THE MECHANISM OF AUTOMATIC CONTROL WITH VARIABLE STRUCTURE-PARAMETERS  

作　　者：涂承媛 

机构地区：[1]Department of Automatic Control, Beijing Polytechnic University, Beijing 100022, PRC

出　　处：《Chinese Science Bulletin》1991年第2期167-169,共3页

摘　　要：The general form of the dynamic response of a controlled process is shown in Fig. 1, where E is the deviation of the controlled variable U from its set-point value U₀ （i. e. E= U₀-U）. For convenience in discussing, we transform the curve in Fig. 1 into that in Fig. 2 a t-domain curve of |E|. Now, we discuss a certain period of variation of the curve in Fig. 2, e.g. a time interval between to and t₄.We partition this period of variation into four subintervals: t₀—t₁, t₁—t₂, t₂—t₃ and t₃—t₄. It is easily seen that, in the first and the third subintervals, the rate of change

关 键 词：deviation PARTITION CONVENIENCE brought unfavorable eliminate FOURTH weakened TENDENCY hence 

分 类 号：N[自然科学总论]