From 319681662d6598db00ddb371fab8a44a33fd126d Mon Sep 17 00:00:00 2001
From: Vasil Zlatanov <v@skozl.com>
Date: Mon, 20 Feb 2017 15:07:11 +0000
Subject: Improve skeleton for error

---
 coursework17/error_script.m | 27 ++++++++++++++++++++-------
 1 file changed, 20 insertions(+), 7 deletions(-)

(limited to 'coursework17')

diff --git a/coursework17/error_script.m b/coursework17/error_script.m
index 29988bf..2744ba9 100644
--- a/coursework17/error_script.m
+++ b/coursework17/error_script.m
@@ -1,13 +1,26 @@
 % This script will carry out error analysis
-T = 150e-6;
-f = 1/T;
+R = 0.5;    % 0.5Ohm
+L = 0.0015; % 1.5mH
 
-A=6;
+data_points = 10000;
 
-data_points=10e3;
+% Go on for 8 time constants
+time_constant = L/R;
+step = time_constant*8/data_points;
 
-% TODO find exact solution
-exact = @(t) ();
+T=150e-6; % 150us
+f = 1/T;  
+
+Vin = @(t) 6*cos(2*pi*f*t);
+current_initial=0;
+
+current_exact = @(t) --
+Vout_exact = @(t) --
+
+[time_array, Vout_array] = ralston(R, L, Vin, current_initial, step, data_points*step);
 
 for j=1:data_points
-	my_error = exact(time_array(j)) - Vout_array(j);
+	error_array(j) = Vout_exact(time_array(j)) - Vout_aray(j);
+end
+
+plot(log(time_array),log(error_array));
-- 
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