Re: PWM control with encoder regulation
- From: martin griffith <martingriffith@xxxxxxxxxxxxx>
- Date: Fri, 07 Oct 2005 17:28:08 +0200
On 7 Oct 2005 08:09:14 -0700, in sci.electronics.design "Andrew"
<xxragexx@xxxxxxxxx> wrote:
>This may sound crazy, but are there any chips available that will
>regulate a pwm output based on dc motor encoder input?
>
>For example, the chip would have encoder inputs, a desired speed input
>(0-5V), and a pwm output.
>
>So, basically, I select a speed 0-5V (or even input a pwm signal
>instead) and based on the encoder feedback, the chip increases or
>decreases the output pwm signal in order to adjust the dc motor speed.
>
>Buying a chip (or a motor driver board with this ability) could save me
>alot of time developing the PID control and circuitry to do this
>myself.
>
>I doubt a motor driver board exists that will do this and meet my specs
>(24VDC, 20A continuous, 20kHz), but if there is a possibility, I will
>also consider this.
>
>If anyone has some info on where to even look for something like this,
>I would really appreciate it.
google motion control IC
martin
.
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