defy vt. (-fied;-fying) 1.挑,激。 2.蔑視,藐視,不顧,公然反抗。 3.使不能,使落空。 defying laws human and divine 無法無天。 defy death to defend 誓死保衛(wèi)。 I defy you to do that. 我看你敢不敢那么干。 They defy all comparison. 沒有能和他們比較的。 defy description 難以形容。 The door defies all attempts to open it. 門怎么也弄不開。
We use signed distance and centroid to defuzzify the total cost in the fuzzy sense in fuzzy inventory without backorder 利用有號距離和形心將無缺貨補(bǔ)貨的模糊庫存的總成本利用有號距離和形心解模糊化。
An idea , simulating the fuzzy model by establishing the fuzzy model and fuzzy control rule of the controlled object is proposed . generally , it is difficult to acquire the accurate mathematical description of the controlled object . a dynamic modulating factor is introduced in the designing of the fuzzy controller so as to improve the precision of the fuzzy control . and a more convenient defuzzify calculation method is adopted . the cart and the single inverted pendulum are taken so as to illustrate the simulation result . in addition , the detailed qualitative analysis of the fuzzy system is achieved . a kind of common method of qualitative analysis is proposed . it can be used to analyse the fuzzy system and describe the behavior of the system state precisely in the phase plane . the simulating results illustrated the method is feasible and available 提出了在難以精確描述控制對象數(shù)學(xué)模型的情況下,通過建立控制對象的模糊模型來確定系統(tǒng)的模糊控制規(guī)則,并對模糊系統(tǒng)進(jìn)行仿真分析的思想.利用連續(xù)系統(tǒng)定性分析的思想,提出一種對模糊系統(tǒng)進(jìn)行定性分析的可行方法,在相平面內(nèi)較為準(zhǔn)確地刻畫模糊系統(tǒng)的動(dòng)態(tài)行為.在模糊控制器的設(shè)計(jì)中,引入動(dòng)態(tài)調(diào)節(jié)因子來提高模糊控制的精度,并采用了一種便于實(shí)際運(yùn)算操作的解模糊運(yùn)算方法.在一種簡單的控制對象情況下進(jìn)行了具體的仿真計(jì)算,得到較理想的控制效果.此外對具有精確數(shù)學(xué)模型的一級倒立擺系統(tǒng)進(jìn)行此種模糊控制,亦取得很好的仿真結(jié)果