本文選題：網(wǎng)絡(luò)控制系統(tǒng) + 時(shí)變時(shí)延��； 參考：《哈爾濱理工大學(xué)》2017年碩士論文

【摘要】：網(wǎng)絡(luò)控制系統(tǒng)是經(jīng)網(wǎng)絡(luò)中介連接傳感器、控制器、執(zhí)行器并進(jìn)行信號(hào)傳輸?shù)膶?shí)時(shí)反饋系統(tǒng),它是一種可以使在一定的區(qū)域內(nèi)地理位置不同的用戶之間實(shí)現(xiàn)資源共享的遠(yuǎn)程監(jiān)控系統(tǒng)。由于各個(gè)環(huán)節(jié)中通信網(wǎng)絡(luò)的加入使得信息傳輸過程中受到帶寬限制以及網(wǎng)絡(luò)負(fù)載變換等因素影響,發(fā)送的數(shù)據(jù)會(huì)隨時(shí)間變化出現(xiàn)延遲甚至丟失。時(shí)變時(shí)延的存在,會(huì)使系統(tǒng)的穩(wěn)定范圍變小,降低系統(tǒng)的動(dòng)態(tài)性能,有時(shí)會(huì)造成系統(tǒng)狀態(tài)發(fā)散。穩(wěn)定性是控制系統(tǒng)設(shè)計(jì)的基本要求,設(shè)計(jì)相應(yīng)的控制器使得系統(tǒng)滿足一定的性能指標(biāo)亦是權(quán)衡系統(tǒng)優(yōu)良的首要環(huán)節(jié)。因此,本文研究存在隨機(jī)時(shí)變時(shí)延的網(wǎng)絡(luò)系統(tǒng)的時(shí)滯依賴漸近穩(wěn)定準(zhǔn)則和反饋控制器設(shè)計(jì)方案,具備非常重要的理論價(jià)值和實(shí)際價(jià)值。其主要研究?jī)?nèi)容如下:針對(duì)一類具有區(qū)間時(shí)變時(shí)延的Markov隨機(jī)跳變系統(tǒng),研究其穩(wěn)定性問題�；谝环N新型的二次凸不等式邊界方法,采用含交錯(cuò)項(xiàng)和二次項(xiàng)公式與高次常函數(shù)乘積的新型L-K泛函,選用含有較多項(xiàng)獨(dú)立增廣變量,利用交叉項(xiàng)估計(jì)方法,推導(dǎo)較少保守性的系統(tǒng)時(shí)滯依賴隨機(jī)漸近穩(wěn)定的充分條件。利用數(shù)值例子證明所提理論的可用性。針對(duì)非理想狀況下含丟包和隨機(jī)時(shí)延的網(wǎng)絡(luò)系統(tǒng),研究其穩(wěn)定性和狀態(tài)反饋控制器設(shè)計(jì)問題。基于定時(shí)觸發(fā)信號(hào)傳輸方式下引起的網(wǎng)絡(luò)時(shí)變時(shí)延,采用全新式L-K泛函和自由權(quán)矩陣,借助時(shí)延系統(tǒng)理論,利用二次凸組合技巧,推導(dǎo)閉環(huán)系統(tǒng)穩(wěn)定性的充分條件和H_∞狀態(tài)反饋控制器的設(shè)計(jì)步驟。并通過比較最大允許時(shí)延上界驗(yàn)證所提方法的優(yōu)勢(shì)。針對(duì)存在Markov隨機(jī)跳變時(shí)變時(shí)延的網(wǎng)絡(luò)系統(tǒng),研究存在有界系統(tǒng)噪聲的事件觸發(fā)方式的量化控制問題�；诙瓮辜夹g(shù)處理積分項(xiàng)和二次項(xiàng)的新型L-K泛函,借助于隨機(jī)切換系統(tǒng)理論,采用對(duì)數(shù)量化器,推導(dǎo)出控制器的設(shè)計(jì)方法,并通過數(shù)值例子仿真驗(yàn)證新設(shè)計(jì)方法的有效性。
[Abstract]:The network control system is a real-time feedback system that connects sensors, controllers, actuators and signals through a network intermediary. It is a remote monitoring system which can realize resource sharing among users with different geographical location in a certain area. Due to the addition of communication network in each link, the information transmission process is affected by bandwidth constraints and network load transformation, so the data transmitted will be delayed or even lost with the change of time. The existence of time-varying delay will reduce the stable range of the system, reduce the dynamic performance of the system, and sometimes cause the state divergence of the system. Stability is the basic requirement of the control system design. The design of the corresponding controller to make the system meet certain performance indicators is also the first step to weigh the system excellence. Therefore, in this paper, we study the delay-dependent asymptotic stability criterion and feedback controller design scheme for network systems with stochastic time-varying delay, which has very important theoretical and practical value. The main research contents are as follows: for a class of Markov stochastic jump systems with interval time-varying delay, the stability problem is studied. Based on a new boundary method of quadratic convex inequality, a new L-K functional with the product of interlaced terms and quadratic formulas and higher order constant function is adopted. Sufficient conditions for stochastic asymptotic stability of delay dependent systems with less conservatism are derived. A numerical example is used to prove the availability of the proposed theory. In this paper, the stability and state feedback controller design of network systems with packet loss and random delay in non-ideal conditions are studied. Based on the time-varying delay caused by the timing trigger signal transmission mode, a new L-K functional and freedom matrix are adopted, and the theory of delay system is used to make use of the technique of quadratic convex combination. The sufficient conditions for the stability of the closed-loop system and the design steps of the H _ 鈭，

本文編號(hào)：1951665