Introduction to VD Simulation - Revision history

Emilyanthony: /* RCVD Program Suite */

2022-10-18T22:39:32Z

RCVD Program Suite

Emilyanthony at 22:38, 18 October 2022

2022-10-18T22:38:12Z

Emilyanthony: /* Commercial Available Software */ add Milliken

2022-10-18T22:37:20Z

Commercial Available Software: add Milliken

Emilyanthony: /* OpenLAP */

2020-06-02T18:02:39Z

OpenLAP

Emilyanthony: /* OpenLAP */

2020-06-02T18:02:24Z

OpenLAP

Emilyanthony: /* OpenLAP */

2020-06-02T18:02:03Z

OpenLAP

Emilyanthony at 18:01, 2 June 2020

2020-06-02T18:01:39Z

Godjka at 10:17, 30 May 2020

2020-05-30T10:17:47Z

Bertaveira: formatation

2020-05-29T01:43:38Z

formatation

Godjka at 10:13, 28 May 2020

2020-05-28T10:13:01Z

@@ Line 53: / Line 53: @@
 ==Commercial Available Software==
 ===RCVD Program Suite===
-A number of simplified vehicle dynamics simulations are available onthe CD-ROM packaged with the workbook, "RCVD: Problems, Answers andExperiments".<br />Information about the software package can be found at<a href="https://www.millikenresearch.com/rcvdps.html" target="_blank" rel="noopener noreferrer" data-saferedirecturl="https://www.google.com/url?q=https://www.millikenresearch.com/rcvdps.html&source=gmail&ust=1666218593842000&usg=AOvVaw3tEgIILgfPj55nVWRwF5KW">https://www.millikenresearch.c<wbr />om/rcvdps.html</a> (includinginstallation instructions for Windows 8/10) and the book to accompany the software at<a href="https://www.sae.org/publications/books/content/r-280/" target="_blank" rel="noopener noreferrer" data-saferedirecturl="https://www.google.com/url?q=https://www.sae.org/publications/books/content/r-280/&source=gmail&ust=1666218593842000&usg=AOvVaw00lS2RtidL69G9-ScyB3zO">https://www.sae.org/publicatio<wbr />ns/books/content/r-280/.</a>The bookincludes a 17 page chapter with sample problems to work using thesoftware along with worked solutions. SAE International student members receive a discount on books.
+A number of simplified vehicle dynamics simulations are available on the CD-ROM packaged with the workbook, "RCVD: Problems, Answers and Experiments".
 Programs include:
@@ Line 65: / Line 63: @@
 * RCVD Speedway II
 * Moment Method
-* Ride/Roll Rate Calculator<br />
+* Ride/Roll Rate Calculator
 These programs, while simple in comparison with MRA's comprehensive vehicle modeling software, allow the user to investigate the basics of vehicle dynamics without testing a real vehicle. Key concepts from RCVD (such as oversteer/understeer, stability derivatives, force-moment analysis, load transfer and others) are illustrated through problems which are solved via the''Program Suite''. Such concepts, once understood in simple models, can be extended to more complex models or real vehicles.
 ===OpenLAP===
 Open source lap time simulator coded in MATLAB. Students may find the simulator files in the Mathworks file exchange in the link below:

