Gelöste Aufgaben/JUMP - Versionsgeschichte

Mechaniker am 7. November 2021 um 16:51 Uhr

2021-11-07T16:51:28Z

← Nächstältere Version		Version vom 7. November 2021, 16:51 Uhr
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	in Matlab<sup>Ⓡ</sup> - the nonlinear characteristics and the algorithm that computes the contact points between car and track are too demanding for Maxima.		in Matlab<sup>Ⓡ</sup> - the nonlinear characteristics and the algorithm that computes the contact points between car and track are too demanding for Maxima.

	===Implementation in Matlab===		===Implementation in Matlab<sup>®</sup>===

	We follow [[Werkzeuge/Software/Matlab/Grundstruktur eines ~~Matlab©~~-Programms\|our basic process schema]] for implementing this initial-value-problem in Matlab.		We follow [[Werkzeuge/Software/Matlab/Grundstruktur eines Matlab<sup>®</sup>-Programms\|our basic process schema]] for implementing this initial-value-problem in Matlab<sup>®</sup>.

	The <nowiki>JUMP</nowiki>-script has these functions:		The <nowiki>JUMP</nowiki>-script has these functions:
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	* post-processing.		* post-processing.

	Key to the solution process is a call to Matlab's own solver		Key to the solution process is a call to Matlab<sup>®</sup>'s own solver

	[https://la.mathworks.com/help/matlab/ref/ode15s.html ode15s]		[https://la.mathworks.com/help/matlab/ref/ode15s.html ode15s]
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	\|text =[[Datei:JUMP-folder-structure.png\|links\|mini\|Folder Structure]]The folder-structure shows the main script <nowiki>JUMP.m</nowiki>. Classes and Functions are located in the respective dolfers. The Excel-file holds all system parameters.		\|text =[[Datei:JUMP-folder-structure.png\|links\|mini\|Folder Structure]]The folder-structure shows the main script <nowiki>JUMP.m</nowiki>. Classes and Functions are located in the respective dolfers. The Excel-file holds all system parameters.

	To download the full Matlab-project download the zip-file from the link to your right.		To download the full Matlab<sup>®</sup>-project download the zip-file from the link to your right.
	\|file =JUMP.7z}}		\|file =JUMP.7z}}

Mechaniker am 21. April 2021 um 16:02 Uhr

2021-04-21T16:02:24Z

← Nächstältere Version		Version vom 21. April 2021, 16:02 Uhr
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	And the wheel torque propels the car, delivering new locations and velocities.		And the wheel torque propels the car, delivering new locations and velocities.

	These are the submodels to be developed in each workpackage:		These are the submodels to be developed in each workpackage. Please follow the links:

	<div id="workpackages">		<div id="workpackages">

Mechaniker am 21. April 2021 um 16:01 Uhr

2021-04-21T16:01:17Z

← Nächstältere Version		Version vom 21. April 2021, 16:01 Uhr
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	... yes - we made it!		... yes - we made it!

			<hr/>
	Associated pages of the submodels:		Associated pages of the submodels:
	<splist showparent="no"		<splist showparent="no"
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	kidsonly="yes"		kidsonly="yes"
	debug="0" />		debug="0" />

	~~<hr/>~~

	'''Links'''		'''Links'''

Mechaniker am 21. April 2021 um 16:01 Uhr

2021-04-21T16:01:01Z

@@ Zeile 321: / Zeile 321: @@
 [[Datei:JUMP-results-04c.png|ohne|mini|Jump-attempt 3: YES!]]
 ... yes - we made it!
 <hr/>

Mechaniker am 3. April 2021 um 06:06 Uhr

2021-04-03T06:06:28Z

← Nächstältere Version		Version vom 3. April 2021, 06:06 Uhr
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	No we give full throttle:		No we give full throttle:
	[[Datei:JUMP-results-04b.png\|ohne\|mini\|Jump-attempt 2: crashed]]		[[Datei:JUMP-results-04b.png\|ohne\|mini\|Jump-attempt 2: crashed]]
	We did not have the speed ~~necessary~~ to make the jump. Instead ~~what happens is that~~ car-model ~~tip~~ over. In our simulation it continues driving upside down - but with the car-body-center below the wheels.		We did not just have the minimum speed to make the jump. Instead the car-model crashes into the ramp with its rear wheels and tips over. In our simulation it continues driving upside down - but with the car-body-center below the wheels.

