dynamic dynamic digital output

[Smoofo]

I want to increase the speed of a stepping motor to become higher speed and after that I would change the speed of the working motor.

So I need a dynamic digital signal.

How could I make this or could I control the counter on my connector block?

Thank you for helping me.

Smoofo

[emvee]

Hi Smoofo,

If you want help on this, more information is needed like which hardware you are using and how it is connected to the stepping motor.

[Smoofo]

Hi emvee,

I have a controler for my steppimg motor who only need digital signals. As faster it becomes the puls as faster it will run. 

So I need a dynamic digital signal.

How could I make this or could I control the counter on my connector block to increase the pulses and control them during the running.

Thank you

Smoofo

[emvee]

Hi Smoofo,

I can still not answer your question as I do not know what hardware you are using. Please give the type number of the card you are using and how it is connected to the stepping motor.

[Smoofo]

Ok sorry I forgot this.

I have a PCMCIA-Card "DAQCard-6036E" which is conected to a "SCB-68" 68-Pin Shielded Connector Block.

Thank you very much for your help.

[emvee]

I am not familiar to this card, and do not know the details of the stepping motor control. But if I assume that you just have to generate pulses with a variable frequency (0-100 Hz?) you can use two methods I think:

1. Change the generation clock from 0-100 Hz
   
2. Keep the generation clock fixed at a high clock rate (5 KHz) and modulate the data to make the 0-100 Hz pulses

Maybe even use the counters of the DAQCard-6036E card...

[Smoofo]

Thank you for answering so fast.

The prolem that I have is: With every puls the motor is doing one stepp. So if I have a frequenz of 200Hz the Motor is doing 200 Stepps per secund.

This works till 700Hz after that the frequez for starting is to high so I need at first a slow frequenz of the puls and than increas them to the maxim of 4000Hz.

So the problem is that I don't know how I can  control the pulses or generate them that I can control and varied the speed of the motor during it works.

Do you know solution of my problem?

Thank you again

[emvee]

Hi Smoofo,

Why don't you just increase the frequency using the normal function to set the sampling frequency? Maybe you will have a (very) short hick-up but with a modern computer that should be that short that it will not have any effect.

NB: What programming environment are you using? Can you post the code you are currently using?

[Smoofo]

Hi,

one more question to this problem.

What do you mean with normal function for sampling a frequency.The normal signal simulation has problems increasing to 4kHz.

I know it sounds easy but it still would not work.

I only won't to Increase the freaquency from a digital output signal from 0-4kHz!

Thank you

[Smoofo]

Sorry for my english I mean

I only WANT to Increase the freaquency from a digital output signal from 0-4kHz!