@@ Line 52: / Line 52: @@
 ===4 Wheel===
 ==Commercial Available Software==
-==<span>RCVD Program Suite</span>==
+===RCVD Program Suite===
-<span>A number of simplified vehicle dynamics simulations are available on</span><span>the CD-ROM packaged with the workbook, "RCVD: Problems, Answers and</span><span>Experiments".</span><br /><span>Information about the software package can be found at<span></span></span><a href="https://www.millikenresearch.com/rcvdps.html" rel="noreferrer" target="_blank" data-saferedirecturl="https://www.google.com/url?q=https://www.millikenresearch.com/rcvdps.html&source=gmail&ust=1666218593842000&usg=AOvVaw3tEgIILgfPj55nVWRwF5KW">https://www.millikenresearch.c<wbr>om/rcvdps.html</a><span> (including</span><span>installation instructions for Windows 8/10) and the book to accompany the software at</span><a href="https://www.sae.org/publications/books/content/r-280/" rel="noreferrer" target="_blank" data-saferedirecturl="https://www.google.com/url?q=https://www.sae.org/publications/books/content/r-280/&source=gmail&ust=1666218593842000&usg=AOvVaw00lS2RtidL69G9-ScyB3zO">https://www.sae.org/publicatio<wbr>ns/books/content/r-280/.</a><span>The book</span><span>includes a 17 page chapter with sample problems to work using the</span><span>software along with worked solutions. SAE International student members receive a discount on books.</span>
+A number of simplified vehicle dynamics simulations are available onthe CD-ROM packaged with the workbook, "RCVD: Problems, Answers andExperiments".<br />Information about the software package can be found at<a href="https://www.millikenresearch.com/rcvdps.html" target="_blank" rel="noopener noreferrer" data-saferedirecturl="https://www.google.com/url?q=https://www.millikenresearch.com/rcvdps.html&source=gmail&ust=1666218593842000&usg=AOvVaw3tEgIILgfPj55nVWRwF5KW">https://www.millikenresearch.c<wbr />om/rcvdps.html</a> (includinginstallation instructions for Windows 8/10) and the book to accompany the software at<a href="https://www.sae.org/publications/books/content/r-280/" target="_blank" rel="noopener noreferrer" data-saferedirecturl="https://www.google.com/url?q=https://www.sae.org/publications/books/content/r-280/&source=gmail&ust=1666218593842000&usg=AOvVaw00lS2RtidL69G9-ScyB3zO">https://www.sae.org/publicatio<wbr />ns/books/content/r-280/.</a>The bookincludes a 17 page chapter with sample problems to work using thesoftware along with worked solutions. SAE International student members receive a discount on books.
@@ Line 65: / Line 65: @@
 * RCVD Speedway II
 * Moment Method
-* Ride/Roll Rate Calculator<br /><span></span>
+* Ride/Roll Rate Calculator<br />
 These programs, while simple in comparison with MRA's comprehensive vehicle modeling software, allow the user to investigate the basics of vehicle dynamics without testing a real vehicle. Key concepts from RCVD (such as oversteer/understeer, stability derivatives, force-moment analysis, load transfer and others) are illustrated through problems which are solved via the''Program Suite''. Such concepts, once understood in simple models, can be extended to more complex models or real vehicles.
+===OpenLAP===
 Open source lap time simulator coded in MATLAB. Students may find the simulator files in the Mathworks file exchange in the link below:

@@ Line 52: / Line 52: @@
 ===4 Wheel===
 ==Commercial Available Software==
-Formula Student Teams Available Software
+==<span>RCVD Program Suite</span>==
-===OpenLAP===
+<span></span>
 Open source lap time simulator coded in MATLAB. Students may find the simulator files in the Mathworks file exchange in the link below:

@@ Line 66: / Line 66: @@
 # OpenLAP Lap time simulation:<br />Distance based point mass simulation system using models from OpenVEHICLE and OpenTRACK.
-Tutorials to use the tool can be found at[https://www.youtube.com/channel/UC85SsayuuORJWhRHP-yX6nA Michael Chalkiopoulos' YouTube channel].
+Tutorials to use the tool can be found at [https://www.youtube.com/channel/UC85SsayuuORJWhRHP-yX6nA Michael Chalkiopoulos' YouTube channel].
 <youtube>https://www.youtube.com/watch?v=WWaouT6EhJ0&list=PLQiPsAzoaLqUtdVImOM4WjzoYrNUy7fve&index=2&t=0s</youtube>

@@ Line 57: / Line 57: @@
 ===OpenLAP===
 Open source lap time simulator coded in MATLAB. Students may find the simulator files in the Mathworks file exchange in the link below:
 [https://www.mathworks.com/matlabcentral/fileexchange/75063-openlap-lap-time-simulator https://www.mathworks.com/matlabcentral/fileexchange/75063-openlap-lap-time-simulator]
 Includes the following functions:
@@ Line 67: / Line 65: @@
 # OpenDRAG Straight line simulation:<br />Time based point mass simulation system using models from OpenVEHICLE.<br />Includes shifting duration.
 # OpenLAP Lap time simulation:<br />Distance based point mass simulation system using models from OpenVEHICLE and OpenTRACK.
 Tutorials to use the tool can be found at[https://www.youtube.com/channel/UC85SsayuuORJWhRHP-yX6nA Michael Chalkiopoulos' YouTube channel].
 <youtube>https://www.youtube.com/watch?v=WWaouT6EhJ0&list=PLQiPsAzoaLqUtdVImOM4WjzoYrNUy7fve&index=2&t=0s</youtube>

@@ Line 72: / Line 72: @@
-<a href="https://www.youtube.com/watch?v=WWaouT6EhJ0&list=PLQiPsAzoaLqUtdVImOM4WjzoYrNUy7fve&index=2&t=0s">https://www.youtube.com/watch?v=WWaouT6EhJ0&list=PLQiPsAzoaLqUtdVImOM4WjzoYrNUy7fve&index=2&t=0s</a>
+<youtube>https://www.youtube.com/watch?v=WWaouT6EhJ0&list=PLQiPsAzoaLqUtdVImOM4WjzoYrNUy7fve&index=2&t=0s</youtube>
 ==Vehicle Dynamics Modelling Best Pratices==
 A note on implicit versus explicit approach. If you ever worked in a coding team, or if you have inherited code from other people. Most certainly you have experience not knowing what a variable is. This is because we are using an implicit approach. We assume that everyone knows that "m" means mass, or that "wfl" means front left wheel speed. The issue with this approach is ambiguity. For that reason, it is always better to right a long name. Althougth, it takes more time, it is clear to anyone reading which variable of the vehicle you are talking about. Especially since teams cycle only lasts on average 2 years. You will have new comers trying to understand your code. For that reason you should make an extra effort to be sure that your variable are clear.

