DC motor control-need help

[safin]

i need the circuit for the control of DC gear motor using optical encoder

 

[ronv]

Speed or position?

 

[misterT]

Here is one: **broken link removed**
Costs ~200 USD. Cheaper to buy than build your own.

If you are looking for a simple solution to a simple problem, you have to give a lot more information. Do you need to control positon/speed/torque? What is the resolution of your encoder? What kind of DC motor you have? What kind of gear you have? How accurate and how fast the control needs to be? Is it a dynamic (servo) control or a static regulation (like vinyl record player) problem? What is your budget?

It is possible to make a good control with relatively simple electronics, but we need to know all the details to be able to help you.

 

[safin]

Here is one: **broken link removed**
Costs ~200 USD. Cheaper to buy than build your own.

If you are looking for a simple solution to a simple problem, you have to give a lot more information. Do you need to control positon/speed/torque? What is the resolution of your encoder? What kind of DC motor you have? What kind of gear you have? How accurate and how fast the control needs to be? Is it a dynamic (servo) control or a static regulation (like vinyl record player) problem? What is your budget?

It is possible to make a good control with relatively simple electronics, but we need to know all the details to be able to help you.

i m Mech student
i want control DC motor(9V-0.5A)
using optical encoder
i want to know what will be ckt elements and how i will program PIC16F

 

[safin]

speed control

]
i m Mech student
i want control DC motor(9V-0.5A)
using optical encoder
i want to know what will be ckt elements and how i will program PIC16F

 

[Ubergeek63]

if all you are interested in is speed control, why bother with a micro? looking for some ridiculous accuracy?

 

[safin]

thank you for your reply
i have to make an encoder and counter circuit ,
how do i will make it

 

[Ubergeek63]

the encoder will give you frequency proportional to speed.

an LM2917 will give you voltage proportional to frequency.

a switching regulator will "regulate" the LM2917 voltage by changing the motor speed

 

[dougy83]

...Is it a dynamic (servo) control or a static regulation (like vinyl record player) problem?

I think it's a broken record in this case.

 

[safin]

thanks a lot