CambridgeIC's linear position transducers measure position at the point of load, replacing ballscrews with a belt to deliver a lighter, more cost effective module.
Linear actuators frequently employ a stepper motor to position the load, or perhaps a or servo motor with encoder. These require a ballscrew to convert a precise rotary position to a linear one. Ballscrews are expensive, heavy and will often require protection from a harsh environment. Using a CambridgeIC linear position transducer can remove the need for a ballscrew.
The linear sensor is built from a printed circuit board (PCB). A PCB is stable and robust, and allows the sensor, its processing and motion control circuitry to be combined. Sensor processing is performed with a CambridgeIC Central Tracking Unit (CTU) chip such as the CAM204, which processes position information and communicates it to motion control circuitry.
- No mechanical or electrical contact between target and sensor
- Absolute sensing means no need for home and limit sensors
- CTU chip can also sense motor shaft angle for velocity feedback
- Yields a lighter system that is cheaper to manufacture and assemble