referencesensor
A reference sensor is a sensor that provides a known, stable reference value used as a basis for comparison in measurement and control tasks. In control systems, the reference sensor supplies a reference signal or position that the controller uses to compute an error signal and drive actuators toward a target state. In robotics, CNC machines, and metrology, reference sensors are instrumental for establishing a coordinate origin, calibrating instruments, or aligning components before operation.
Common forms of reference sensors include mechanical endstops or limit switches, home switches that indicate a
In practice, the reference sensor is often part of a homing or calibration sequence. During homing, triggering
Key considerations for reference sensors include repeatability and drift, reliability under operating conditions, resistance to noise
See also: reference signal, homing, endstop, calibration, metrology.