What Is the Resolution of an Angle Sensor?

The resolution of an angle sensor refers to the smallest change in angle that the sensor can detect. It is an essential parameter for use in e-bike crank sensing applications. Higher resolution will help the motor controller start earlier when pedaling is required before the motor starts.

Some prefer to specify the resolution in steps or pulses per revolution.

Factors Affecting the Resolution of an Angle Sensor

The resolution of an angle sensor is affected by several factors, including the sensor’s design, the number of bits in the output signal, and the noise level. The design of the sensor determines the physical size of the sensing element and the accuracy of the measurement.

The number of bits in the output signal determines the number of discrete values that the sensor can detect. The noise level affects the accuracy of the measurement by introducing errors in the output signal.

Types of Angle Sensors

There are several types of angle sensors, and most of them have a limitation to the resolution.

Sensitivus’ inductive angle sensors typically have a resolution of 0.25 degrees, which is more than the typically 1-2 degree resolution required by most crank angle sensing scenarios for an e-bike.