• <tr id="yyy80"></tr>
  • <sup id="yyy80"></sup>
  • <tfoot id="yyy80"><noscript id="yyy80"></noscript></tfoot>
  • 99热精品在线国产_美女午夜性视频免费_国产精品国产高清国产av_av欧美777_自拍偷自拍亚洲精品老妇_亚洲熟女精品中文字幕_www日本黄色视频网_国产精品野战在线观看 ?

    Distributed Asymptotic Consensus in Directed Networks of Nonaffine Systems With Nonvanishing Disturbance

    2021-06-18 03:28:18QinglingWangandChangyinSun
    IEEE/CAA Journal of Automatica Sinica 2021年6期

    Qingling Wang, and Changyin Sun,

    Abstract—In this paper the distributed asymptotic consensus problem is addressed for a group of high-order nonaffine agents with uncertain dynamics, nonvanishing disturbances and unknown control directions under directed networks. A class of auxiliary variables are first introduced which forms second-order filters and induces all measurable signals of agents’ states. In view of this property, a distributed robust integral of the sign of the error (DRISE) design combined with the Nussbaum-type function is presented that guarantees not only the desired asymptotic consensus, but also the uniform boundedness of all closed-loop variables. Compared with the traditional sliding mode control(SMC) technique, the main feature of our approach is that the integral operation in the proposed control algorithm is designed to be adopted in a continuous manner and ensures less chattering behavior. Simulation results for a group of Duffing-Holmes chaotic systems are employed to verify our theoretical analysis.

    I. INTRODUCTION

    THE cooperative control of multi-agent systems (MASs)has received a large amount of attentions in the last several decades, where the design of distributed control algorithms for consensus of MASs has been the fundamental task due to its considerable applications [1]-[6]. Besides,consensus control for nonlinear MASs is technically important since the unknown nonlinear dynamics usually exist in practical applications, where many important works have been reported [7]-[13].

    Recently, the researchers have mainly focused on the distributed consensus problem of nonaffine systems, and several control algorithms have been developed [14]-[17]. A distributed adaptive consensus tracking algorithm was proposed for the MASs in nonaffine pure-feedback form by using the backstepping technique, neural networks (NNs), and the dynamic surface control method in [14]. In [15], a class of distributed consensus tracking algorithms with the continuous control action were developed for networked nonaffine MASs to ensure that the tracking error can converge to a small region within a prescribed finite time. In [16], by using output constrained feedback, a distributed consensus algorithm was proposed for nonaffine MASs subject to partially unknown control directions to drive the agents’ states to the region of predefined constraints. An adaptive filtered backstepping control method is employed to achieve the cooperative tracking of uncertain nonaffine MASs with input nonlinearities and unknown control directions in [17]. It is worth noting that most existing results have widely utilized the technique of NNs to cope with the unknown system dynamics,since NNs have the ability of approximating smooth,unknown nonlinear dynamics. However, NNs based approaches mainly focus on the process of choosing units and neurons for the NNs, which increases the burden in adjusting parameters. Furthermore, it is known that NNs can not approximate nonlinear dynamics that depend on the time variable.

    Another challenge for consensus algorithms is the distributed control design of MASs with nonvanishing disturbance, where it requires the use of an advanced robust control scheme. When addressing nonvanishing disturbances,the NNs based approaches are not capable of providing satisfactory performance, such as the asymptotic convergence of system states. Therefore, disturbance observers should be designed to reject the unknown disturbance [18], [19]. As an alternative approach, the sliding mode control (SMC) method is well known for its disturbance rejection property [20].Sliding mode observers and a distributed fuzzy logic control method were adopted to approximate unknown dynamics and drive nonlinear MASs to consensus in [21]. Event-triggered adaptive fuzzy controllers with SMC were employed in [22].One problem of the aforementioned works is that by using the SMC technique, the high-frequency chattering phenomenon was not addressed [23], which causes wear and tear to the actuator and might lead to the possibility of system destabilization. The better solution for alleviating the chattering phenomenon, while maintaining the invariance property of the sliding mode against uncertainties involves the use of high-order SMC [24]-[26]. However, the sliding surface and the adaptive estimation error are shown to be uniformly ultimate bound, and the above designed approaches are based on the dynamical systems with known control directions.

