a variety of 多种的; 各种各样, 多种多样; 各种各样;不同种类; 各种各样的..., 种种..; 各种各样的,众多的; 一种,种种; 种类繁多的; 种种,各种; 种种,多种多样的; 种种,若干不同的
variety n. 1.变化,多样化 (opp. monotony, uniformity)。 2.(各种东西的)杂凑。 3.异种;种类;项目;【生物学】品种;变种;【语言学】异体。 4.〔主英〕杂耍表演 (= variety show)。 an improved variety 育成[改良]品种。 every variety of form 各种形式。 for a variety of reasons 因种种理由。 for variety's sake 为了不单调起见。 full of variety富于变化的,丰富多彩的。 have a great variety to choose from 有很多种类可供选择。 in a variety of ways 用种种方法。
ideal adj. 1.理想的,典型的。 2.观念的;想像的;空想的;不切实际的。 3.唯心论的;理想主义的。 an ideal place for a holiday 度假的理想场所。 ideal happiness 想像中的幸福。 n. 理想;典型;模范;空想的事物;【数学】理想子环,理想数。 beau ideal 十全十美的理想。 the I- and the Real 理想与现实。 That is only an ideal. 那仅仅是空想。 adv. -ly
The innovative ideas in this paper is to replace the linear fixed - gain pid controller for a nonlinear pid controller . based on the step response curves of conventional control system , we analyze the ideal variety of three gains in different times and construct the simulated curves of proportional , intergral and derivative gain . the controllers has considered all sorts of imperceptible factors affecting the servo performances in a lpmsm servo system , which include the parametric uncertainties brought by the changes of the mobile mass , the dynamitic performance of the system and the size of input . to solve the problem of so many unknown parameters , we use transmit arithmetic to find the parameters which are fit for the system . to keep the robust and stable performance 本文的创新之处在于,将传统的固定增益的pid控制器用非线性pid控制器来代替,并在此基础上,就一般控制系统的阶跃响应曲线,分析了在不同响应时间阶段pid的三个增益调节参数的理想变化情况,并根据这些理想变化,分别给出了比例、积分、微分增益参数的一种连续的非线性拟和函数。在分析双位置环时,仔细考虑了能使系统性能变坏的各种因素,如系统的动态性能及控制出入能量的大小等等。