The Pendulum with Coils is a sensing and feedback assembly used inside compatible accelerometers. The pendulum responds to acceleration along the sensor input axis, while the attached coils interact with the torquer magnetic field to generate the restoring force required for closed-loop force balancing.
When acceleration is applied, inertial force causes a slight displacement of the pendulum around its flexure support. The accelerometer detects this movement through its displacement-sensing structure. The servo circuit then supplies current to the coils, producing electromagnetic torque in the opposite direction.
The assembly should be matched to the corresponding torquers, servo circuit, and internal clearances of the accelerometer. Pendulum geometry, coil characteristics, electrical connections and installation position should be verified before use.
Contact Andelu to confirm the required pendulum and coil configuration.
| Item | Description |
| Product Type | Pendulum and coil assembly |
| Sensor Type | Compatible accelerometer assembly |
| Primary Role | Inertial sensing and electromagnetic feedback |
| Sensing Function | Responds to acceleration through controlled pendulum displacement |
| Feedback Function | Coils interact with the torquer magnetic field to generate restoring torque |
| Works With | Servo IC, upper torquer and lower torquer |
| Compatibility Check | Pendulum dimensions, coil characteristics, electrical connections and internal clearance |
| Supply Scope | Pendulum assembly only; complete accelerometer not included |
Acceleration creates an inertial force on the pendulum, causing a small displacement around its flexure support. The accelerometer detects this movement and converts it into an electrical signal.
The coils interact with the magnetic field of the torquer assembly. When current passes through the coils, electromagnetic force produces the restoring torque used in the feedback loop.
No. The pendulum, coils, and torquers must have compatible dimensions, magnetic geometry, and working clearances.
Check the pendulum profile, coil connection, coil characteristics, mounting position and compatibility with the existing torquer assembly.
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