motor using matlab and simulink

... z34 poles and zeros; poles of left-hand and right-hand constrained systems are the same as the zeros of the unconstrained system The left-hand plot in Figure 4.6 displays the z34 poles and zeros ... in the problem and sets the values of the masses and stiffnesses randomly between the values of 1 and 2 The program then allows one to choose which transfer function to calculate, and shows the ... this is the case and the number of poles and zeros do not match the expected number, rerun the code until more widely spaced poles/zeros are randomly chosen and the required poles and zeros are

Ngày tải lên: 05/05/2018, 09:35

... matrix A from (5.17a) and inserting in (5.45): Trang 11m, c and k We will use the MATLAB code tdof_non_prop_damped.m as we continue our exploration of complex modes 5.7 MATLAB Code tdof_non_prop_damped.m: ... n 2 the set, and the complex conjugacy of the two is stated as: λ = λ , where n 2 n1∗ the “*” indicates a complex conjugate The real and imaginary parts will be defined using σnxandω , respectively: ... displacements and velocities, so the matrix output equation becomes, where C is the identity matrix and D is assumed to be zero: Trang 8If we were only interested in the three displacements and not

Ngày tải lên: 05/05/2018, 09:35

... forces at % masses 1, 2 and 3 and for all 6 states, three displacements and three velocities sssys = ss(a,b,c,d); % use the bode command with left hand magnitude and phase vector arguments ... “tdof_ss_time_ode45_slnk” from the MATLAB prompt and use the default selection The second solution uses the Simulink model tdof_ss_simulink.mdl and the plotting file tdof_ss_time_slnk_plot.m To use the Simulink solver: ... “tdof_ss_time_ode45_slnk” and choose the Simulink solver 2) The program will prompt the reader to type “tdof_ss_simulink” at the MATLAB command prompt This will bring up the Simulink model on the

Ngày tải lên: 05/05/2018, 09:36

... motion Trang 4and the form of the motion The nonstandard problem is “nonstandard” because the mass matrix m falls on the right-hand side The form of the matrix presents no problem for hand calculations, ... the system matrix, A, by inspection Assemble the input and output matrices, B and C, using appropriate eigenvector terms Frequency domain and forced transient response problems can be solved at ... and the benefits derived: 1) Solve the undamped eigenvalue problem, which identifies the resonant frequencies and mode shapes (eigenvalues and eigenvectors), useful in themselves for understanding

Ngày tải lên: 05/05/2018, 09:36

... sketch frequency response plots by hand, knowing the high and low frequency asymptotes and the locations of the poles and zeros Similarly, we can combine modes by hand if we know the signs (phases) ... and equal and opposite sign forces at masses 1 and 2 should work: F1= −F , F3 2 =0: Trang 138.7 How Modes Combine to Create Transfer Functions We have shown that both the normal mode method and ... 18frequency section, damping dominated resonant section and mass dominated high frequency section The MATLAB code tdof_modal_xfer.m is used to calculate and plot the individual mode contributions to

Ngày tải lên: 05/05/2018, 09:36

... be solved by hand, using the modal analysis method derivation from Chapter 7 As in the frequency response analysis in the previous chapter, we will again start with the eigenvalues and eigenvectors ... conditions and forces to principal coordinates and write the equations of motion in principal coordinates Laplace transforms will be used to solve for the motions in principal coordinates and we ... then coded in MATLAB and the results plotted, highlighting the individual mode contributions 9.2 Review of Previous Results The applied step forces are as shown in Figure 9.1 and the initial

Ngày tải lên: 05/05/2018, 09:36

... similar to the “xn” and “w1, w2 and w3” from tdofss_eig.m Since we can add proportional damping to our modal model, the code prompts for a value for zeta Knowing zeta and the eigenvalues, ... tdofss_eig.m to provide eigenvalues and eigenvectors tdofss_eig; % note, this is the point where we would start if we had eigenvalue results from ANSYS, % using the eigenvalues and eigenvectors to define ... response plot Then we will define a state space model, using the matrices defined in the section above Because we are using a 6x3 input matrix and a 3x6 output matrix, we have access to nine frequency

