# Support the M2 Cart Rotation Test

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#### Details

• Type: Story
• Status: Done
• Resolution: Done
• Fix Version/s: None
• Component/s:
• Labels:
• Story Points:
2
• Sprint:
TSSW Sprint - May 08 - May 22
• Team:
Telescope and Site
• Urgent?:
No

#### Description

Support the M2 cart rotation test.

#### Attachments

1. 15-05-23-M2-RBM-log .rtf
2 kB
2. 17-05-23-LUT-cart-rotation.rtf
9 kB
3. geometry.jpeg
2.77 MB

#### Activity

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Te-Wei Tsai added a comment - - edited

For the normal operation range, the cart rotation is in the clock-wise direction (A1 goes up: +Y, A4 goes down). When the cart is flat, (M2 face down), the TMA elevation angle is 90 degree and the zenith angle is 0 degree. When the cart rotates to straight (clock-wise), the TMA elevation angle is 0 degree and the zenith angle is 90 degree. This rotation is between "A2+A3" and "A5+A6". Because of the force direction of tangent link, A1 and A4 will not take the mirror's weight in the rotation process.

When the mirror is face down, the TMA elevation angle should be 90 degree and the M2 processed inclinometer also show ~90 degree.

The geometry can see:

Show
Te-Wei Tsai added a comment - - edited For the normal operation range, the cart rotation is in the clock-wise direction (A1 goes up: +Y, A4 goes down). When the cart is flat, (M2 face down), the TMA elevation angle is 90 degree and the zenith angle is 0 degree. When the cart rotates to straight (clock-wise), the TMA elevation angle is 0 degree and the zenith angle is 90 degree. This rotation is between "A2+A3" and "A5+A6". Because of the force direction of tangent link, A1 and A4 will not take the mirror's weight in the rotation process. When the mirror is face down, the TMA elevation angle should be 90 degree and the M2 processed inclinometer also show ~90 degree. The geometry can see:
Hide
Te-Wei Tsai added a comment -

Moved the rigid body movement.

Show
Te-Wei Tsai added a comment - Moved the rigid body movement.
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Te-Wei Tsai added a comment - - edited

We did the cart rotation today. We found that for the elevation angle between 90 and 0 degrees, the coordination system between the M2 and TMA should be the same. Note that at this moment, the cart is rotated in the clockwise direction (cart angles: 0 degree to 270 degree ==> this means the angle of cart would be 0 -> 350 -> 330 -> 300 -> 270 degree).

For the cart rotates in CCW, 0 degree to 90 degree.

Show
Te-Wei Tsai added a comment - - edited We did the cart rotation today. We found that for the elevation angle between 90 and 0 degrees, the coordination system between the M2 and TMA should be the same. Note that at this moment, the cart is rotated in the clockwise direction (cart angles: 0 degree to 270 degree ==> this means the angle of cart would be 0 -> 350 -> 330 -> 300 -> 270 degree). For the cart rotates in CCW, 0 degree to 90 degree.
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Te-Wei Tsai added a comment -

We found something strange for a small elevation range for the LUT of glass. Need to check it.

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Te-Wei Tsai added a comment - We found something strange for a small elevation range for the LUT of glass. Need to check it.
Hide
Te-Wei Tsai added a comment - - edited

For the LUT test, we test:
1. morning: Configurable_File_Description_20180831T092556_surrogate_handling.csv
2. afternoon Configurable_File_Description_20180831T092423_surrogate_optical.csv

Show
Te-Wei Tsai added a comment - - edited For the LUT test, we test: 1. morning: Configurable_File_Description_20180831T092556_surrogate_handling.csv 2. afternoon Configurable_File_Description_20180831T092423_surrogate_optical.csv
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Te-Wei Tsai added a comment -

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Wouter van Reeven added a comment -

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Wouter van Reeven added a comment - Thanks for all your effort!
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Te-Wei Tsai added a comment -
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Te-Wei Tsai added a comment - Logs from Italy team: 1. 15-05-23-M2-RBM-log .rtf 2. 17-05-23-LUT-cart-rotation.rtf

#### People

Assignee:
Te-Wei Tsai
Reporter:
Te-Wei Tsai
Reviewers:
Andy Clements, Pablo Zorzi, Wouter van Reeven
Watchers:
Pablo Zorzi, Te-Wei Tsai, Wouter van Reeven
0 Vote for this issue
Watchers:
3 Start watching this issue

#### Dates

Created:
Updated:
Resolved:
Start date:
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#### Jenkins

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