    From the above literature, it can be observed that the issues of uncertain dynamics, nonvanishing disturbance, unknown control directions, and the reduction in the chattering for MASs have not been explored all together in a single paper. In this paper we mainly concentrate on the control design of nonaffine agents with a new asymptotically consensus algorithm that can deal with nonlinear dynamics, nonvanishing disturbance, and unknown control directions. As in most of the related works, we first transform the nonaffine agent into the affine dynamics, and then we take its first-order time derivative to raise the order of the dynamics where the derivative of control input for each agent contains affinely.Next, we incorporate the robust integral of the sign of the error (RISE) scheme [27] into the proposed consensus algorithms to cope with the problem of novanishing disturbance in each agent. Furthermore, a mechanism is designed to cope with unknown control directions in each agent. Inspired by the work in [28], the Nussbaum-type function is employed to be included in the RISE scheme.Therefore, in this paper a distributed robust integral of the sign of the error (DRISE) structure is developed, which to the authors’ best knowledge has not been studied, for the highorder nonaffine agents with nonvanishing disturbance. The main contributions of the paper can be summarized as follows:

    1) This is the first work to consider the leaderless consensus problem of high-order nonaffine agents with uncertain dynamics, nonvanishing disturbance, and unknown control directions, in contrast to existing results for consensus of nonaffine agents.

    2) A new DRISE design combined with the Nussbaum-type function is first proposed to guarantee not only the desired asymptotic consensus, but also the uniform boundedness of all closed-loop variables.

    3) Compared to the related literature [16], where the control directions are identical and partially known for agents with undirected graphs, in this work the unknown control directions can be nonidentical for agents with a directed graph having a spanning tree. Furthermore, different from existing results on consensus of agents with nonvanishing disturbance,in this work the integral operation in the proposed control algorithm is adopted to incorporate in a continuous manner and ensure less chattering behavior.

    We organize the rest of this study as follows. Preliminaries and problem formulation are described in Section II. In Section III, auxiliary variables and the technical development for open-loop dynamics are presented, and a new control algorithm with the Nussbaum-type function is proposed.Then, the main results on asymptotic consensus are illustrated.Simulation results on Duffing-Holmes chaotic systems are presented in Section IV. Finally, Section V concludes this work with some remarks.

    II. PRELIMINARIES AND PROBLEM FORMULATION

    Notations:L∞denotes the space of bounded function on[0,∞). |·| represents the absolute value, ‖·‖ represents the Euclidean norm of a vector, and ‖·‖∞r(nóng)epresents the infinity norm. The notation sgn (·) is the signum function.

    A. Preliminaries

    Definition 1 [29]:χ(·) is regarded as the Nussbaum-type function when it has

    Definition 2 [30]:The definition of uniformly quasistrongly δ-connected graphs is that for a constantT>0 , the δarcs of G(t) induce a quasi-strongly connected graph in the interval [t,t+T) with anyt≥0.

    Remark 2:It is shown [28] that the directed graph having a spanning tree can be regarded as a special case of the uniformly quasi-strongly δ-connected graphs.

    Lemma 1 [30]:For a group of single-integrator dynamics,where thei-th one of the dynamics are

    B. Problem Formulation

    We considerNnonaffine agents of the form:

    The control objective is to design distributed control algorithms for agents (6) under Assumptions 1-3 and communication topology described by directed graphs in order to achieve asymptotic consensus in the sense that

    for all agents withm=1,2,...,n-1,i,k∈{1,2,···,N}.Furthermore, all signals of the closed-loop systems are bounded.

    III. MAIN RESULTS

    A. Auxiliary Variables and the Technical Development

    In this subsection, auxiliary variables will be introduced to facilitate the algorithms design, and the technical development for open-loop dynamics will be illustrated. The following lemma will be first introduced to derive the main technical development:

    B. Distributed Control Algorithms Design

    According to Assumption 2, since the sign of?f(,ui)/?uiin (26) is unknown, a Nussbaum-type function should be employed to deal with the unknown control directions. Thus,in this subsection, a new control algorithm with the Nussbaum-type function will be presented to cope with the nonlinear affine dynamics and unknown control directions that achieves asymptotic consensus.

