Why "rate random walk" exists on gyroscpe ?

In summary, the conversation discussed the concepts of stochastic error modeling and its application to MEMS inertial sensors. The article "Stochastic Modeling of MEMS Inertial Sensors" by Petko Petkov and Tsonyo Slavov was mentioned as a source of information. The conversation also touched on the error sources of angular random walk and rate random walk, which are caused by white noise in angular rate and angular acceleration, respectively. The presence of rate random walk was questioned in relation to direct measurements of angular rate from a gyroscope, and external influences and noise were noted as potential factors.
  • #1
kawabonga
3
0
hi
I read an article about stochastic error modeling, and I didn't understand this extract about error sources :
Angular random walk. This is an angular error process which is due to white noise in angular rate.
Rate random walk. This is a rate error due to white noise in angular acceleration.
how can the "rate random walk" be present, while the gyroscope directly angular rate ?
the article's title is : "Stochastic Modeling of MEMS Inertial Sensors " by Petko Petkov and Tsonyo Slavov
 
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  • #2
Some external influences can exert a torque on the system. It could also be related to your measurement which will have some noise.
 
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Related to Why "rate random walk" exists on gyroscpe ?

1. What is a "rate random walk" on a gyroscope?

A "rate random walk" on a gyroscope is a type of error that occurs when the measured rate of rotation is not constant, but rather fluctuates randomly over time. This can be caused by external factors such as temperature changes or imperfections in the gyroscope's construction.

2. Why does "rate random walk" occur on gyroscopes?

"Rate random walk" occurs on gyroscopes due to imperfections in their design and construction. These imperfections can cause the measured rate of rotation to fluctuate, resulting in errors in the gyroscope's readings.

3. How does "rate random walk" affect the accuracy of a gyroscope?

"Rate random walk" can significantly affect the accuracy of a gyroscope, especially over long periods of time. The errors caused by this phenomenon can accumulate and result in incorrect readings and measurements.

4. Can "rate random walk" be corrected or eliminated?

While it is not possible to completely eliminate "rate random walk" on gyroscopes, it can be minimized through careful design and calibration of the gyroscope. Additionally, advanced algorithms and filtering techniques can be used to reduce the impact of this error on the accuracy of the gyroscope's measurements.

5. What are some practical applications of understanding "rate random walk" on gyroscopes?

Understanding "rate random walk" is crucial for accurate navigation and orientation systems that rely on gyroscopes. This includes applications such as aircraft and spacecraft navigation, as well as in consumer electronics such as smartphones and drones.

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