example of closed loop system with block diagram

... Nonexistence of positive solutions of an integral system with weights Zhengce Zhang School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, 710049, People’s Republic of China Email ... monotonic- ity of the positive solutions for a class of integral systems with weights. We use a new type of moving plane method introduced by Chen–Li–Ou. Our new ingredient is the use of Hardy–Littlewood–Sobolev ... decreasing with respect to some point in R N . Proof of Theorem 1.2. We show that u and v are symmetric with respect to some plane parallel x 1 = 0. Indeed, if λ 0 < 0, such as the steps of Theorem...

Ngày tải lên: 20/06/2014, 21:20

... Nonexistence of positive solutions of an integral system with weights Zhengce Zhang School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, 710049, People’s Republic of China Email ... monotonic- ity of the positive solutions for a class of integral systems with weights. We use a new type of moving plane method introduced by Chen–Li–Ou. Our new ingredient is the use of Hardy–Littlewood–Sobolev ... existence of positive entire solutions of elliptic Hamitonian systems. Comm. Partial Diff. Equ. 23(3–4), 577–599 (1998) [28] Souto, MA: A priori estimates and existence of positive solutions of nonlinear...

Ngày tải lên: 20/06/2014, 21:20

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Ngày tải lên: 15/10/2013, 16:11

... which is a consequence of exertion of the mechanical sub -system on the electromagnetic sub- system. IV. M ATHEMATICAL M ODEL OF T HE VCS Description of one type of two-mass electromagnetic ... transporting system (LCE with material). In order to achieve dynamic model of this system, we will divide the system into two sub- systems, shown in Fig. 5. Fig. 5. Simplification of the ... f res of the system is equal to mains (AC source) frequency f =50Hz. A. Phase control Fig. 7. Simulation scheme of power converter with phase control Simulation circuit with phase...

Ngày tải lên: 03/01/2014, 19:16

... variables of the coupled systems. Mechatronics Kevin Craig DC Motor / Tachometer Closed- Loop Speed Control System 17 Mechatronics Kevin Craig DC Motor / Tachometer Closed- Loop Speed Control System ... Testing of the Closed- Loop System and Comparison with Predicted Response The final stage in the control development process is to experimentally determine the performance of the final, closed- loop ... Tachometer Closed- Loop Speed Control System 24 Mechatronics DC Motor / Tachometer Closed- Loop Speed Control System 1. Introduction This case study is a dynamic system investigation of an...

Ngày tải lên: 25/01/2014, 13:20

... many of the principal procoagulant compo- nents of the system are serine proteases, regulation of the system is principally by the action of serine protease inhibitors. One major class of serine ... InhibitorNative Heparin Cofactor 2 Fig. 1. The structures of serpins controlling thrombin. The structures of AT with and without the heparin pentasaccharide bound, heparin cofactor II and cleaved ... increase the rate of interaction with target proteases. The interaction of AT with hep- arin is clearly the most understood in structural terms, although a number of elements of the conformational change...

Ngày tải lên: 20/02/2014, 02:21

... scans without X-rays did not allow an association of the area of fluorescence with the level of the lumbar spine. The Fusion of OI data with X-rays allowed an accurate anatomical localization of ... certain advantages of using a high dose of 10 mg/kg of ICG, as opposed to a lower dose of 1 mg/kg. The dose of 10 mg/ kg of ICG provided a stronger and prolonged enhance- ment of the granulation ... OI scans of specimens (Figure 5) from rats of the experimental group B showed a higher enhancement of the spine at the location of surgery (11960 ± 695) com- pared to the enhancement of the corresponding...

Ngày tải lên: 18/06/2014, 15:20

... feedback. A within-subjects ANOVA, with f actors of visual feedback condition (light block/ dark block) , tactile feedback condition (with vibrotactile feedback/without vibrotactile feedback) and ... error. Data are from two groups of subjects, one with vibrotactile feedback (N = 6), one without vibrotactile feedback (N = 6). (A) Comparison of within-subject factors of visual feedback condition ... ANOVA, with factors o f object weight (heavy object/lightweight object), visual fe edback condition (light block/ dark block) and tactile feedback condition (with vibrotactile feedback/without...

