Accelerometer without display A215 series

Vdcfor the aerospace industry

The Sherborne Sensors’ A200 range of Servo Accelerometers measure vector acceleration with high accuracy using a closed loop force balance torquer mechanism. A pendulous mass develops a torque proportional to the product of its mass unbalance and the applied acceleration. The movement of the mass is detected by a position sensor whose output signal is connected to a servo amplifier. The resulting current is fed into the torque motor which then develops a torque exactly equal to, but directly opposed to the initial torque from the pendulous mass. The mass then stops moving, assuming a position minutely differing from it’s initial zero ‘g’ position. Simultaneously, the current to the torque motor is fed through a stable resistor to provide an output voltage proportional to the applied acceleration. The system is electronically damped by means of a phase advancing network within the integrated servo amplifier. By adjusting the parameters of the servo amplifier and related electronic networks, the operating characteristics of a servo accelerometer can be optimised to suit a particular application. Available in ranges from ±1g to ± 20g 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 ISO 9001:2000 and AS9100B standards 1g bias option to compensate for earth’s gravity (A220 only) 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