    In this subsection, the virtual control inputvi(t) is proposed by

    in which each term is available for calculatingpi(t). From(16), (28), and (29), we know that the control inputui(t) can be implemented since all the terms are measurable signals.

    In view of (26) and (28), the closed-loop system is

    C. Boundedness and Asymptotic Consensus Results

    In this subsection, we will prove that if the control algorithms are designed as described in the previous subsections, then all closed-loop variables remain bounded and asymptotic consensus is achieved.

    The main result is summarized as follows:

    Theorem 1:Suppose Assumptions 1-3 hold. Considering a group ofNnonaffine agents in the form (6) with the proposed control algorithms (28), (29), and (17) under the communication topology described by a directed graph having a spanning tree, all closed-loop variables are uniformly ultimately bounded and semiglobal asymptotic consensus is achieved providing that the following condition is satisfied:

    where ?i1and ?i2are two parameters defined in Remark 4.Furthermore, all signals of the closed-loop systems are bounded.

    Proof:Let the Lyapunov function candidate be

    In view of (31) and Remark 4, since ψi>2(?i1+?i2)>?i1,we can obtain that 0 <ψi|φis(t)|-Eidφis(t)≤(ψi+?i1)|φis(t)|.Thus, it can be proved thatVi(t)>0 is upper bounded as

    whereei(t) is defined in Remark 5, andVi(t) is continuous,differentiable everywhere except on the setΦ={ei(t)|φis(t)=0}. Since the Lyapunov function is not directly employed, we use the tool in Lemma 2, that is

    where ?V(ei(t),t) is defined as

    To simplify the analysis, the above ?V(ei(t),t) can be rewritten as

    Therefore, we have

    Therefore, the region of attraction can be calculated as

    IV. SIMULATION EXAMPLES

    In this section, a group of four Duffing-Holmes chaotic systems is considered. The agent model is adopted from [18],and the dynamics of each agent are described as follows:

    Fig. 1. The communication graph having a spanning tree.

    The simulation results are illustrated in Figs. 2-4. It is observed from Fig. 2 that asymptotic consensus is obtained.Fig. 3 shows the performance of control input. At the beginning of the first 10 s, it is shown that the control input contains some frequent oscillations when the Nussbaum-type function works and the directions of the control inputs are determined. Furthermore, it is seen that the values ofui(t) are within a reasonable range. It is also observed from Fig. 3 that after the first 10 s the chattering phenomenon exists. The reason is that the proposed algorithm in (28) has discontinuous terms, and its integral implies a continuous and chattering control input. As we know, although the control algorithms are smooth, the existence of chattering phenomenon is very common, and the robust control algorithms may be able to eliminate the chattering phenomenon.

    Fig. 2. Time responses of the agent states xi(t) and x˙i(t) (1 ≤i ≤4).

    Fig. 3. Time responses of the control inputs u i(t) (1 ≤i ≤4).

    Fig. 4. Time responses of the parameters pi(t) (1 ≤i ≤4).

    V. CONCLUSIONS

    In this paper, we designed asymptotic consensus algorithms for networked nonaffine systems with nonvanishing disturbance under directed graphs. By using the DRISE design with the Nussbaum-type function, a new class of continuous algorithms with disturbance rejection has been developed. The corresponding asymptotic consensus results relax the chattering phenomenon since the proposed control algorithms are continuous. Future research directions may focus on designs of algorithms for output feedback systems, eventtriggered control systems, and time-delay systems.