Ngày tải lên: 05/05/2018, 09:36

... modal form and obtain the closed form transient solution for the forcing function and initial conditions described in Figure 12.1 MATLAB will then be used to solve the same equations using the ... sets of equations for modes 2 and 3 can be solved for x (t) and x (t)3 5 in a similar fashion, again giving results which are the same as for z (t) and z (t) in (9.27) and (9.34) The three velocity ... eigenvalues and eigenvectors tdofss_eig; global a_ss a1_ss a2_ss a3_ss b b1 b2 b3 u % note, this is the point where we would start if we had eigenvalue results from ANSYS, % using the eigenvalues and

Ngày tải lên: 05/05/2018, 09:36

... cantilever stiffness matrix up to become the first and second rows and columns, which moves the first and third rows and columns down to the second and fourth positions © 2001 by Chapman & Hall/CRC ... connected to degrees of freedom 1 and 2: st 1 and 2 columns of global stiffness matrix − k (13.3) For element 2, which is connected to degrees of freedom 1 and 6: st 1 and 6 columns of global stiffness ... freedom 2 and 3: nd 2 and 3 columns of global stiffness matrix − k (13.5) © 2001 by Chapman & Hall/CRC Trang 4For element 4, which is connected to degrees of freedom 3 and 4: rd 3 and 4

Ngày tải lên: 05/05/2018, 09:36

... eigenvalues and eigenvectors using MATLAB and results are compared to the hand calculations Following the two-element cantilever example, a second MATLAB code allows solving for eigenvalues and eigenvectors ... state space MATLAB models These MATLAB models are then used for frequency and time domain analyses This chapter serves as a bridge between carrying out analyses completely in MATLAB and using ANSYS ... and 4 to 2: © 2001 by Chapman & Hall/CRC Trang 11* bb1528 241 1715 1372 ml Trang 12b1 b1 3Converting to state space form, where x and x are displacement and 1 2velocity of node 2 and x and

Ngày tải lên: 05/05/2018, 09:36

... judiciously or by using “modred.” Once the model is created, we will solve for frequency response and step response using various combinations of truncating and sorting modes The MATLAB code cantbeam_ss_modred.m ... which makes using MATLAB for state space frequency response models an efficient adjunct to ANSYS We will review how to have MATLAB build a state space model given only the eigenvalues and required ... © 2001 by Chapman & Hall/CRC Trang 6modal matrix below in MATLAB and choose the appropriate rows of data within MATLAB SET COMMAND GOT LOAD STEP= 1 SUBSTEP= 1 CUMULATIVE ITERATION= 1

Ngày tải lên: 05/05/2018, 09:36

... code and is used to calculate the force between the beam tip and the shaker The shaker mass value is the same value as in the ANSYS code and is used to define the force required in the MATLAB ... When unloaded, the slider will re-approach the disk and possibly damage the disk Thus, understanding resonant characteristics of the suspension and the resulting tendency to unload the head is very ... models, each with 16-beam elements and using the Reduced method for eigenvalue extraction, is shown below: Table 16.1: Resonant frequencies for tip-constrained and spring-tip models The table

Ngày tải lên: 05/05/2018, 09:36

... eigenvalues and UX and UY eigenvector entries are stripped out of the actrl.eig file and stored in the MATLAB mat file actrl_eig.mat (Appendix 1) Now we are ready to read the ANSYS results into MATLAB and ... responses for the displacements of heads 0 and 1 (bottom and top heads) for coil input force can be seen in Figures 17.14 and 17.15 Mode shape plots, with undeformed and deformed shapes, are then shown ... head 0 and head 1 Modes 2 and 3, at 785 and 884 hz, are representative of modes that do not couple because of the direction of the motion Both modes involve only bending motions of arms and/or

