Publication detail

NEW TRENDS IN DESIGN AND CALIBRATION OF ACCELEROMETERS

Stanislav Klusáček

Original Title

NEW TRENDS IN DESIGN AND CALIBRATION OF ACCELEROMETERS

English Title

NEW TRENDS IN DESIGN AND CALIBRATION OF ACCELEROMETERS

Type

conference paper

Language

en

Original Abstract

Accelerometers are gaining ground in many military, aerospace and automobile applications thanks to reductions in price and size, greater operating ranges, higher resonant frequencies, lower amplitude ranges, MEMS technology, and integral electronics, but several challenges remain. A knock sensor is an acceleration transducer for ignition systems of automobile engine, which incorporate knock control. A knock sensor uses a piezoelectric element to measure the inertial forces exerted upon seismic mass. Knock sensors play a dual role on engines. Like other sensors, knock sensors monitor engine operation to optimize performance. In addition, knock sensors protect the engine against power-robbing, and potentially destructive, engine knock. The main goal of calibration is to measure the frequency response of the sensors. The typical frequency range and vibration amplitude are from 5 kHz to 15 kHz and approximately 100 m/s2. Calibration techniques of knock sensors may be divided into two sections: Mechanical methods and electrical method. Mechanical methods use to exited shaker or modal hammer. This calibration method is characterized by excellent accuracy and repeatability. Principle of electrical method lies in short electrical pulse excitation. The pulse is fed into the transducer via transformer, which decouples the excitation and the response signal. The advantages of this method are in the simplicity, testing is very fast and possibility automated testing. Testing methods can be extended to other types of transducers such as accelerometers.

English abstract

Accelerometers are gaining ground in many military, aerospace and automobile applications thanks to reductions in price and size, greater operating ranges, higher resonant frequencies, lower amplitude ranges, MEMS technology, and integral electronics, but several challenges remain. A knock sensor is an acceleration transducer for ignition systems of automobile engine, which incorporate knock control. A knock sensor uses a piezoelectric element to measure the inertial forces exerted upon seismic mass. Knock sensors play a dual role on engines. Like other sensors, knock sensors monitor engine operation to optimize performance. In addition, knock sensors protect the engine against power-robbing, and potentially destructive, engine knock. The main goal of calibration is to measure the frequency response of the sensors. The typical frequency range and vibration amplitude are from 5 kHz to 15 kHz and approximately 100 m/s2. Calibration techniques of knock sensors may be divided into two sections: Mechanical methods and electrical method. Mechanical methods use to exited shaker or modal hammer. This calibration method is characterized by excellent accuracy and repeatability. Principle of electrical method lies in short electrical pulse excitation. The pulse is fed into the transducer via transformer, which decouples the excitation and the response signal. The advantages of this method are in the simplicity, testing is very fast and possibility automated testing. Testing methods can be extended to other types of transducers such as accelerometers.

Keywords

Accelerometer, calibration, diagnostics

RIV year

2005

Released

30.06.2005

Publisher

Kielce University of Technology

Location

Kielce

ISBN

83-88906-26-7

Book

Proceedings of Spring School - Engineering for the Future

Pages from

1

Pages to

6

Pages count

6

BibTex


@inproceedings{BUT15171,
  author="Stanislav {Klusáček}",
  title="NEW TRENDS IN DESIGN AND CALIBRATION OF ACCELEROMETERS",
  annote="Accelerometers are gaining ground in many military, aerospace and  automobile applications thanks to reductions in price and size, greater operating ranges, higher resonant frequencies, lower amplitude ranges, MEMS technology, and integral electronics, but several challenges remain.
A knock sensor is an acceleration transducer for ignition systems of automobile engine, which incorporate knock control. A knock sensor uses a piezoelectric element to measure the inertial forces exerted upon seismic mass. Knock sensors play a dual role on engines. Like other sensors, knock sensors monitor engine operation to optimize performance. In addition, knock sensors protect the engine against power-robbing, and potentially destructive, engine knock. The main goal of calibration is to measure the frequency response of the sensors. The typical frequency range and vibration amplitude are from 5 kHz to 15 kHz and approximately 100 m/s2.  
Calibration techniques of knock sensors may be divided into two sections: Mechanical methods and electrical method. Mechanical methods use to exited shaker or modal hammer. This calibration method is characterized by excellent accuracy and repeatability. Principle of electrical method lies in short electrical pulse excitation. The pulse is fed into the transducer via transformer, which decouples the excitation and the response signal. The advantages of this method are in the simplicity, testing is very fast and possibility automated testing.
Testing methods can be extended to other types of transducers such as accelerometers.",
  address="Kielce University of Technology",
  booktitle="Proceedings of Spring School - Engineering for the Future",
  chapter="15171",
  howpublished="print",
  institution="Kielce University of Technology",
  year="2005",
  month="june",
  pages="1--6",
  publisher="Kielce University of Technology",
  type="conference paper"
}