spectra single degree of freedom linear undamped systems

... Cartesian Tab • In the Number of Grid Spaces area type in the X direction edit box • In the Number of Grid Spaces area type in the Y direction edit box • In the Number of Grid Spaces area type in ... menu select Response Spectrum Cases… to display the Define Response Spectra dialog box 15 In this dialog box: • Click the Add New Spectra button to display the Response Spectrum Case Data dialog ... spectrum is run in only one direction In the Input Response Spectra area select UBC94S1 from the U1 Function dropdown box In the Input Response Spectra area type 386.4 in the U1 Scale factor edit box...

Ngày tải lên: 06/07/2014, 09:20

Ngày tải lên: 14/03/2014, 13:20

... gian tìm hiểu, học viên định chọn điều khiển Two -degree- of- freedom- control làm đối tượng nghiên cứu Dựa vào lý thuyết điều khiển Two -degree- of- freedom- control, học viên áp dụng để điều khiển đối ... phương pháp điều khiển hệ thống có trễ, tập trung vào phương pháp Two -degree- of- freedom- control - Kết hợp điều khiển Two -degree- of- freedom- control với điều khiển Tự chỉnh định STR - Áp dụng phương ... tốt Two -degree- of- freedom- control để tiến hành nghiên cứu phát triển, sau áp dụng vào hệ quạt gió phẳng để kiểm chứng Chương 2: Trình bày chi tiết lý thuyết điều khiển Two -degree- of- freedomcontrol...

Ngày tải lên: 26/05/2014, 00:05

... 0.08 ± 0.1 0.06 ± 0.1 grey value match of CBCT2 with planning CT group mean error (M) root mean square of random errors (σ) Degree of freedom (DoF) In a total of fractions, the initial IR-based position ... Infrared, CBCT = cone-beam CT, DoF = degrees of freedom The position of the infrared markers, as read by the ceiling mounted infrared cameras is saved within the PatMon software (= IR-dataset1) After ... mechanical arm Patients can be positioned with any pitch, roll or yaw rotation of the head offering additional degrees of freedom for treatment planning or improved patient comfort Wilbert et al...

Ngày tải lên: 09/08/2014, 08:23

... Damped-free vibration of two-dof systems Consider a two degrees of freedom system with damping as shown in figure x1 k1 c1 m1 x2 k2 c2 m2 k3 c3 Figure Now the equation of motion of this system can ... the normal modes of vibration of a double pendulum with same length and mass of the pendulum Develop a matlab code for determination of free-vibration of a general two -degree of freedom system ... Absorber Consider a vibrating system of mass m1 , stiffness k1 , subjected to a force F sin ωt As studied in case of forced vibration of single- degree of freedom system, the system will have...

Ngày tải lên: 29/08/2014, 22:44

... systems – Uncoupling of the Equations of motion Equations of motion of an undamped multi -degree of freedom system The displacement vector can be written as a linear combination of the mode shape ... 53/58:153 Lecture Fundamental of Vibration Orthogonality of undamped free vibration mode shapes An n degree of freedom system has n natural frequencies ... orthogonality: Proof: Mass nomalization: -2- 53/58:153 Lecture Fundamental of Vibration Stiffness orthogonality: Proof: Modal superposition for undamped systems...

Ngày tải lên: 29/08/2014, 22:45

... representations of non -linear systems Recall that the Hammerstein structure consists of a non -linear static system followed by linear dynamics On the basis of the use of the inverse of the non -linear ... Control of Continuous Linear Systems In summary, the objective of this book is to provide the reader with a sound understanding of the foundations of the modelling and control of linear continuous systems ... design of controllers for non -linear systems This explains why linear models are used, because also the theory related to the control of linear systems is well established1 The model obtained is linearized...

Ngày tải lên: 01/01/2014, 20:12

... Q p has column vectors the p linear independent eigenvectors of the finite generalized eigenvalues of sF-G (see [1] for an algorithm of the computation of Qp) Proof Let Q = [QpQq], where Qp ∈ ... The aim of this article was to give necessary and sufficient conditions for existence and uniqueness of solutions for generalized linear discrete-time boundary value problems of a class of linear ... invariants of sF - G are s 1, s - 2, s - (finite elementary divisors) and ˆ3 (infinite elementary divisor of degree s 3) Then ⎤ ⎡ 0 k J3 = ⎣ 2k ⎦ 0 3k and the columns of Qp are the eigenvectors of the...

Ngày tải lên: 20/06/2014, 22:20

... and uniqueness of solutions of (2.1) and (2.2) were considered by numerous authors, e.g., [4,8] 2.1 Linear control system in the form of a-integrator Consider a control system of the form (Dαs ... scalar representation equation of a control system in a controllable state space form Because of the specific nature of initial conditions for systems defined by means of Riemann-Liouville derivative, ... optimal control of fractional systems can be found, e.g., in [12-14] Authors’ contributions All authors, together, carried out the studies of steering linear fractional control systems, edited,...

Ngày tải lên: 21/06/2014, 02:20

... interest of this paper is concerned with the positivity and stability of solutions independent of the sizes of the delays and also being independent of eventual coincidence of some values of delays ... dynamic systems, ” International Journal of Systems Science, vol 14, no 4, pp 367–383, 1983 25 M De la Sen and N Luo, “On the uniform exponential stability of a wide class of linear time-delay systems, ” ... investigation of fixed points in Caputo linear fractional dynamic systems of real order α which involved delayed dynamics subject to a finite set of bounded point delays which can be of arbitrary...