Ngày tải lên: 05/05/2018, 09:36

... then calculates and plots the input and output contributors to the dc gain, z /nki ω and i z /nji ω iand the resulting dc gain This is the first time we have separated the input and output contributors ... controllability and observability given above can be stated precisely using standard state space notation See Chen [1999], Zhou [1996, 1998], Kailath [1980] and Bay [1999] for derivations and more detail ... the dc and peak gain ranking methods using the disk drive actuator/suspension model from the last chapter We have developed a strong mental picture of ranking individual modes using dc and peak

Ngày tải lên: 05/05/2018, 09:36

... respectively For a SISO system, we can rank the relative importance of modes using two methods, by using dc or peak gains and by using balancing For a MIMO system, balancing is the only practical option ... two-input, two-output MIMO system While dc and peak gains are not required for the “balreal” and “modred” model reduction, they will serve to bridge our understanding from SISO models to MIMO models ... The oscillatory modes are balanced and “modred” is used with both the “del” and “mdc” options to reduce the model Frequency responses for head 0 for both coil and piezo inputs for “del” reduction

Ngày tải lên: 05/05/2018, 09:36

... hcihw maeb a no sedils m ssam fo llab A :4 giF ni nwohs metsys maeB-dna-llaB eht redisnoC Ball -and- Beam deniatbo stluser eht no tnemmoC 1x ssam tsrfi eht fo noitisop eht fo daetsni derusaem si ... gniyrt dna dellortnoc eb ot metsys eht htiw gnikrow yltcerid ot srefer ”smetsys ngiseD no sdnaH“ “Hands-on” Design of Control Systems metsys redro dnoces fo esnopseR petS :5 erugiF 0 20 40 60 time...

Ngày tải lên: 12/12/2013, 07:15

... with random wind gusts, mineral-processing plant with random grade ore, and phone network with random arrival times and call lengths 8 Modeling and Simulation of Systems Using MATLAB and Simulink ... thinking and systems approach facilitates us to have a thorough understanding of the basic structure of the system Modeling and Simulation of Systems Using MATLAB and Simulink 16 Husband Husband ... problems and learning from the results (Checkland, 1999, 2006; Checkland and Winter, 2000; Winter and Checkland, 2003) Soft system is a branch of systems thinking specifically designed for use and...

Ngày tải lên: 01/04/2014, 10:55

... implementation and as its application using commercial software The computer implementation is carried out using MATLAB , while the practical applications are carried out in both MATLAB and Abaqus MATLAB ... Finite Element Analysis Using MATLAB and Abaqus ® © 2013 by Taylor & Francis Group, LLC © 2013 by Taylor & Francis Group, LLC Introduction to Finite Element Analysis Using MATLAB and Abaqus ® Amar ... notwithstanding the quality of the pre- and postprocessing capabilities Finally, if you want to understand the introductory theory of the finite element method, to program it in MATLAB, and/ or...

Ngày tải lên: 08/01/2014, 12:58

... A−1 MATLAB Computations: Pages A−4, A−7, A−9 B Introduction to Simulink B.1 B.2 B−1 Simulink and its Relation to MATLAB B−1 Simulink Demos B−20 MATLAB Computations and Simulink ... Numerical Analysis Using MATLAB and Excel® Third Edition Students and working professionals will find Numerical Analysis Using MATLAB and Excel®, Third Edition, to be a concise and easy-to-learn ... Numerical Analysis Using MATLAB and Excel®, Third Edition Copyright © Orchard Publications MATLAB Computations: Pages C−1, C−4 through C−5 References Index Numerical Analysis Using MATLAB and Excel®,...

Ngày tải lên: 08/04/2014, 10:22

... actuator/suspension systems using ANSYS and MATLAB All chapters list and discuss the related MATLAB code, and all but the last three chapters list the related ANSYS code All the MATLAB and ANSYS input codes, ... form using the MATLAB “ode45” command and “function” files Chapters 13 and 14 discuss the basics of static and dynamic analysis using finite elements, the generation of global stiffness and mass ... locations for the nine transfer functions using MATLAB s “pzmap” command MATLAB is used to calculate and plot poles and zeros for values of damping greater than zero and we will see that additional real...

Ngày tải lên: 08/04/2014, 10:29