Resolver is a kind of electromagnetic sensor. It is a kind of AC motor to measure the rotation angle signal and the rotation axis position, speed and angular speed of the rotating object, composed of stator and rotor. As the primary side of the transformer, the stator winding receives the excitation voltage, and the excitation frequency is usually 400/1800/3000/10000Hz, etc. As the secondary side of the transformer, the rotor winding obtains the induced voltage through electromagnetic coupling.
what is a resolver?
Resolver is the current domestic professional name, referred to as "rotating change". Because the basic principle of its work is the Transformer, the air gap of the "transformer" on the stator changes periodically during the work process by rotating the rotor, and then forms the function of monitoring the angular displacement (speed and position) of the motor rotor, so its full name is rotating transformer, which can also be translated into Rototary Transformer. However, this name is rarely used in English, and the general English name is Resolver.
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A resolver is an electromechanical device used to measure angles and is particularly valued for its high precision and robustness under harsh conditions. It converts the angular position of a rotor to an electrical signal that can be interpreted by a control system. Here are some prominent applications of resolvers:
Aerospace and Aviation:
Resolvers are widely used in the aerospace industry due to their ability to operate accurately in extreme environments, including high temperatures, vibration, and electromagnetic interference. They are crucial for the feedback systems of aircraft flight controls, engine controls, and flap controls.
Automotive Industry:
Industrial Automation:
Resolvers are employed in various industrial machinery and robotics for precise motion control. They help in controlling the position and speed of robotic arms, machine tools, and other automated equipment, ensuring accuracy and repeatability.
Military and Defense:
In military applications, resolvers are used for positioning and navigation systems in both vehicles and weaponry. They provide critical data for targeting systems, radar platforms, and in the positioning systems of missiles and unmanned systems.
Marine Applications:
Energy Sector:
In renewable energy systems, such as wind turbines, resolvers help monitor and control the pitch of the turbine blades and the orientation of the nacelle. This ensures optimal efficiency and performance under varying wind conditions.
Medical Equipment:
The durability, accuracy, and ability of resolvers to operate in challenging environments make them indispensable in these fields, where precise angular measurement and control are essential.