Ngày tải lên: 19/06/2014, 08:20

... that (H 2 ) r l 1 > a u 12 M 2 m 2 holds. Then system (1.3) is permanent. Proof.Letx(k)=(x 1 (k), x 2 (k)) T be any positive solution of system ( 1.3) with initial conditions (1.4), from the first equation of the system (1.3), ... (1.3) assure that the solution of system (1.3) with initial conditions (1.4) remains positive. The principle aim of this article is to study t he dynamic behaviors of system (1.3), such as permanence, ... permanent property of the system (1.3). We study globally attractive property of the system (1.3) and the periodic property of sys- tem (1.3). At last, the conclusion ends with brief remarks. Lu...

Ngày tải lên: 21/06/2014, 03:20

... 2.28 This completes the proof. 3. An Example In this section, we give an example to illustrate that 1.10 does not imply 1.9. Consider the two-species system with delays and feedback controls ... Persistent Property of a Discrete Lotka-Volterra Competitive System with Delays and Feedback Controls Xiangzeng Kong, 1, 2 Liping Chen, 1, 2 and Wensheng Yang 1, 2 1 Key Lab of Network Security ... Lotka-Volterra competitive system with delays and feedback controls. Recently, in 1 Liao et al. considered the following general nonautonomous discrete Lotka-Volterra competitive system with delays and...

Ngày tải lên: 21/06/2014, 11:20

... conclusion of Theorem 3.2 holds. This completes the proof of Theorem 3.2. In order to obtain the permanence of the component yn of system 1.3, we next consider the following single-specie system with ... survival rates. Of practical interest in ecosystem is the question of whether an ecosystem can withstand those unpredictable forces which persist for a finite period of time or not. In the language of control ... →∞ u 2  n  <M, 3.1 for any positive solution xn,yn,u 1 n,u 2 n of system 1.3. Proof. Given any solution xn,yn,u 1 n,u 2 n of system 1.3, we have Δu 1  n  1  ≤ r  n  − e 1  n  u 1  n  ,...

Ngày tải lên: 21/06/2014, 11:20

... 0, 0,  yt of System 2.1 with 2.2 is equivalent to the global attraction of prey-extinction periodic solution 0,  yt of System 2.3. So we only devote to System 2.3 with 2.4. Since re −wτ 1 < kβ km ... completes the proof. The next work is to investigate the permanence of the system 2.4. Before starting our theorem, we give the definition of permanence of system 2.4. Definition 4.2. System 2.1 ... all solutions of System 2.1 with 2.2  are uniformly ultimately bounded. The conditions of the globally attractive prey-extinction boundary periodic solution of System 2.1 with 2.2 are...

Ngày tải lên: 21/06/2014, 11:20

... probability of a DS/FH system; Impact of the number of users, the number of antenna elements M = 2, processing gain G DS = 50, the number of interferers is J 1 = 1, J 2 = 2, J 3 = 3, duty cycles of interferes ... Outage probability of a DS/FH system, impact of the duty cycle of interferers, the number of antenna elements M = 2, processing gain G DS = 50, the number of users K = 40, the number of interferers ... Outage probability of a DS/FH system; Impact of the number of interferers, the number of antenna elements M = 2, processing gain G DS = 50, the number of users K = 40, duty cycles of interferes are...

Ngày tải lên: 21/06/2014, 19:20

... 2.16. 3. Proof of the Main Theorem In this section we will prove the main result of this paper on the controllability of the linear system 2.8. But, before we will give the definition of approximate ... system, 2.8 is approximately controllable on 0,τ. Proof. We will apply Theorem 3.2 to prove the approximate controllability of system 2.8. With this purpose, we observe that B ∗ ω  B ω ,T ∗  t  z ... {P j } j≥1 two families of bounded linear operator in Z ,with{ P j } j≥1 a family of complete orthogonal projection such that A j P j  P j A j ,j≥ 1. 2.9 Define the following family of linear operators: T  t  z...

Ngày tải lên: 21/06/2014, 20:20

... period. The feature of a “peak” can be described by the mean value (with threshold of ±10% of the previous mean value), the variance before it (with threshold of ±5% of the mean of previous variance), ... by a System of Particle Filter Associated with a Neural Network Derong Liu, 1 Zhongyu Pang, 2 and Zhuo Wang 2 1 The Key Laboratory of Complex Systems and Intelligence Science, Institute of Automation, ... number of particles, we develop a novel algorithm to combine particle filters with neural networks. The strategy of backpropagation neural networks can be used to adjust particles in tail area with...

Ngày tải lên: 21/06/2014, 20:20