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pneumatic_ip_report

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pneumatic_ip_report [2016/03/06 23:36] – joaomatospneumatic_ip_report [2016/03/13 00:47] (current) – joaomatos
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   *Control Method (PD).   *Control Method (PD).
   *Estimating Gains Using LQR.   *Estimating Gains Using LQR.
 +
 +----
 +
  
 ** WEEK 02 ** ** WEEK 02 **
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   *Started to sketch the assembly when all the parts got in the lab.I had some trouble in what to use for the pendulum ( the pendulum from the original project was not on the lab). Once i got the pendulum ( 1/2in steel bar ) i had to figure out a way to fix the bar into the rotational encoder ( i'm waiting a friend print a support on a 3d printer for me ).    *Started to sketch the assembly when all the parts got in the lab.I had some trouble in what to use for the pendulum ( the pendulum from the original project was not on the lab). Once i got the pendulum ( 1/2in steel bar ) i had to figure out a way to fix the bar into the rotational encoder ( i'm waiting a friend print a support on a 3d printer for me ). 
   *Started to build the circuit.   *Started to build the circuit.
 +
 +----
 +
 +
  
 ** WEEK 03 ** ** WEEK 03 **
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   *Tested the encoders connection with the arduino and the readings.   *Tested the encoders connection with the arduino and the readings.
   *Tested the DAC and the Arduino Connection - digital input have to give the exact desired voltage output at the operational amplifier.    *Tested the DAC and the Arduino Connection - digital input have to give the exact desired voltage output at the operational amplifier. 
 +  *Started to post the tutorial steps.
  
 ** PROBLEMS ON WEEK 3 ** ** PROBLEMS ON WEEK 3 **
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 **Voltage output at the proportional valve:** I'm having trouble on the voltage output.Even if i change the digital value on the arduino code , the voltage at the proportional valve still at 8,4 V (it is expected the voltage to change from 0 to 10V when changing the digital input value at the arduino code). I rebuilt the circuit changing the operational AMP , DAC and all the resistances, but i still having trouble in controlling the voltage output to the proportional valve. I'm using the same Arduino code from the original project , and the DAC is the same also (so the problem is not the DAC connection with the arduino). The problem can be the decimal to binary function on the code , that i'm trying to re-write. **Voltage output at the proportional valve:** I'm having trouble on the voltage output.Even if i change the digital value on the arduino code , the voltage at the proportional valve still at 8,4 V (it is expected the voltage to change from 0 to 10V when changing the digital input value at the arduino code). I rebuilt the circuit changing the operational AMP , DAC and all the resistances, but i still having trouble in controlling the voltage output to the proportional valve. I'm using the same Arduino code from the original project , and the DAC is the same also (so the problem is not the DAC connection with the arduino). The problem can be the decimal to binary function on the code , that i'm trying to re-write.
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 +----
  
  
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   *Adjust the gains on the arduino code until the balance is good enough   *Adjust the gains on the arduino code until the balance is good enough
 +
 +
 +----
 +
 +** WEEK 04 **
 +
 +  *The problem of the voltage at the proportional valve was solved.
 +
 +{{youtube>3e65Pi_bIb4?medium}}
 +  *The connector that i printed broke and i will print another one.
 +
 +{{::suport.jpg?direct|}}
 +
  
pneumatic_ip_report.1457336178.txt.gz · Last modified: by joaomatos