Application

Definition of Linear Accelerometer

   Linear accelerometers are meters that measure the acceleration of a moving carrier line. Accelerometers are important flight correction components in flight control systems. In inertial navigation systems, high-precision accelerometers are one of the most basic sensitive components. Accelerometers are important tools for investigating flight flutter and fatigue life of aircraft in various types of aircraft flight experiments. A sensor that can sense acceleration and convert it into a usable output signal.

  Linear accelerometer is the inertial sensitive element of inertial navigation, inertial guidance and control detection equipment, and its output is proportional to the motion acceleration of the carrier (aircraft, missiles, automobiles, etc.) or a certain function, which is widely used in aviation, navigation, aerospace and weapon guidance and control.

   Accelerometer is one of the main inertial components of inertial measurement and navigation system, its output is proportional to the acceleration of the vehicle. Its principle of action is based on Newton's laws of classical mechanics. The accelerometer measures the linear acceleration of the carrier, the motion speed can be obtained by integrating once, and the position data can be obtained by integrating twice. Therefore, in the inertial measurement and navigation system, the accuracy index of the accelerometer is very high, usually requires the sensitivity of the accelerometer is very high, and the stability of various performance coefficients is also very high.

Types of linear accelerometers

  There are many ways to measure acceleration, and several different kinds of accelerometers can be manufactured for each measurement method. There are various classification methods for a wide variety of accelerometers, which can be divided into linear displacement accelerometers and pendulum accelerometers according to the motion mode of detecting mass. The former is to measure the linear displacement of detecting mass along the direction of guide rail, and the latter is to measure the angular displacement generated by the swing of detecting mass around the support. According to the form of measurement system, there are two categories: open loop type and closed loop type. The open-loop accelerometer is also called a simple accelerometer, and the measured acceleration value is directly output by the sensor, signal sensor and amplifier. This kind of accelerometer is simple in construction, small in size, low in cost, but low in precision. The closed-loop accelerometer is also known as the force balance accelerometer (also known as the force feedback accelerometer or servo accelerometer), and the measured acceleration becomes an electrical signal and is added to the torquer to restore the balance position of the moving mechanism. Due to the use of force feedback loop, the accelerometer has high precision and strong anti-interference ability. According to the output signal, the accelerometer, the integrating accelerometer and the double integrating accelerometer provide acceleration, speed and distance information respectively. According to the measured degrees of freedom, there are single-axis, two-axis, three-axis accelerometers. According to the principle of measuring acceleration, there are piezoelectric, vibrating string, vibrating beam, optical and pendulum accelerometers. According to the way of support, there are liquid floating, flexible and electrostatic accelerometers.

  The linear accelerometer has a wide range of uses, such as the guidance and navigation system of aircraft, the leveling system of various reference stations and platforms, the inclination measurement system of geological prospecting drilling, the monitoring system of building foundation and road bridge, and the vehicle leveling and collision avoidance system, which shows that the market demand is great.

  Linear accelerometer is one of the main inertial components of inertial measurement and navigation system. At present, the traditional force rebalancing pendulum accelerometers occupy the main market of accelerometers. The urgent demand for digitization of accelerometer output has promoted the development of quartz vibrating beam accelerometer. With the penetration of micro-electronic machining technology to inertial technology, micro-silicon accelerometers have been emerging and received wide attention.

If you want to get more details about quartz-accelerometer,pls visit https://www.ericcointernational.com/accelerometer/quartz-accelerometer/

For more information, please feel free to contact info@ericcointernational.com  

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