Alleyne Research Group / University of Illinois at Urbana-Champaign
EVPS project

Hints and Tricks


Matlab/Simulink

Matlab  
WinCon
Filter build error If having problem building a DSP filter design block, check the input the signal of the filter. It could be the input signal is Continuous that the filter can't handle. Just add a "zero-order hold" block from the "discrete" group. (09/25/2000)
   
   

 

Data Acquisition Boards
PCI-DAS1200 click here for detail
   

Word Processing

Graphics

[Q] How to convert a PowerPoint figure into .EPS format with preview?
[A] Step 1. Print that slide to a .pdf file using Adobe Acrobat PDF writer or Acrobat Distiller; Step 2. Open that .pdf file in Acrobat and crop it; Step3. Export as an .eps file with preview.(05/30/2002)

[Q] What are the best figure formats for Word?
[A] Based on experience with PTMC02_load.doc paper:
- Matlab Figures: .eps with preview (Be sure to use a PS printer to print the .doc file; or print .doc to .pdf first than print the hard copy)
- PowerPoint Figures: paste as a "picture" is relatively stable
- Photos: .jpg files are OK.


Trouble Shooting Log

Problem 070402:
Connection problem of 5B32 isolators in connection box \\Berkeley
Symptom:    ACMotor torque reading significantly smaller than its actual value, which can be deducted either from the ABB panel reading (% of motor max torque, approx. 121 N-m) or from the product of upstream pressure (MPa) and pump displacement (ml/rad). 
Temporary Workaround:    Try adjust the sensor gain inside WinCon to compensate the signal loss.
Diagnosis:    
1. Suspected hidden torque consumption, such as scraping sensor. Ruled out after sensor inspection;
2. Motor torque reading changes when shake the connection box;
3. Connection box opened, isolators found loosely plugged.
Solution:    Tightened the mounting screw on two 5B32s and one 5B39. (by Analog Devices)
           

Problem 070102a:
Rainbow cable connection mistake
Symptom:    Rainbow cable inside connection box overheat; WinCon does not build correctly.
Location:    \\Berkely
Cause of Problem:    Rainbow cable plugged to the connection board in the wrong direction.
Solution:     There is no error-proof notch on the rainbow cable plug!! Make sure it plugs to the gray ribbon cable and the connection board both in the right direction!
Documented by: Rong Zhang

Problem 070102b
Registry number of board PCI DAS1200 inside pci12pp.h mismatches the hardware
Symptom:    WinCon builds correctly but will not start, asking for code regeneration and download. 
Location:     \\Berkeley
Cause of Problem:     pci12pp.h copied from another machine writing over the correct file on \\Berkeley
Solution:    Recheck the Vendor and Part ID in "regedit" (See PCI Setup Guide for Details), and confirm the setting inside pci12pp.h
Documented by: Rong Zhang

Problem 070102c
Gray ribbon cable bad connection between PCI board and connection box
Symptom:    No DA outputs from CH0 and CH1 of DDA08 board
Location:    \\Urbana
Cause of Problem:    Loose connection of the gray ribbon cable (Pin 1-50) to the connection box. There is no mechanical lock or latch!!
Solution:     Make sure the the cable plugged in securely. 
Notes:    A note on the connection box panel says DA0@DDA08 was broken on 09/21/2000. This channel is confirmed functional after reconnecting the cable.
Documented by: Rong Zhang

Problem 062902
AC Motor Speed Sensor Failure
Symptom:    No speed reading from AC Motor speed sensor. Red indicator on the speed sensor driver remains on even when the motor is running.
Cause of Problem:    Bad connection between the pickup unit (about $80/ea) and the preamplifier (about $60/ea). 
Solution:    Cut the connection and re-solder it.
Documented by:     Rong Zhang

 

 

by Rong Zhang
updated 07/04/02