Subject:
|
RE: Detecting tilt with an Accelerometer.
|
Newsgroups:
|
lugnet.robotics
|
Date:
|
Mon, 21 Oct 2002 18:20:21 GMT
|
Reply-To:
|
<RHEMPEL@nomorespamBMTS.COM>
|
Viewed:
|
904 times
|
| |
|
|
> A typical micromachined accelerometer WILL measure tilt of a platform that
> is not otherwise accelerating. The value the sensor returns will be
> g*sin(tilt angle) if the sensor is placed level on/in the platform.
<sound of Ralph eating his poorly thought out words>
John,
You are, of course, correct. The beam is always under 1 G if it is parallel
with the Earth's surface. In free-fall, the beam becomes "weightless" and
the accelerometer returns 0.
As you tilt the sensor, the beam deflects less and less and eventually
there is no strain and it returns 0 as well.
</sound>
Humbly,
Ralph
|
|
Message has 1 Reply:
 | | Re: Detecting tilt with an Accelerometer.
|
| (...) Stop eating for just a sec, and help me understand this. If a sensor (accelerometer) is parallel to the earth's surface, the reading should be zero, right? (no acceleration due to gravity) But, if the object holding the sensor begins to fall (...) (22 years ago, 21-Oct-02, to lugnet.robotics)
|
Message is in Reply To:
| | Re: Detecting tilt with an Accelerometer.
|
| A typical micromachined accelerometer WILL measure tilt of a platform that is not otherwise accelerating. The value the sensor returns will be g*sin(tilt angle) if the sensor is placed level on/in the platform. If the platform is accelerating, the (...) (22 years ago, 21-Oct-02, to lugnet.robotics)
|
14 Messages in This Thread:
 
  
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
This Message and its Replies on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
