Acceleration Sensor (Transducer)

With the basic configuration shown below, acceleration applies inertia force to the weight and deforms the leaf spring proportional to the acceleration. This deformation is detected as strain, which allows acceleration to be measured. A key benefit of this is its ability to respond to static acceleration (0 Hz).

With the basic configuration shown, an applied acceleration displaces the weight from the neutral position. The displacement sensor detects the displacement quantity and sends via the servo amplifier the signal to the drive coil that is fixed to the weight support. When the signal current flows to the drive coil placed in a magnetic field generated by the permanent magnet, the electromagnetic force returns the weight to the original position. Since the current is proportional to the applied acceleration, a voltage proportional to the acceleration is output from both ends of the resistor inserted in the current loop.