	==== Third "jump" attempt: YES! ====		==== Third "jump" attempt: YES! ====

Mechaniker am 25. März 2021 um 08:09 Uhr

2021-03-25T08:09:56Z

← Nächstältere Version		Version vom 25. März 2021, 08:09 Uhr
Zeile 306:		Zeile 306:
	I did not include the one where the car drives right through the ramp - because the stiff solver chose step-sizes which passed out on this object ....		I did not include the one where the car drives right through the ramp - because the stiff solver chose step-sizes which passed out on this object ....

	=== First "jump" attempt: a test-run ===		==== First "jump" attempt: a test-run ====

	We select a speed-setpoint of ''V<sub>set</sub>'' = 1 m/s - and test the drive-range carefully.		We select a speed-setpoint of ''V<sub>set</sub>'' = 1 m/s - and test the drive-range carefully.
Zeile 312:		Zeile 312:
	Of course we did not jump - with such a low speed. We we know, the simulation performs as expected.		Of course we did not jump - with such a low speed. We we know, the simulation performs as expected.

	=== Second "jump" attempt: ups - nearly made it ===		==== Second "jump" attempt: ups - nearly made it ====
	No we give full throttle:		No we give full throttle:
	[[Datei:JUMP-results-04b.png\|ohne\|mini\|Jump-attempt 2: crashed]]		[[Datei:JUMP-results-04b.png\|ohne\|mini\|Jump-attempt 2: crashed]]
	We did not have the speed necessary to make the jump. Instead what happens is that car-model tip over. In our simulation it continues driving upside down - but with the car-body-center below the wheels.		We did not have the speed necessary to make the jump. Instead what happens is that car-model tip over. In our simulation it continues driving upside down - but with the car-body-center below the wheels.

	=== Third "jump" attempt: YES! ===		==== Third "jump" attempt: YES! ====
	No we use a little more run-up and ...		No we use a little more run-up and ...
	[[Datei:JUMP-results-04c.png\|ohne\|mini\|Jump-attempt 3: YES!]]		[[Datei:JUMP-results-04c.png\|ohne\|mini\|Jump-attempt 3: YES!]]

Mechaniker: /* Simulation */

2021-03-25T08:07:55Z

Simulation

← Nächstältere Version		Version vom 25. März 2021, 08:07 Uhr
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	so we need to plan for a long run-up!		so we need to plan for a long run-up!

	==== First "jump" attempt: a test-run ====		===Simulation Runs===

			We show a few examples of what can go wrong when doing this kind of simulations.
			I did not include the one where the car drives right through the ramp - because the stiff solver chose step-sizes which passed out on this object ....

			=== First "jump" attempt: a test-run ===

	We select a speed-setpoint of ''V<sub>set</sub>'' = 1 m/s - and test the drive-range carefully.		We select a speed-setpoint of ''V<sub>set</sub>'' = 1 m/s - and test the drive-range carefully.
Zeile 307:		Zeile 312:
	Of course we did not jump - with such a low speed. We we know, the simulation performs as expected.		Of course we did not jump - with such a low speed. We we know, the simulation performs as expected.

