IPB

Welcome Guest ( Log In | Register )

72 Pages V  « < 9 10 11 12 13 > »   
Reply to this topicStart new topic
Getting Unstuck in West Valley
MerAB
post May 17 2009, 04:51 PM
Post #151


Newbie
*

Group: Members
Posts: 13
Joined: 2-May 09
Member No.: 4758



Can you use the Microscopic Imager to see under the Rover? Or can you use maybe the robotic arm as a "mirror"? So we could say whether the Rover touches the ground.
Go to the top of the page
 
+Quote Post
333
post May 17 2009, 06:03 PM
Post #152


Newbie
*

Group: Members
Posts: 1
Joined: 27-October 04
Member No.: 104



QUOTE (RoverDriver @ May 17 2009, 05:28 PM) *
That is pretty awesome! If only that model had working rocker-bogie system the state of the wheels would have been represented with even more fidelity. If only I could use flour in the testbed but I was told it is a fire hazard. And cinnamon too! The ISIL would smell so good!

Paolo


Have you considered using a mixtures of glass microballoons & sand or cement to simulate flour for the beautiful but deadly white sand traps of Mars? smile.gif
Go to the top of the page
 
+Quote Post
edwinkite
post May 17 2009, 07:11 PM
Post #153


Newbie
*

Group: Members
Posts: 3
Joined: 8-February 04
From: Pasadena, CA
Member No.: 6



QUOTE (RoverDriver @ May 14 2009, 03:14 AM) *
If you can suggest a kernel filter, I am all ears. I used the Gimp to apply a bit of unsharp mask on the LF wheel MI image from Opportunity and got something, but still not too clear. If you have any SW and are good at deblurring, email me the image (or if there is any interest post it in the Opportunity side).

Paolo


If you know the distance between the camera and the target the Lucy-Richardson method is probably optimal. Use 'deconvlucy' in MATLAB (requires Image Processing Toolbox).

- Edwin Kite
Go to the top of the page
 
+Quote Post
alan
post May 17 2009, 11:10 PM
Post #154


Senior Member
****

Group: Members
Posts: 1859
Joined: 20-November 04
From: Iowa
Member No.: 110



QUOTE (MerAB @ May 17 2009, 11:51 AM) *
Can you use the Microscopic Imager to see under the Rover? Or can you use maybe the robotic arm as a "mirror"? So we could say whether the Rover touches the ground.

from one of Roverdriver's post in another thread:
QUOTE
Unfortunately, one of the outcomes of the recent series of warm reboots is that temporarily we cannot use the IDD. This is because in case the rover reboots while doing an IDD motion, we could lose the position knowledge of the various joints. If that happened we would need to re-calibrate the IDD joints and that is a procedure that was never done on Mars before, just at ATLO. Although I have been assured that this is a simple procedure I'm not so sure I would like to compound on the current state of the vehicle.

The use of the IDD is _not_ lost forever, we just need to make sure we can recalibrate on Mars: have a sequence ready to go in case the unfortunate happens.

Paolo
Go to the top of the page
 
+Quote Post
bruc
post May 17 2009, 11:59 PM
Post #155


Newbie
*

Group: Members
Posts: 2
Joined: 14-May 09
Member No.: 4777



QUOTE (RoverDriver @ May 17 2009, 12:28 PM) *
That is pretty awesome! If only that model had working rocker-bogie system the state of the wheels would have been represented with even more fidelity. If only I could use flour in the testbed but I was told it is a fire hazard. And cinnamon too! The ISIL would smell so good!

Paolo


Talc or gypsum powder could substitute for flour, and neither burns. --Bob
Go to the top of the page
 
+Quote Post
Astro0
post May 18 2009, 12:46 AM
Post #156


Senior Member
****

Group: Admin
Posts: 3108
Joined: 21-December 05
From: Canberra, Australia
Member No.: 615



When I took the Rover model out of its 'flour-cinnamon-based' ISIL, it left behind a rather pleasing effect smile.gif
Attached Image


EDIT: For what the 'real' ISIL will use for its soil testing...I'd say that they have that well in-hand and will come up with a perfect match based on the data they get from the Rover's IDD analysis. The nice thing about my flour-cinnamon version is that I can make a cake afterwards to celebrate the fact that Spirit has become 'unstuck'. wink.gif
Go to the top of the page
 
+Quote Post
nprev
post May 18 2009, 01:02 AM
Post #157


Senior Member
****

Group: Admin
Posts: 8340
Joined: 8-December 05
From: Los Angeles
Member No.: 602



That's so close in appearance to some of the actual HP soil exposure sites that it's downright eerie! blink.gif


--------------------
A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
Go to the top of the page
 
+Quote Post
RoverDriver
post May 18 2009, 02:01 AM
Post #158


Member
***

Group: Admin
Posts: 974
Joined: 29-September 06
From: Pasadena, CA - USA
Member No.: 1200



QUOTE (Astro0 @ May 17 2009, 04:46 PM) *
When I took the Rover model out of its 'flour-cinnamon-based' ISIL, it left behind a rather pleasing effect smile.gif
...

