of parameters, and effectively control objects,which are characterized by large inertia or long time lag, in various thermal engineering processes.
In order to overcome the nonlinearization, time-variability and pure lag of fuel-drum pressure control loop in the power station, a PID-type fuzzy neural network with a self-regress nerve cell was proposed as the drum pressure controller in the coordinate control system.
Because steam temperature of fossil fired power plants is characterized by their large inertia,outstanding time lag and sizable swaying property,it is rather difficult to obtain satisfactory control results with conventional PID cascade control methods.
Based on the analysis of dynamic characteristics of the main steam temperature,considering the feature of the large delay,the large lag and slow-time varying and the various disturbances for the main steam temperature,the centers around a strategy which combines fuzzy with PID control to control the main steam temperature.
To the large lag and large delay changeable objects which are common in industry, the parameters of PID controller were regulated adaptively by fuzzy self-tuning PID controller. The method makes full use of the advantages of fuzzy technology and PID control, to realize intelligent PID control.
The system of delay in delivery is accompanied by the development of maritime transportation and advancement of navigation technology. It also represent the whole international trend, the foot and the choice chose by the lawmaker.
Some other issues about delay of performance are also discussed in this paper, including the notice from the obligee to perform, excuse of delay, enforced performance, damages, payments stipulated by the contract, termination of contract etc.
(0.1、0.2mg. kg-1*** p<0.01 vs saline), phy can increased the rat's choice percentage on delayed time in 810scc (0.1mg . kg-1** p<0.05; 0.2mg . kg-1. *** p<0.01 vs saline), and had antagonistic effects on memoria detriment by Scop.
Both the Cs?rg?-Révész's increments and a class of the lag increments are the special cases of this general form of increments.
On the stability of differential systems with time lag
By means of our inequality and the method of Lyapunov function we study the stability of two kinds of large scale differential systems with time lag and the stability of a higher-order differential equation with time lag.
Some results on lag increments of principal value of brownian local time
We study some limit results on lag increments of Y(t) and obtain various results all of which are related to earlier work by Hanson and Russo in 1983.