What Is A Resolver Sensor?
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What Is A Resolver Sensor?

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Resolver sensors are a type of position sensor that detect the angular position of an object. They are used in various applications, including robotics, aerospace, and industrial machinery. This article will explore the workings and benefits of resolver sensors, as well as their applications and market trends.

Understanding resolver sensors

What is a resolver sensor?

A resolver sensor is a type of rotary position sensor that detects the angular position of an object. It consists of a stator and a rotor, with the rotor mounted on a shaft that rotates within the stator. The stator has two winding sets, the primary and secondary, which are arranged at right angles to each other. As the rotor rotates, it generates a voltage that is proportional to its angular position.

How does a resolver sensor work?

The resolver sensor works on the principle of electromagnetic induction. When an AC voltage is applied to the primary winding, it generates a magnetic field that induces a voltage in the secondary winding. The amount of induced voltage depends on the angle of the rotor. By measuring the induced voltage, the angular position of the rotor can be determined.

Types of resolver sensors

There are two main types of resolver sensors: absolute and incremental. Absolute resolvers provide a unique output for each position, while incremental resolvers provide a change in output for each position. Absolute resolvers are used in applications where the position must be known at all times, while incremental resolvers are used in applications where the position can be determined by counting the number of increments.

Benefits of resolver sensors

Accuracy and precision

Resolver sensors are known for their high accuracy and precision. They can detect angular position with an accuracy of up to 1 arcminute, which is much higher than other types of position sensors. This makes them ideal for applications where precise position control is required.

Durability and reliability

Resolver sensors are highly durable and reliable. They are designed to withstand harsh environmental conditions, such as extreme temperatures, humidity, and vibration. This makes them suitable for use in applications where other types of sensors may fail.

Applications of resolver sensors

Resolver sensors are used in a wide range of applications, including robotics, aerospace, and industrial machinery. In robotics, they are used to detect the position of robot joints and control their movement. In aerospace, they are used to detect the position of aircraft control surfaces and ensure safe operation. In industrial machinery, they are used to detect the position of rotating parts and ensure accurate positioning.

Resolver sensors in the market

Market trends and growth

The resolver sensor market is expected to grow significantly in the coming years. The increasing demand for high-precision position sensors in various industries, such as aerospace, automotive, and industrial automation, is driving the growth of the market. The rising adoption of resolver sensors in robotics and medical applications is also contributing to the market growth.

Leading resolver sensor manufacturers

Several leading manufacturers are operating in the resolver sensor market. Some of the key players include Moog, Honeywell, Northrop Grumman, and TE Connectivity. These companies are focusing on developing innovative resolver sensors with advanced features, such as digital output and wireless connectivity, to gain a competitive edge in the market.

Conclusion

Resolver sensors are a type of position sensor that detect the angular position of an object with high accuracy and precision. They are known for their durability and reliability, making them suitable for use in various applications. The resolver sensor market is expected to grow significantly in the coming years, driven by the increasing demand for high-precision position sensors in various industries. Leading manufacturers are focusing on developing innovative resolver sensors to gain a competitive edge in the market.

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