Wow. That reminds me of the testing we did in the ISIL back four years ago!

QUOTE (bruc @ May 17 2009, 03:59 PM) *
Talc or gypsum powder could substitute for flour, and neither burns. --Bob

Thanks! Will look into it.

Paolo


--------------------
Disclaimer: all opinions, ideas and information included here are my own,and should not be intended to represent opinion or policy of my employer.
Go to the top of the page
 
+Quote Post
mhoward
post May 18 2009, 06:22 AM
Post #159


Senior Member
****

Group: Moderator
Posts: 3430
Joined: 11-August 04
From: USA
Member No.: 98



Here's a QuickTime VR of the current location (4.1 MB).
Go to the top of the page
 
+Quote Post
Astro0
post May 18 2009, 07:13 AM
Post #160


Senior Member
****

Group: Admin
Posts: 3108
Joined: 21-December 05
From: Canberra, Australia
Member No.: 615



That's an awesome QTVR Michael.
The more I look at this spot, the more convinced I am that Paolo and others will get Spirit out. smile.gif
Attached Image
Go to the top of the page
 
+Quote Post
MerAB
post May 18 2009, 11:30 AM
Post #161


Newbie
*

Group: Members
Posts: 13
Joined: 2-May 09
Member No.: 4758



Here is a false colour panorama from spirit on Sol 1906, showing a piece of the rover deck:

Attached Image


Go to the top of the page
 
+Quote Post
bgarlick
post May 18 2009, 11:47 PM
Post #162


Junior Member
**

Group: Members
Posts: 53
Joined: 5-October 06
Member No.: 1227



IF Spirit is resting/stuck on a rock on its under side...

1) could the rover be lifted by rotating some wheels forward while rotating other wheels backwards to rotate/pinch/fold the rocker-bogie suspension and lever up the rover?

2) does the IDD have enough force to be able to lift the rover up if say the RAT was pushed down into the groud hard enough with the arm ? I could even imagine coordinating the IDD arm motion with the wheel motion to both drag the rover forward while pushing down and at the same time turning the wheels.
Go to the top of the page
 
+Quote Post
ElkGroveDan
post May 19 2009, 12:05 AM
Post #163


Senior Member
****

Group: Admin
Posts: 4750
Joined: 15-March 05
From: Sloughhouse, CA
Member No.: 197



Folks, let's help Paolo out by reading back through this discussion before asking him the same questions over and over again. He has answered some of these several times already.


--------------------
If Occam had heard my theory, things would be very different now.
Go to the top of the page
 
+Quote Post
briv1016
post May 19 2009, 04:58 AM
Post #164


Member
***

Group: Members
Posts: 239
Joined: 18-December 07
From: New York
Member No.: 3982



New press release regarding Spirit:

http://marsrovers.jpl.nasa.gov/newsroom/pr.../20090518a.html
Go to the top of the page
 
+Quote Post
alan
post May 19 2009, 05:41 AM
Post #165


Senior Member
****

Group: Members
Posts: 1859
Joined: 20-November 04
From: Iowa
Member No.: 110



love the reflective safety vest worn by the man with the shovel, gotta make sure you aren't run over by one of the high speed rovers
http://marsrovers.jpl.nasa.gov/gallery/pre...IMG_1623_br.jpg
Go to the top of the page
 
+Quote Post

72 Pages V  « < 9 10 11 12 13 > » 
Reply to this topicStart new topic

 



RSS Lo-Fi Version Time is now: 20th March 2019 - 09:53 AM
RULES AND GUIDELINES
Please read the Forum Rules and Guidelines before posting.

IMAGE COPYRIGHT
Images posted on UnmannedSpaceflight.com may be copyrighted. Do not reproduce without permission. Read here for further information on space images and copyright.

OPINIONS AND MODERATION
Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators.
SUPPORT THE FORUM
Unmannedspaceflight.com is a project of the Planetary Society and is funded by donations from visitors and members. Help keep this forum up and running by contributing here.