Rotary position sensors 3734328, 373-4328, 3586190, and 358-6190 are used for graders 140M 3 AWD 14L 16M 18M3 150 12m trucks 785 785G 794 AC.

Rotary position sensors 3734328, 373-4328, 3586190, and 358-6190 are used for graders 140M 3 AWD 14L 16M 18M3 150 12m trucks 785 785G 794 AC.

A rotary position sensor is a device used to measure the rotational position or angle of an object. It detects and measures the rotation angle of an object relative to a reference point and converts the position information into a usable output signal. In excavator operator monitors, rotary position sensors (such as Trimble's RS400) are commonly used to achieve precise slope control.

Core Functions and Working Principle

The rotary position sensor converts mechanical rotational motion into electrical signals (such as CAN bus signals) through internal encoders or potentiometers, and transmits this information to the control computer for processing.

Encoder: Converts rotation angle data into digital signals, suitable for high-precision measurement.

Potentiometer-type sensors: These output analog voltage signals based on resistance changes. They have a simple structure, but their resolution is affected by mechanical wear.

Applications in excavators

In excavator monitor systems, rotary position sensors work in conjunction with tilt sensors to monitor the rotation angle of the robotic arm and the tilt state of the machine body, thereby achieving automated slope control and balance adjustment. These sensors require high accuracy, anti-interference capabilities, and adaptability to outdoor environments.

Technological development trends

New rotary position sensors (such as the Nanochip MT911x/MT912x series) employ magnetic induction technology, featuring high linearity (±1.5%), low power consumption (quiescent current <2mA), and miniaturized packaging, making them more suitable for complex industrial scenarios.