    熟女av电影| 校园人妻丝袜中文字幕| 99热国产这里只有精品6| 中文欧美无线码| 亚洲精品乱码久久久久久按摩| 在线天堂最新版资源| 99视频精品全部免费 在线| 三级经典国产精品| 国产成人一区二区在线| 最近中文字幕高清免费大全6| 国产精品人妻久久久影院| 亚洲自拍偷在线| 国产黄色免费在线视频| 精品熟女少妇av免费看| 欧美激情久久久久久爽电影| 国产精品人妻久久久久久| 99re6热这里在线精品视频| 国产欧美日韩精品一区二区| 国产精品一区www在线观看| 下体分泌物呈黄色| 热99国产精品久久久久久7| 欧美另类一区| 777米奇影视久久| 草草在线视频免费看| 18禁裸乳无遮挡动漫免费视频 | av女优亚洲男人天堂| 亚洲精品一区蜜桃| 最近中文字幕2019免费版| 五月伊人婷婷丁香| 亚洲精品久久午夜乱码| 狠狠精品人妻久久久久久综合| 免费av观看视频| 中文天堂在线官网| 亚洲精品色激情综合| 国语对白做爰xxxⅹ性视频网站| 免费黄网站久久成人精品| www.av在线官网国产| 免费观看a级毛片全部| 久久影院123| 亚洲人与动物交配视频| 熟女av电影| 亚洲精品日韩在线中文字幕| 嫩草影院精品99| 最近2019中文字幕mv第一页| 国产成人一区二区在线| 精品国产乱码久久久久久小说| 观看美女的网站| 三级国产精品片| 免费av观看视频| 午夜福利高清视频| 久久人人爽av亚洲精品天堂 | 国产在线男女| 汤姆久久久久久久影院中文字幕| 在线观看美女被高潮喷水网站| 建设人人有责人人尽责人人享有的 | 国产综合精华液| 国产乱来视频区| 赤兔流量卡办理| 91久久精品电影网| 久久影院123| 美女高潮的动态| 色5月婷婷丁香| 国产亚洲5aaaaa淫片| 亚洲精品国产色婷婷电影| 最近2019中文字幕mv第一页| 亚洲,欧美,日韩| 国产一区二区三区av在线| 一级二级三级毛片免费看| 人妻少妇偷人精品九色| 熟女av电影| 久久99精品国语久久久| 免费观看性生交大片5| 美女视频免费永久观看网站| 岛国毛片在线播放| 亚洲国产精品专区欧美| 久久国内精品自在自线图片| 夜夜爽夜夜爽视频| freevideosex欧美| 国产视频首页在线观看| 青春草国产在线视频| 尾随美女入室| 亚洲欧美日韩无卡精品| 性插视频无遮挡在线免费观看| 精品99又大又爽又粗少妇毛片| 白带黄色成豆腐渣| 免费不卡的大黄色大毛片视频在线观看| 日韩免费高清中文字幕av| 涩涩av久久男人的天堂| 两个人的视频大全免费| 99九九线精品视频在线观看视频| 成人亚洲精品av一区二区| 欧美激情久久久久久爽电影| 五月玫瑰六月丁香| 国产美女午夜福利| 亚洲欧美日韩东京热| 哪个播放器可以免费观看大片| 免费观看无遮挡的男女| 99热这里只有精品一区| 成人亚洲欧美一区二区av| 美女国产视频在线观看| 国产精品99久久99久久久不卡 | 亚洲国产色片| 国产探花在线观看一区二区| 亚洲自拍偷在线| 校园人妻丝袜中文字幕| 嘟嘟电影网在线观看| 黄色配什么色好看| 亚洲av福利一区| av女优亚洲男人天堂| 午夜视频国产福利| 26uuu在线亚洲综合色| 亚洲国产欧美人成| 亚洲精品中文字幕在线视频 | 欧美 日韩 精品 国产| 免费看光身美女| 亚洲成人精品中文字幕电影| 黄色怎么调成土黄色| 成年av动漫网址| 欧美日韩综合久久久久久| 国产精品av视频在线免费观看| 一个人观看的视频www高清免费观看| 日本三级黄在线观看| 