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safi58


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统计学

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why if elseif statement is not working
Hi, I have this following code and attached data. only if statement is working but not the rest. can any please help? clc c...

3 years 前 | 2 个回答 | 0

2

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How to get symmetrical phasor using Symmetrical-Components Transform block?
Hi, I can see I can get Va symmetrical components using simulink symmetrical component transfer block. how can I get remaining ...

3 years 前 | 0 个回答 | 0

0

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GA Optimization terminated without converging
Hi, I am using GA toolbox for an optimization problem. but it is showing following message even before converging.. "Optimizat...

3 years 前 | 1 个回答 | 0

1

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Optimize two objective functions using fmincon
I have two objective functions which would optimize same variables. I have done the optimization individually and they are worki...

7 years 前 | 1 个回答 | 1

1

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numerical solution of equations
% clc clear all L_r=2.4e-6; L_m=11e-6; C_r=1.3e-6; R_L=533.33; f_s=95e+3; n=0.067; V_in=20; R_ac=n^2*R_L*8/pi^2; f...

7 years 前 | 1 个回答 | 0

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提问


How to find symbolic solution for theta1?
clc clear all syms m_c_theta1 m_c0 M theta1 j_L0 j_L_theta1 l j_Lm_gama syms m_c_theta2 theta2 j_L_theta2 m_c_gama k1...

7 years 前 | 1 个回答 | 0

1

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提问


error message in solving symbolic equation???
syms m_c0 j_L0 theta1 M m_c_gama j_L_gama j_L_theta1 m_c_theta2 _L_theta2 syms m_c_theta1 gama l theta2 k1 eqn1=m_c_th...

7 years 前 | 1 个回答 | 0

1

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提问


How to find the expression for theta1?
theta1=2*atan((2*tan(theta2/2)*tan(gama/2 - theta2/2) + (4*tan(theta2/2)^2 - 4*M^2*tan(theta2/2)^2 - 4*M^2*tan(gama/2 - ...

7 years 前 | 2 个回答 | 0

2

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How to Simplify an symbolic expression
Hi all, I want to simplify this equation a= 2 atan((-2+Sqrt(4-gama^2 *l^2* M^2-4* gama *l* M^2 *tan(gama/2)+4* tan(gama/...

7 years 前 | 2 个回答 | 0

2

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How to add symbolic variables like alpha, theta in Figure axis?
Hi all, How to add symbolic variables like alpha, theta in Figure axis? Can anyone help?

7 years 前 | 1 个回答 | 0

1

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why am I getting imaginary values?
Hi all, I have tried this one but I am not quite sure why I am getting imaginary values? The values should be approximately j_L0...

7 years 前 | 1 个回答 | 0

1

个回答

提问


Fundamental component of waveforms
<</matlabcentral/answers/uploaded_files/70512/waveform.jpg>> Hi all, I need to find the fundamentals of these two waveform...

7 years 前 | 0 个回答 | 0

0

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numerical solution of equation
syms m_c_theta1 m_c0 M theta1 j_L0 j_L_theta1 l syms m_c_gama k1 gama j_L_gama j_L_theta1=1.5; theta1=120; k1=0.423;...

8 years 前 | 2 个回答 | 0

2

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Error in solving equation
syms m_c0 j_L0 theta1 M m_c_gama j_L_gama j_L_theta1 m_c_theta2 _L_theta2 syms m_c_theta1 gama l theta2 k1 eqn1=m_c_...

8 years 前 | 0 个回答 | 0

0

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How to solve equation
m_c_theta1=(m_c0-1/M-1)*cos(theta1)+j_L0*sin(theta1)+1/M+1; j_L_theta1=(-m_c0+1/M+1)*sin(theta1)+j_L0*cos(theta1); m_c_g...

8 years 前 | 1 个回答 | 0

1

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Phase shifted Full bridge converter
Hi , I want to develop a phase shifted Full bridge simulink model in open loop control where I can change the phase manually....

8 years 前 | 2 个回答 | 0

2

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how to plot a surface in MATLAB?
lamda=0.218; rl=2.2; N=20 [fi, fn] = meshgrid(linspace(10,180,N),linspace(1,2,N)); gamma=pi./fn; x=1-cosd(fi);...

8 years 前 | 1 个回答 | 0

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提问


How to do Surf plot
Q=0.25; L=5; a=1-cos(2*pi*D1/fn); x=(pi*D1)/(fn*L)*sin(2*pi*D1/fn); y=cos(2*pi*D1/fn)*((4*Q/pi*fn)+((pi^2*D1/f...

8 years 前 | 1 个回答 | 0

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提问


sample the waveform with nsample points for fft
mc0 = -0.5; jlr0 = -0.8; M = 0.99; alpharange = 6.5; %// degrees alpharange2 = 180; %// degrees mcalpha = (mc0 - (1 / M) ...

8 years 前 | 0 个回答 | 0

0

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How to plot two equation consequetively
Hi, I have written this code and need to plot jlralph and jlrgamma in a continuous way from 0 to alpharange and alpharange to a...

8 years 前 | 1 个回答 | 0

1

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已回答
How to use Fsolve with multiple variables
Hi Walter, after solving these equations i have found the initial condition. Can you please tell me how to draw these waveforms?...

8 years 前 | 0

已回答
How to use Fsolve with multiple variables
in this paper on page 3284, they have used fsolve to solve those equations. see upper right side.

8 years 前 | 0