Knowing the angle feedback is crucial for every type of application because it enables the controller to understand what he or she needs to control. For example, in electric vehicles, you need to know the angle feedback to increase the efficiency and obtain the required maximum torque. You can also observe another direct application of angle feedback in robotics. Robot arms need rotary position sensors so that they won’t miss their mark when they transfer products from one conveyor belt to another.
Other applications of rotary position transducers include automotive position sensing, valve control, industrial control, HVAC damper control, pedal position, steering wheel position and gear position.
What are the types of rotary position sensors?
The first type of rotary position sensor is called the hall effect sensor. It has a lower resolution, and it sells at a lower price. Another type is called the AMR or GMR sensor. This type offers more accuracy, as compared to the latter. You can also use a resolver sensor. It is comparably better than the hall effect and GMR sensors. However, resolver sensors cost more than the two types combined.
You can also use optical encoders if you want to detect light patterns to measure the angle. The last sensor category is referred to as the inductive sensor. Compared to the other types of sensors, it comes with a super cheap price tag.
What are the specifications of rotary position sensors?
When you choose a rotary position sensor, you must consider the specifications carefully. Each type of sensor has specific uses. For example, due to the durable design of hall effect sensors, they are best suited for extreme environments. Determine how you intend to use the sensor, so you can correctly select the design and specifications of the device.
The key features you must check when you purchase rotary position sensors include accuracy, maximum angle, analogue voltage, analogue currency, resistance, analogue voltage, and digital output. Among the key features, you must focus on looking at the accuracy and maximum angle because these two can determine how well you can use the sensor.
The maximum angle refers to the maximum angle measurement that the sensor can read. Some rotary position sensors can measure up to 5° while others can be used for angles less than 160°. On the one hand, the accuracy determines the reliability of the sensor’s reading.
Can I have a rotary sensor customised for my need?
If you can’t find a sensor that fits your needs, experts strongly recommend purchasing a customised sensor instead. Consult your target supplier or manufacturer and provide them with the specifications of the sensors you want. Engineers can build the sensors according to the measurement and design that you will provide.
Rotary position sensors act like transformers. Without this type of transducer, your machine or equipment may not function properly. Make sure you choose the right kind of sensor. If in doubt, you must seek advice from a trusted sensor supplier or manufacturer. They can always create the perfect transducer for your needs.