国产熟女欧美一区二区| 日韩强制内射视频| 欧美成人午夜免费资源| 国产av码专区亚洲av| av又黄又爽大尺度在线免费看| 男人和女人高潮做爰伦理| 亚洲国产精品国产精品| a级一级毛片免费在线观看| 网址你懂的国产日韩在线| 全区人妻精品视频| 日韩一本色道免费dvd| 在线看a的网站| kizo精华| 亚洲精品一二三| 欧美区成人在线视频| 日本与韩国留学比较| 国产精品国产三级国产av玫瑰| 成人漫画全彩无遮挡| 亚洲精品影视一区二区三区av| 九九爱精品视频在线观看| 看免费成人av毛片| 神马国产精品三级电影在线观看| 成人国产麻豆网| 一级二级三级毛片免费看| 日韩亚洲欧美综合| 国产精品久久久久久久久免| 青春草视频在线免费观看| 亚洲成色77777| 成人黄色视频免费在线看| 午夜激情久久久久久久| 日韩欧美精品免费久久| 蜜桃久久精品国产亚洲av| 国产熟女欧美一区二区| 视频中文字幕在线观看| 乱码一卡2卡4卡精品| 永久免费av网站大全| 青春草亚洲视频在线观看| 特大巨黑吊av在线直播| 精品国产一区二区三区久久久樱花 | 日韩av不卡免费在线播放| 国产精品女同一区二区软件| 观看免费一级毛片| 精华霜和精华液先用哪个| 插阴视频在线观看视频| 久久久久久久久久成人| 国产av不卡久久| 少妇人妻精品综合一区二区| 欧美日韩综合久久久久久| 久久久久久国产a免费观看| 成人二区视频| 日韩欧美 国产精品| 国产综合精华液| 中文字幕人妻熟人妻熟丝袜美| 亚洲av日韩在线播放| 欧美一区二区亚洲| 亚洲av成人精品一区久久| 国产极品天堂在线| 99久久精品国产国产毛片| 免费看不卡的av| 亚洲欧洲国产日韩| 国产片特级美女逼逼视频| 中文资源天堂在线| 国产精品av视频在线免费观看| 亚洲国产色片| 一个人看的www免费观看视频| 久久久国产一区二区| 麻豆精品久久久久久蜜桃| 一个人看的www免费观看视频| 日韩av免费高清视频| 成人鲁丝片一二三区免费| 一个人看的www免费观看视频| 亚洲内射少妇av| 女的被弄到高潮叫床怎么办| 22中文网久久字幕| 亚洲色图综合在线观看| 国产午夜精品一二区理论片| 我的女老师完整版在线观看| 91精品国产九色| 天堂中文最新版在线下载 | 成人综合一区亚洲| 99久久精品热视频| 91精品国产九色| 三级国产精品欧美在线观看| 亚洲色图综合在线观看| 97超碰精品成人国产| 少妇人妻 视频| 禁无遮挡网站| 日本一本二区三区精品| 免费av不卡在线播放| 日本与韩国留学比较| 中国国产av一级| 久久精品久久久久久久性| a级一级毛片免费在线观看| 成年女人看的毛片在线观看| 18禁裸乳无遮挡动漫免费视频 | 最近中文字幕2019免费版| 亚洲一级一片aⅴ在线观看| 六月丁香七月| av在线app专区| 欧美人与善性xxx| 菩萨蛮人人尽说江南好唐韦庄| 五月天丁香电影| 欧美老熟妇乱子伦牲交| 亚洲成人中文字幕在线播放| 久久精品综合一区二区三区| 秋霞在线观看毛片| 国产精品人妻久久久久久| av.