Robotics
www.ams.com/MPS
Position sensors for robotics – sensing and controlling
the robotic joint systems
-Complete magnetic stray field immunity
-Adherence to the most stringent safety requirements
-Ultra-high precision to ensure system reliability
-Higher durability and lower system costs (no magnetic shield)
We provide innovative
analog solutions to
the most challenging
applications in sensor
and sensor interfaces,
power management,
and wireless.
General Description
Position sensing is key for robots to control position, orientation or motion of the robotic joints. ams’ contactless position sensors offer a high-resolution IC solution that is ideally
suited for sensing and controlling the position of the joint systems for humanoid, industrial, surgical and security robots. Our position sensors are designed with ams’ patented
differential sensor technology that ensures complete immunity to any external magnetic stray fields. The ICs are designed for fast and absolute-angle measurements over a full
360-degree range.
Benefits
- Precise and contactless angle measurement
- Very low power consumption
- High reliability
- High precision
- User programmable zero position
- Absolute rotary position sensing over 360°
- Immune to external magnetic stray fields
Maximum Rotation Angle
Output Type*
Magnetic Field Range (mT)
AS5048A
AS5600
AS5510
360°
360°
360°
linear
SPI
SPI, PWM
Analog,
PWM, I 2C
I 2C
30 to 90
30 to 70
30 to 90
10 to 50
0.09 (12bit)
0.022 (14bit)
0.09 (12bit)
10 bit
Supply Voltage nom. (V)
3.3
3.3 or 5.0
3.3 or 5.0
3
Maximum Supply Current
(mA)
8.5
15
6.5
3.5
Power down
(3µA)
-
Automatic
(1.5mA)
Power down
(25µA)
-40 to 85
-40 to 150
-40 to 125
-30 to 85
SOIC8
WLCSP or
SOIC8
Output Resolution
Low Power Mode
Operating Temperature (°C)
Applications
AS5055A
QFN-16
(4x4x0.85mm)
Package
TSSOP14
* Note: Automotive qualified part AS5147 (-40° - +150° Celsius) available
- Robotic joint positioning
- Motor position and motion control
- Miniature closed-loop position control
- Distance or force detection using position sensor
- RC-Servo motor position feedback
- Angle segment position detection
- Camera lens control
Target markets for advanced robotics
-Industrial
- Professional service
- Domestic service
- Security and defense
-Space
- Research and education
- Micro and nano robots
Body Part
ams Solution
Head
In the majority of robots, acoustic, infrared, chemical or camera sensors are located
in the head section. It is therefore necessary to obtain the precise angular position
to control the head. In addition, the positioning of the head could also require the
control of up to three axes.
(AS5048 precise 14bit angular position sensor)
Allows for increased camera performance, the camera modules need to integrate
the focus and zoom functionality with high resolution in a very small space.
(AS5600 angular position sensor with angle segment programming,
AS5510, the smallest position sensor for focus or zoom functionality)
Shoulder,
Hip, Wrist
The arms and legs of the robot are connected over the shoulder and hips. These
joints are flexible on two axis, requiring very precise and reliable low-power position
sensors. Often the angular range is limited to an angle segment. With angle segment
programming, the full output swing can be applied to a smaller angular range.
(AS5600 angular position sensor with angle segment programming,
AS5055A angular position sensor with low- power consumption)
Shoulder
Elbow,
Knee
Similar to the shoulders and hip, the joints in the elbows and knees also use an angle
segment sensor. Typically, these are flexible on one axis.
(AS5600 angular position sensor with angle segment programming)
Hip
Finger
Depending on the handling requirements for robots, the hands are equipped with
fingers that can be robotically controlled. These actuators are limited in space and
require a small-size and low-power feedback solution. Furthermore, force can be
calculated by measuring a small position change of the rigid parts for the frame that
are bended as a result of the load.
(AS5600 angular position sensor with angle segment programming,
AS5510 smallest linear low-power position sensor)
Ankle
Typical areas for position sensing in robots
Head
Elbow
Wrist
Finger
Knee
Ankle
To ensure good stability, walking robots use the fast and high-resolution angle output
of an angular segment sensor in the ankle joint.
(AS5600 angular position sensor with angle segment programming)
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products@ams.com
© 01/2015 by ams
Subject to change without notice
Headquarters
ams AG
Tobelbader Strasse 30, 8141 Unterpremstaetten, Austria
Phone +43 3136 500-0 · Fax +43 3136 525-01
Sales Offices Worldwide
sales-europe@ams.com
sales-asia@ams.com
sales-americas@ams.com