@@ Line 3: / Line 3: @@
 ==Simulation and Simulation Environment==
 <span class="fontstyle0">Every simulation aims at describing the observed system as accurately as possible in order to be able to model the behavior of the real system. A vehicle or part of a vehicle as well as, if necessary, a part of its environment can be referred to as a system.</span>
@@ Line 56: / Line 55: @@
 ==Vehicle Dynamics Modelling Best Pratices==
 A note on implicit versus explicit approach. If you ever worked in a coding team, or if you have inherited code from other people. Most certainly you have experience not knowing what a variable is. This is because we are using an implicit approach. We assume that everyone knows that "m" means mass, or that "wfl" means front left wheel speed. The issue with this approach is ambiguity. For that reason, it is always better to right a long name. Althougth, it takes more time, it is clear to anyone reading which variable of the vehicle you are talking about. Especially since teams cycle only lasts on average 2 years. You will have new comers trying to understand your code. For that reason you should make an extra effort to be sure that your variable are clear.

← Older revision		Revision as of 10:17, 30 May 2020
Line 54:		Line 54:
	==Commercial Available Software==		==Commercial Available Software==
	Formula Student Teams Available Software		Formula Student Teams Available Software
		+
		+
		+	==Vehicle Dynamics Modelling Best Pratices==
		+
		+	A note on implicit versus explicit approach. If you ever worked in a coding team, or if you have inherited code from other people. Most certainly you have experience not knowing what a variable is. This is because we are using an implicit approach. We assume that everyone knows that "m" means mass, or that "wfl" means front left wheel speed. The issue with this approach is ambiguity. For that reason, it is always better to right a long name. Althougth, it takes more time, it is clear to anyone reading which variable of the vehicle you are talking about. Especially since teams cycle only lasts on average 2 years. You will have new comers trying to understand your code. For that reason you should make an extra effort to be sure that your variable are clear.
		+
		+	Should I write fl_w or w_fl?
		+	Preferably write w_fl. The reason is that when you do a search on the programing language if all the variable start with FL, it won't help much. But if you start with their own letter it is easier to search. See image below as an example.
		+
		+	List of acceptable variables:
		+	m \| mass
		+	tf \| front_track
		+	tr \|rear_track
		+	wd \| weight_distribution
		+	Ixx
		+	Iyy
		+	Izz
		+	delta \| steering_angle\| steer_angle
		+	steering_angle_at_wheels _ steer_wheels
		+	Cf \| front_cornering_stiffness
		+	Cr \| rear_cornering_stiffness
		+	wf \| wheel_speed_front
		+	wr \| wheel_speed_rear
		+	wfl \| wheel_speed_front_left \| wheel_speed_fl
		+	wfr \| wheel_speed_front_right \| wheel_speed_fr
		+	wrl \| wheel_speed_rear_left \| wheel_speed_rl
		+	wrr \| wheel_speed_rear_right \| wheel_speed_rr
		+	ax \| longitudinal_acceleration \| long_acc
		+	ay \| lateral_acceleration \| lat_acc
		+	az \| vertical_acceleartion \| vert_acc
		+	vx
		+	vy
		+	vz
		+	x
		+	y
		+	z
		+	pitch
		+	roll
		+	yaw
		+	pitch_rate
		+	roll_rate
		+	yaw_rate

@@ Line 2: / Line 2: @@
+==Simulation and Simulation Environment==
 <span class="fontstyle0">Every simulation aims at describing the observed system as accurately as possible in order to be able to model the behavior of the real system. A vehicle or part of a vehicle as well as, if necessary, a part of its environment can be referred to as a system.</span>
@@ Line 11: / Line 10: @@
+==Types of Simulators==
 ===Laptime===
 ===Step Sim===
@@ Line 24: / Line 21: @@
 ===Transient===
 ==Vehicle Models==
-===
 {| class="wikitable"
 |-
@@ Line 48: / Line 45: @@
 |>500
 |}
-===
-======
 ===Point Mass===
 {{Main|Point Mass Model}}
@@ Line 57: / Line 54: @@
 ==Commercial Available Software==
 Formula Student Teams Available Software

← Older revision		Revision as of 10:13, 28 May 2020
Line 60:		Line 60:

	== References ==		== References ==
−	~~{{Reflist}}~~	+	Vehicle Dynamics, Modeling and Simulation. Dieter Schramm, Manfred Hiller, Roberto Bardini