在线天堂| 亚洲av欧美aⅴ国产| 亚洲av福利一区| 五月天丁香电影| 男人添女人高潮全过程视频| 寂寞人妻少妇视频99o| 免费不卡的大黄色大毛片视频在线观看| 久久久久九九精品影院| 新久久久久国产一级毛片| 插逼视频在线观看| 少妇人妻 视频| 97热精品久久久久久| 国产 一区 欧美 日韩| 精品熟女少妇av免费看| 美女国产视频在线观看| 午夜老司机福利剧场| 亚洲av不卡在线观看| 欧美变态另类bdsm刘玥| 国产女主播在线喷水免费视频网站| 七月丁香在线播放| 一二三四中文在线观看免费高清| 亚洲av不卡在线观看| 国产精品99久久久久久久久| 国产精品无大码| 天美传媒精品一区二区| 一级av片app| 亚洲最大成人中文| 亚洲精品成人久久久久久| 国产av国产精品国产| 别揉我奶头 嗯啊视频| 看十八女毛片水多多多| 亚洲国产av新网站| 免费观看无遮挡的男女| 亚洲图色成人| 看免费成人av毛片| 亚洲综合色惰| 国产精品伦人一区二区| 2021天堂中文幕一二区在线观| 亚洲四区av| 黄色一级大片看看| 久久人人爽av亚洲精品天堂 | 制服丝袜香蕉在线| 18禁裸乳无遮挡免费网站照片| 亚洲av中文字字幕乱码综合| 亚洲欧美日韩无卡精品| 午夜激情福利司机影院| 大话2 男鬼变身卡| 亚洲欧美清纯卡通| 国产高清不卡午夜福利| 亚洲欧洲日产国产| 国产精品伦人一区二区| 国产精品偷伦视频观看了| 嫩草影院新地址| 久久精品国产a三级三级三级| 国产精品福利在线免费观看| 麻豆乱淫一区二区| 欧美精品一区二区大全| 国产亚洲av嫩草精品影院| 国产探花极品一区二区| 一级毛片电影观看| 成人欧美大片| 又粗又硬又长又爽又黄的视频| 蜜桃久久精品国产亚洲av| 街头女战士在线观看网站| 久久久久网色| av在线蜜桃| 亚洲国产最新在线播放| 成人免费观看视频高清| 女人十人毛片免费观看3o分钟| 日韩在线高清观看一区二区三区| 亚洲av福利一区| 伊人久久国产一区二区| 一区二区av电影网| 韩国av在线不卡| 纵有疾风起免费观看全集完整版| 亚洲最大成人手机在线| 国产av码专区亚洲av| 午夜福利视频精品| 成人免费观看视频高清| 国产高清有码在线观看视频| 精品少妇黑人巨大在线播放| 午夜免费鲁丝| 麻豆成人av视频| 成人特级av手机在线观看| 男人添女人高潮全过程视频| 又粗又硬又长又爽又黄的视频| 涩涩av久久男人的天堂| 亚洲国产av新网站| 亚洲精品一区蜜桃| www.色视频.com| 国产欧美日韩一区二区三区在线 | 国产91av在线免费观看| 26uuu在线亚洲综合色| 性色av一级| 国内少妇人妻偷人精品xxx网站| 日韩免费高清中文字幕av| 久久女婷五月综合色啪小说 | 免费av观看视频| 有码 亚洲区| 日韩视频在线欧美| 亚州av有码| 亚洲国产精品国产精品| 久久久久久伊人网av| 高清毛片免费看| 精品国产乱码久久久久久小说| 成人鲁丝片一二三区免费| 久久久午夜欧美精品| 简卡轻食公司| 久久久亚洲精品成人影院| 五月天丁香电影| 亚洲电影在线观看av| 亚洲高清免费不卡视频| av福利片在线观看| 国模一区二区三区四区视频| 亚洲成人av在线免费| 亚洲高清免费不卡视频| 最近中文字幕2019免费版| 天天躁日日操中文字幕| 亚洲av二区三区四区| 国产免费视频播放在线视频| 亚洲av二区三区四区| 色播亚洲综合网| 黄色一级大片看看| 欧美成人a在线观看| 日韩,欧美,国产一区二区三区| 中国国产av一级| 18+在线观看网站| 国产一区二区亚洲精品在线观看| 国产在线男女| 听说在线观看完整版免费高清| 国产成人午夜福利电影在线观看| 精品一区在线观看国产| 亚洲欧美成人精品一区二区| 欧美另类一区| 国产在线男女| 欧美性感艳星| 亚洲最大成人中文| 久久韩国三级中文字幕| 亚洲av二区三区四区| 天天躁日日操中文字幕| 国产av码专区亚洲av| 国语对白做爰xxxⅹ性视频网站| 久久久久久久久久人人人人人人| 