Rotary Encoder Enhancements
Rotary Encoder Enhancements
Power Savings in Mobile Robotics
Encoders are an essential component in autonomous mobile robots (AMRs) that translate mechanical motion into electrical signals. Encoders also provide data on position, speed, distance and direction.
Types of encoders
Optical
- Medium temperature range
- High current consumption
- Not programmable
- Medium Package
Magnetic
- Narrow temperature range
- Medium current consumption
- Not programmable
- Medium Package
Capacitive
- Wide temperature range
- Low current consumption
- Programmable
- Small Package
A capacitive-based rotary encoder is comprised of a fixed body and one moving element that together forms a variable capacitor. As the encoder rotates, this capacitor produces a unique but predictable signal that can be used to calculate the position of the shaft and direction of rotation. (Source: Rotary Encoder Improvements Save Power in Mobile Robotics by Same Sky)
AMT Encoders
- Reliable in harsh environments
- Incremental, absolute & commutation versions
- Low power consumption
- Low current draw
Advantages of AMT capacitive encoders for AMRs
- Motor efficiency
- Durability
- Longer battery life
- Accuracy
Expanding applications for AMRs
Global AMR Market is expected to grow from $2.25 billion in 2025 to $4.56 billion by 2030 with a 15.1% CAGR. (Source: MarketsandMarkets)
Additional AMR applications
- Industrial mobile robots
- Medical service robots
- Smart agriculture robots
- Self-driving vehicles & drones