Ngày tải lên: 21/06/2014, 05:20

... suggested to the study of stability and estimates of solutions of 1.1 Exponential Stability and Estimates of the Convergence of Solutions to Stable Systems First we give two definitions of stability to ... also suggested for investigating the asymptotic stability of neutral nonlinear systems The investigation of nonlinear neutral delayed systems with two time dependent bounded delays in to determine ... function v x xT Hx has been used to investigate the stability of systems 1.1 in see as well The stability of linear neutral systems of type 1.1 , but with different delays h1 and h2 , is studied...

Ngày tải lên: 21/06/2014, 11:20

... developments of the secondorder systems 1.1 , see In this paper, we use this kind of condition to consider the existence of periodic solutions of first-order linear Hamiltonian system with a nonlinear ... In the proof of 2.2 , we use the imbedding result 1.10 , the finite dimensionality of E , and Young inequality In the proof of 2π |un |α |un | dt ≤ un C un 2α 2.4 , we need a little bit of caution ... revision of the paper Part of the work is supported by CSC and a science fund from Dalian University of Technology The author thanks Professor Rabinowitz and the members at Mathematics Department of...

Ngày tải lên: 21/06/2014, 18:20

... dB OFDMA, −20 dB OFDMA, −10 dB OFDMA, dB OFDMA, 10 dB OFDMA, 20 dB OFDMA, 30 dB SC-FDMA, −20 dB SC-FDMA, −10 dB SC-FDMA, dB SC-FDMA, 10 dB SC-FDMA, 20 dB SC-FDMA, 30 dB Figure 5: Comparison of ... Figure 2: Equivalent block diagram of SC-FDMA systems OFDMA system can be calculated as the sum of the rates of the assigned sub-carriers, which is given by ⎛ N −1 COFDMA = n=0 ⎜ log2 ⎝1 + Pn hn N0 ... y Remove CP OFDMA Figure 1: Block diagram of SC-FDMA systems and its relation to OFDMA systems Partnership Project (3GPP).) In order to obtain a PAPR comparable to the conventional single carrier...

Ngày tải lên: 21/06/2014, 23:20

... tackled the problem of optimal design of linear arrays in a cellular systems under the assumption of Gaussian interference Two design problems are considered: maximization of the ergodic capacity ... localization of transmitters based on the estimation of direction of arrivals REFERENCES [1] J H Winters, J Salz, and R D Gitlin, “The impact of antenna diversity on the capacity of wireless communication ... minimization of the interference power at the output of the matched filter (by developing a closed form approximation of the performance criterion), for fixed and variable positions of user and...

Ngày tải lên: 22/06/2014, 19:20

... Discrete systems of the form (1.1) containing only one delay are often called systems with pure delay The main goal of the present paper is to extend the notion of the delayed exponential of a matrix ... tool for the formalizing of computation of initial problems for systems of the form (1.3), since the usually used method of steps (being nevertheless hidden in the notion of delayed exponential) ... Now we change the index of summation j by j + Then ΔeBk = B I + m −1 Bj · j =1 (m + 1) − jm +B j (2.23) Representation of solutions of linear discrete systems With the aid of the relation k = (m...

Ngày tải lên: 22/06/2014, 22:20

... Leenheer and D Aeyels, Stabilization of positive linear systems Systems and Control Letters 44 (2001) 259–271 16 Ph H A Ngoc and N K Son, Stability radii of linear systems under multiperturbations, ... of interest to consider conditions of robust stability of a polytope of matrices It is well known that, in general, the stability of all vertex matrices is not sufficient for robust stability of ... radii of linear discrete-time systems and symplectic pencils, Inter J Nonlinear and Robust Control, (1991) 79–97 11 D Hinrichsen and N K Son, Stability radii of positive discrete-time systems...

Ngày tải lên: 06/08/2014, 05:20

... extension of the theory to the measure of degree of connectedness of random factors is illustrated in this example by calculations of D and &*( for breeding dquo;’ values (table II) Sources of unbalancedness ... a particular comparison among levels of some factor or for a global evaluation of their degree of connectedness Applications of these criteria to degree of connectedness among sires in a reference ... is of interest to look at the degree of connectedness between this group factor and other fixed effects, or equivalently to degree of connectedness among group levels due to the incidence of...

Ngày tải lên: 14/08/2014, 20:20

... depends on the parameters of elastic elements and theừ static deflection and by the appearance of the non -linear terms with different degrees of smallness in the equations of motion Stationary oscillations ... s tain y and w ith high degrees T h e origin y = z = (a = 0) of this s y stem is always u n sta b le, b eca u se th e charac­ teristic eq u ation of the linear term s of (II.2.6) has the roots ... ip, sin ip — (1.2.6) SOME PROBLEMS OF NON -LINEAR OSCILLATIONS IN SYSTEMS WITH LARGE STATIC w h e r e R(0 , Bi) = R ( A h 0) = C o m p a rin g th e coefficients of the harmonics in (1.2.5) we have...

Ngày tải lên: 08/04/2015, 15:33

... observed Euler’s Discretization of Single- Input ECB-SMC Systems 2.1 The Single- Input ECB-SMC Systems Without loss of generality, consider the linear system with a single input u ∈ R in the controllable ... Restriction 3.1 The Single- Input ECB-SMC Systems with Relative Degree Restriction We now consider the single input linear system with relative degree restriction The single input systems in the controllable ... eigenvalues of Bc are zeros of the characteristic equation (5) which is Hurwitz 2.2 Euler’s Discretization We consider the effects of the discrete implementation of the control system (6) by means of the...

Ngày tải lên: 01/07/2015, 10:07