I001
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Customer Requirements:
Is remote control = wireless?
(Slack)
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Reid
|
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01.25.08
|
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I002
|
H-bridge =?= Motor controller
(see functional diagram)
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Controls
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01.25.08
|
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I003
|
Is regenerative braking achievable? Desirable for future teams
(E.H.)
[A022]
|
Bryan
Jon
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01.25.08
|
Micro Controller would have to be changed. Costly
|
I004
|
“Are Pugh Matrix rankings on engineer’s opinion or quantifiable facts”
(Drive)
(E.H.)
|
Andrew
|
|
01.25.08
|
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I005
|
Does MM need to be individually addressable?
-
Addressable with own receiver?
-
Controllable via single mote?
|
Electronics
|
|
01.25.08
|
Yes, ID needs to be required.
Yes, controllable by single mote.
|
I006
|
How to communicate Motor Module “Health?”
-
Store for post-run
-
Transmit wirelessly
-
Data transfer limitations of wireless network
(E.H.)
[A024]
|
Brendan
Phil
|
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01.25.08
|
Microprocessor does not have necessary memory for data logging; therefore wireless transfer of data is preferred.
|
I007
|
Susceptible design of bevel gears
(E.H.)
[A008]
|
Mechanical Design
Andrew
Matt
|
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01.30.08
|
Implement bracket to ensure good mesh
|
I008
|
Drive System:
-
Time to replace belt?
-
Time to replace bevel gear?
-
Time to replace wheel?
-
Gear ratio?
(E.H.)
|
Andrew
|
|
|
To be evaluated
|
I009
|
Critical Design Point:
-
Teeth mating
-
Miter gear misalignment
-
“Cantilevered shaft off of bearing is not a robust design”
-
Axels
(E.H.)
|
Mechanical Design
Andrew
Matt
|
|
01.30.08
|
Implement bracket to ensure good mesh
|
I010
|
“How do you even know that your drive system will work?”
-
motor curve
-
electrical constraints on motor
(E.H.)
|
Andrew
Jon
Bryan
|
|
01.30.08
|
Motor curves have been analyzed to find RPM with max efficiency. MC uses a fuse.
Steering motor is most concerning.
|
I011
|
Is duty cycle proportional to linear speed?
(Slack)
|
Controls
|
|
01.30.08
|
Close to proportional.
|
I012
|
In-rush current @ high duty cycles
(Slack)
|
Jon
|
|
01.30.08
|
MC uses a fuse.
Steering motor is most concerning.
|
I013
|
Correct speed requirement
- Is 10 in/s too much?
|
Andrew
|
|
01.25.08
|
“Sweet Spot” Speed ~ 29 in/s at 4:1 gear ratio
|
I014
|
Architecture of application level
(Slack)
|
Phil
|
|
01.30.08
|
See Sys DR material
|
I015
|
Backwards compatible software command sets
-
Software used?
-
Functionality?
-
Weaknesses
-
Improvements
-
P08201 approach
[A004]
|
Phil
|
|
01.30.08
|
QFD updated so Backwards compatibility is a requirement. RP10 Platform GUI has been studied.
|
I016
|
EM: Accuracy of Movement EM
-
“linear variation over transverse movement”
-
“tighten up target specs”
(E.H.)
[A013]
|
Andrew
Matt
|
|
01.30.08
|
One spec to ensure both functions and their impact on the system. Linear variation will be evaluated at 0, 15, 30, and 45 degrees from path of forward motion
|
I017
|
Wireless Pugh: Products cannot be compared to platforms which are not hardware.
|
Brendan
|
|
01.25.08
|
QFD updated
|
I018
|
What are the wireless functionality specs?
-
Commands & Data
-
Software overhead
-
Capacity with multiple products operating at once
-
Distribution (range)
(Phillips)
|
Brendan
Phil
|
|
01.25.08
|
200 B/s < Data rate <2000 B/s
~ 128 Nodes
Wireless protocol required to manage network
Networking is easier with Crossbow
|
I019
|
Is a current limiting device needed prior to the MC?
|
Jon
|
|
01.25.08
|
MC has fused sensor and additional senor not likely
|
I020
|
What pre-fab circuit?
-
If Freescale chip, support choice (yes, a faculty supported chip is a smart choice)
-
Disadvantages to Freescale?
(E.H.)
|
Brendan
Jon
|
|
01.25.08
|
Freescale board chosen.
Circuit required if Zigby
|
I021
|
What export controls might limit the shipping of a RP1 MM to INSA, in France?
(E.H.)
|
Emilien
|
|
MSD II
|
|
I022
|
Robotics Club inability to maintain members
|
|
|
N/A
|
Collaboration has been pursued. Out of the scope of the project.
|
I023
|
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I024
|
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I025
|
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I026
|
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I027
|
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I028
|
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I029
|
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I030
|
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I031
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I032
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