嫩草影院入口| 久久久久久久久久久免费av| 一区二区三区免费毛片| 看十八女毛片水多多多| 美女内射精品一级片tv| 亚洲国产高清在线一区二区三| 国模一区二区三区四区视频| 成人亚洲欧美一区二区av| av国产久精品久网站免费入址| h日本视频在线播放| 六月丁香七月| 欧美三级亚洲精品| 成年人午夜在线观看视频| 午夜福利网站1000一区二区三区| 黄色视频在线播放观看不卡| 日日啪夜夜撸| 超碰97精品在线观看| 国产 一区精品| 日韩一区二区三区影片| 97人妻精品一区二区三区麻豆| 国产精品伦人一区二区| 搡女人真爽免费视频火全软件| 熟妇人妻不卡中文字幕| 精品一区二区免费观看| 国产 一区 欧美 日韩| 各种免费的搞黄视频| 一级爰片在线观看| 精品久久国产蜜桃| 色5月婷婷丁香| 色视频在线一区二区三区| 亚洲,一卡二卡三卡| 大香蕉久久网| 一本久久精品| 国内精品美女久久久久久| 亚洲精品日本国产第一区| 国产爱豆传媒在线观看| 日韩一区二区三区影片| 国产一区二区三区av在线| 久久久久久久大尺度免费视频| 3wmmmm亚洲av在线观看| 久久精品国产亚洲av天美| 久久久成人免费电影| av黄色大香蕉| 啦啦啦在线观看免费高清www| 黄色欧美视频在线观看| 国产精品爽爽va在线观看网站| 欧美日本视频| 一区二区三区四区激情视频| 欧美激情国产日韩精品一区| 一二三四中文在线观看免费高清| 国产有黄有色有爽视频| 国产 精品1| 神马国产精品三级电影在线观看| 亚洲精品456在线播放app| 国产一区二区在线观看日韩| 亚洲天堂国产精品一区在线| 大片电影免费在线观看免费| 亚洲欧美成人精品一区二区| 综合色丁香网| 夫妻性生交免费视频一级片| 一区二区三区乱码不卡18| 午夜福利在线观看免费完整高清在| 老司机影院成人| 亚洲精品视频女| 免费看av在线观看网站| 99久久精品热视频| 青春草视频在线免费观看| 综合色av麻豆| 成人高潮视频无遮挡免费网站| 欧美激情在线99| 国产高清不卡午夜福利| 男人爽女人下面视频在线观看| 国产爱豆传媒在线观看| 男人狂女人下面高潮的视频| 亚洲伊人久久精品综合| 免费少妇av软件| 成人特级av手机在线观看| 久久久久久久久久成人| av国产久精品久网站免费入址| 全区人妻精品视频| 久久久久国产精品人妻一区二区| 欧美日韩视频精品一区| 99久久人妻综合| 18禁裸乳无遮挡动漫免费视频 | 大片电影免费在线观看免费| 真实男女啪啪啪动态图| 久久久久久久久大av| 蜜桃久久精品国产亚洲av| 街头女战士在线观看网站| 国产视频内射| 深夜a级毛片| 如何舔出高潮| 日韩三级伦理在线观看| 亚洲欧美成人精品一区二区| 久久韩国三级中文字幕| 天堂中文最新版在线下载 | 男人添女人高潮全过程视频| 一级a做视频免费观看| 人人妻人人澡人人爽人人夜夜| 大码成人一级视频| 久久亚洲国产成人精品v| 青青草视频在线视频观看| 网址你懂的国产日韩在线| 一本一本综合久久| 日产精品乱码卡一卡2卡三| 久久久久久久大尺度免费视频| 国产精品一及| 亚洲av中文字字幕乱码综合| 亚洲色图综合在线观看| 亚洲第一区二区三区不卡| 少妇 在线观看| 3wmmmm亚洲av在线观看| 久久久a久久爽久久v久久| 丰满乱子伦码专区| 精品酒店卫生间| 国内精品宾馆在线| 亚洲自拍偷在线| 尤物成人国产欧美一区二区三区| 久久久久久国产a免费观看| 亚洲最大成人中文| 国产精品熟女久久久久浪| 亚洲av中文av极速乱| 