	===== Second "jump" attempt: ups - nearly made it =====		=== Second "jump" attempt: ups - nearly made it ===
	No we give full throttle:		No we give full throttle:
	[[Datei:JUMP-results-04b.png\|ohne\|mini\|Jump-attempt 2: crashed]]		[[Datei:JUMP-results-04b.png\|ohne\|mini\|Jump-attempt 2: crashed]]
	We did not have the speed necessary to make the jump. Instead what happens is that car-model tip over. In our simulation it continues driving upside down - but with the car-body-center below the wheels.		We did not have the speed necessary to make the jump. Instead what happens is that car-model tip over. In our simulation it continues driving upside down - but with the car-body-center below the wheels.

	===== Third "jump" attempt: YES! =====		=== Third "jump" attempt: YES! ===
	No we use a little more run-up and ...		No we use a little more run-up and ...
	[[Datei:JUMP-results-04c.png\|ohne\|mini\|Jump-attempt 3: YES!]]		[[Datei:JUMP-results-04c.png\|ohne\|mini\|Jump-attempt 3: YES!]]

Mechaniker: /* Implementation in Matlab */

2021-03-25T08:02:54Z

Implementation in Matlab

← Nächstältere Version		Version vom 25. März 2021, 08:02 Uhr
Zeile 307:		Zeile 307:
	Of course we did not jump - with such a low speed. We we know, the simulation performs as expected.		Of course we did not jump - with such a low speed. We we know, the simulation performs as expected.

	====== Second "jump" attempt: ups - nearly made it ======		===== Second "jump" attempt: ups - nearly made it =====
	No we give full throttle:		No we give full throttle:
	[[Datei:JUMP-results-04b.png\|ohne\|mini\|Jump-attempt 2: crashed]]		[[Datei:JUMP-results-04b.png\|ohne\|mini\|Jump-attempt 2: crashed]]
	We did not have the speed necessary to make the jump. Instead what happens is that car-model tip over. In our simulation it continues driving upside down - but with the car-body-center below the wheels.		We did not have the speed necessary to make the jump. Instead what happens is that car-model tip over. In our simulation it continues driving upside down - but with the car-body-center below the wheels.

	====== Third "jump" attempt: YES! ======		===== Third "jump" attempt: YES! =====
	No we use a little more run-up and ...		No we use a little more run-up and ...
	[[Datei:JUMP-results-04c.png\|ohne\|mini\|Jump-attempt 3: YES!]]		[[Datei:JUMP-results-04c.png\|ohne\|mini\|Jump-attempt 3: YES!]]

Mechaniker: /* Problem Statement */

2021-03-25T08:01:39Z

Problem Statement

← Nächstältere Version		Version vom 25. März 2021, 08:01 Uhr
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	<onlyinclude>		<onlyinclude>
	<table style="float: left">		<table style="float: left">
	<tr><td>[[Datei:JUMP-01.png\|left\|mini]]</td><td>[[Datei:JUMP-results-04c+.png\|mini\|~~200px~~]]</td></tr>		<tr><td>[[Datei:JUMP-01.png\|left\|mini\|Jump!]]</td><td>[[Datei:JUMP-results-04c+.png\|mini\|170px\|Trajectories]]</td></tr>
	</table>		</table>
	Create a mathematical Model for an RC-Model Car.		Create a mathematical Model for an RC-Model Car.

Mechaniker: /* Problem Statement */

2021-03-25T08:00:38Z

Problem Statement

← Nächstältere Version		Version vom 25. März 2021, 08:00 Uhr
Zeile 18:		Zeile 18:
	<onlyinclude>		<onlyinclude>
	<table style="float: left">		<table style="float: left">
	<tr><td>[[Datei:JUMP-01.png\|left\|mini]]</td><td>[[Datei:JUMP-results-04c+.png\|mini]]</td></tr>		<tr><td>[[Datei:JUMP-01.png\|left\|mini]]</td><td>[[Datei:JUMP-results-04c+.png\|mini\|200px]]</td></tr>
	</table>		</table>
	Create a mathematical Model for an RC-Model Car.		Create a mathematical Model for an RC-Model Car.