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| author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
|---|---|---|
| committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
| commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
| tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /3811/CH11/EX11.4/Ex11_4.sce | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
| download | Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.gz Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.bz2 Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.zip | |
initial commit / add all books
Diffstat (limited to '3811/CH11/EX11.4/Ex11_4.sce')
| -rw-r--r-- | 3811/CH11/EX11.4/Ex11_4.sce | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/3811/CH11/EX11.4/Ex11_4.sce b/3811/CH11/EX11.4/Ex11_4.sce new file mode 100644 index 000000000..1cdf12506 --- /dev/null +++ b/3811/CH11/EX11.4/Ex11_4.sce @@ -0,0 +1,18 @@ +//Book Name: Fundamentals of electrical drives by Mohamad A. El- Sharkawi
+//chapter 11
+//example 11.4
+//edition 1
+//publishing place:Thomson Learning
+clc;
+clear;
+Ra=1;//armature resistance in ohm
+Kphi=3;//field constant in V sec
+Vt=500;//terminal voltage in volt
+Vf=600;//increased motor voltage in volt
+Td=20;//constant torque of thmotor in Nm
+J=6;//total moment of inertia of the drive in Nm
+omega0=(Vt/Kphi)-((Ra*Td)/Kphi^(2));//initial speed in rad/sec
+omegaf=(Vf/Kphi)-((Ra*Td)/Kphi^(2));//final speed in rad/sec
+tau=(J*Ra)/Kphi^(2);
+t=-(tau*log((0.05*omegaf)/(omegaf-omega0)));//obtained from the equation of omega=omega(f)(1-e^-t/tau)+omega(0)e^-t/tau
+mprintf("The time required to change the motor speed is %f sec",t)
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