Moving system acceleration and inclination with reference to gravity.

Hi there!

Here is Tolic from Edinburgh.

Going to control moving system acceleration and inclination with reference to gravity. Expected inclination range is about ±5˚ expected accuracy 0.1˚ System will be controlled by PIC18F MCU. What AD parts can be recommended?

Thanks.

  • 0
    •  Analog Employees 
    on Jul 21, 2016 7:14 PM

    Since you mention that the system will be moving, what level of acceleration are you anticipating, in addition to the gravity contribution?  Is 0.1 degrees a maximum allowable error?  I would exercise care in this definition, as that could greatly influence what must be done to support that objective. 

  • Thanks for fast response.

    Expected acceleration will not exceed 2.5g

    ±0.1º error is a willable value, but life is life...

    Thanks.

  • 0
    •  Analog Employees 
    on Jul 21, 2016 11:42 PM
    Thank you! I beg your pardon, but I'm not sure what you mean when you say it is a "willable value." What type of an application are you working on? If that information is sensitive, could you give us a rough idea what type of production volume are you designing for and if you have any other constraints that we should consider in making this recommendation? 


  • Let me ask question in another way:

    I have to control moving system acceleration and system inclination with reference to gravity. Inclination range is about ±5˚.

    Expected level of acceleration, in addition to the gravity contribution will be about 1.8g but not exceed 2.5g.

    What AD parts can be recommended and what accuracy can be expected?

    Application will be manufactured in small butch production. Each sample will be calibrated and adjusted separately.

    Thanks.

  • 0
    •  Analog Employees 
    on Jul 22, 2016 9:41 PM

    We are releasing a brand new product, the ADXL355, at the end of next week, which will be a very good fit for what you are trying to accomplish.  I am not able to share a datasheet on this yet, but in approximately one week, it will be available at the following web site: www.analog.com/ADXL355