久久久久久久国产电影| 国产精品人妻久久久影院| 日韩成人伦理影院| 性插视频无遮挡在线免费观看| 天堂中文最新版在线下载 | 18+在线观看网站| 69av精品久久久久久| 日本-黄色视频高清免费观看| 狂野欧美白嫩少妇大欣赏| 少妇人妻精品综合一区二区| 午夜福利网站1000一区二区三区| 免费看日本二区| 国产精品久久久久久精品电影| 99久久精品一区二区三区| 啦啦啦中文免费视频观看日本| 欧美日韩综合久久久久久| 久久精品夜色国产| 哪个播放器可以免费观看大片| av在线app专区| 激情五月婷婷亚洲| 三级经典国产精品| 亚洲av免费高清在线观看| 亚洲精品乱码久久久久久按摩| 婷婷色av中文字幕| 亚洲av免费在线观看| 亚洲无线观看免费| 97热精品久久久久久| 午夜日本视频在线| 亚洲国产精品国产精品| 麻豆国产97在线/欧美| 免费看光身美女| av国产久精品久网站免费入址| 欧美精品一区二区大全| 免费看av在线观看网站| 亚州av有码| 国产精品99久久久久久久久| 性色avwww在线观看| 日产精品乱码卡一卡2卡三| 日日啪夜夜爽| 一级毛片电影观看| 国产男女超爽视频在线观看| 最近2019中文字幕mv第一页| 国产伦精品一区二区三区视频9| 久久久久久久亚洲中文字幕| 亚洲av一区综合| 肉色欧美久久久久久久蜜桃 | 街头女战士在线观看网站| 极品少妇高潮喷水抽搐| 欧美少妇被猛烈插入视频| 色综合色国产| 好男人在线观看高清免费视频| 精品人妻偷拍中文字幕| 晚上一个人看的免费电影| 国产国拍精品亚洲av在线观看| 国产毛片在线视频| 日本一二三区视频观看| 久久国产乱子免费精品| 日韩电影二区| 国产av国产精品国产| 成人毛片a级毛片在线播放| 18禁动态无遮挡网站| 精品午夜福利在线看| 十八禁网站网址无遮挡 | 一二三四中文在线观看免费高清| 在线a可以看的网站| 99久久精品国产国产毛片| 寂寞人妻少妇视频99o| 国产亚洲av嫩草精品影院| 成年女人看的毛片在线观看| 国产精品熟女久久久久浪| 日日啪夜夜撸| 18禁动态无遮挡网站| 国产精品成人在线| 精品人妻熟女av久视频| 夫妻性生交免费视频一级片| 能在线免费看毛片的网站| 久久ye,这里只有精品| 久久久午夜欧美精品| 国产精品一区二区在线观看99| 大码成人一级视频| av在线亚洲专区| 久久久久九九精品影院| 男的添女的下面高潮视频| 91精品国产九色| 国产成年人精品一区二区| 尾随美女入室| 高清欧美精品videossex| 中文欧美无线码| 国产色爽女视频免费观看| 在线观看美女被高潮喷水网站| 久久女婷五月综合色啪小说 | 亚洲精品成人av观看孕妇| 亚洲国产av新网站| 日日摸夜夜添夜夜添av毛片| 六月丁香七月| 亚洲真实伦在线观看| 国产一区有黄有色的免费视频| 舔av片在线| 午夜福利在线观看免费完整高清在| 三级国产精品片| 国产精品人妻久久久影院| 国产探花极品一区二区| 在现免费观看毛片| 精品久久久久久久久亚洲| 男女那种视频在线观看| 日韩成人av中文字幕在线观看| 日本黄大片高清| 99热这里只有精品一区| 激情 狠狠 欧美| 欧美三级亚洲精品| 在线亚洲精品国产二区图片欧美 | 免费av观看视频| 午夜福利视频1000在线观看| 久久国产乱子免费精品| 日韩一区二区视频免费看| 精品久久久久久久末码| 国产亚洲5aaaaa淫片| 免费少妇av软件| 天天躁日日操中文字幕| 日本与韩国留学比较| 联通29元200g的流量卡|