Arduino: noisy motors while not moving? Why?

Hi, I made a 2 dof, and my motor is 350W, I uesd this:

but my motors will make noisy while not moving, and I test this
http://www.xsimulator.net/community...-motors-while-not-moving-check-this-out.6697/
Motor's noisy will be less, but as shown in Fig 1, 2, and 3, the feedback line(the green one) will jump while not moving ,and sometimes good and sometimes bad,
what if we can add same electrical components on the circuit to block out those noise?
Fig 1

Fig 2

Fig 3

Try a deadzone of 1 or 2.

PS: Figure 3 shows your potentiometer signal, which is pretty noisy.

PS2: I remember someone used capacitors on the pot to reduce the noise...but I dunno where to find this posting yet.

What pots are you using.
More than 20kohm?

Thank you!

I changed this parameter but futile.My motors are not change and the same noisy.
The strange thing is even the same parameters as yesterday，my motor also better than yesterday.
So it's affected by weather？

Only 10kohm， so I should test 20kohm?

I have some questions:
1 Whether if the quality of potentiometer will affect the sound of the motor while not moving ?
2 Whether if the resistance value of potentiometer will affect the sound of the motor while not moving ?How to select the resistance value of the potentiometer？

10kohm potentiometer is OK.

Make sure your leads running from your pot is not together with your motor power leads.
It would be best if you twist the power leads together or run the lead through a ferrite ring a couple of times.
You can even plait(like in hair) the three potentiometer leads and that will help.
Cheers Andy

Let me try

ok thank u

hi, on my project i used 10 ohm pots ,and with my heigth the motors dont make any noise ,but if i slide my chair forward or back the balance point change , the motors start to do some noise always fighting the unbalanced heigth,try to change your pot links ,that also can cause the same isses,

It may because you need to t some smoothing in, the small movements are causing lots of small movements which is the noise your hearing

Aduino your code directly reads the value of the potentiometer and uses this unique data to make calculations?

To minimize noise, your code can also make several successive readings and take the average of these readings to perform the calculation of position correction

What cable uses you? shielded?


Votre code Arduino lit directement la valeur du potentiomètre et utilise cette unique donnée pour effectuer les calculs ?
Afin de minimiser le bruit, ton code peut également faire plusieurs lectures successives et prendre la moyenne de ces lectures pour effectuer les calcul de correction de position
Quel câble utilise-tu ? Blindé ?

Sometimes increasing the deadzone on smc3utils on the motor that make noises could help, I´ve got 2 on my rigth motor an now doesn´t make any noise.

another thing to check is the ground of the power or just the motor may be in bad conditions

Increase in thedeadzoneisasolutionbutthisisnotanidealsolutionbecausesmalleffectsmaydisappearinpartinthisdeadzone

Augmentation de la zone morte est un solution mais ce n'est pas une solution idéale car les petits effets peuvent disparaître en partie dans cette zone morte !

For diagnosis, it would in any position of the simulator's problem appears

Pour plus de diagnostic , il faudrait dans quelle postion du simulateur son problème apparait

try increasing the fpwm, the value that works fine for me with a similar hardware is 35 khz and with the fpid on 1, another thing I see is that the power max is too low. In my configuration is at maximum value. It works may be not for your hardware. But is something to try.

The lack of power would be felt mainly in the simulator is most inclined involving maximum effort

When simulator is in neutral position ie horizontally, if the moving party's center of gravity is positioned, the effort to provide the engine is minimum. It's the universal joint that absorbs the efforts!

The abnormal play in one or the engine is not excluded: Check!




Le manque de puissance se ferait sentir principalement dans le simulateur est le plus incliné impliquant l'effort maximal

Lorsque de simulateur est en position neutre c'est à dire à l'horizontal , si le centre de gravité de la partie mobile est bien placé, l'effort à fournir pas les moteurs est minimum . C'est le cardan qui encaisse les efforts !
Du jeu anormal dans un ou les moteurs n'est pas exclu : A vérifier !

I think you are spamming threads...