3-axis accelerometer AAA215 | AAA220

piezoelectricIP65

Gravity referenced linear servo acceleration sensor with pivot-on-stone The AAA200 Series of Servo Accelerometers measure vector acceleration with high accuracy using a closed loop force balance torquer mechanism. All AAA200 Series Accelerometers operate as a closed-loop torque balance servo system. With reference to the illustration below the pendulous mass ‘A’ develops a torque proportional to the product of its mass unbalance and the applied acceleration. The movement of mass ‘A’ is detected by position sensor ‘B’ whose output signal is connected to an amplifier. The resulting current is fed into the torquer motor ‘C’ which then develops a torque exactly equal to, but directly opposed to the initial torque from the pendulous mass ‘A’. Mass ‘A’ stops moving, assuming a position minutely differing from it’s zero ‘g’ position. Simultaneously, the current to the torquer motor is fed through a stable resistor to provide an output voltage proportional to the applied acceleration. High resolution down to 0.05 mg Closed loop force balance system Flight qualified versions available Self-Test facility DC Input – DC Output Manufactured to AS9100C and ISO 9001:2008 standards 1g bias option to compensate for earth’s gravity (AAA220 only) Applications AAA210 | AAA220 Flight test monitoring Accident data collection Structural health monitoring Flight simulators Braking control on mass transit systems Road bed analysis Data acquisition systems Low frequency analysis