Product Introduction

A variable reluctance resolver is a signal element that outputs voltage that varies with the rotor angle. Under the

periodic stability of the AC magnetic field generated by the excitation winding, the rotation of the rotor causes a

change in the air gap magnetic field between the stator and rotor, which is fed back to the inductance of the

secondary winding to change, thereby inducing a change in electromotive force and forming a voltage signal,

which is converted into a digital signal (i.e. angle signal) through A/D. The product transmission signal adopts

electromagnetic induction type, which is suitable for various harsh environments, so it is widely used in military

equipment fields such as aviation, aerospace, radar, as well as industrial fields such as automobiles, robots,

metallurgical machinery, textile machinery, etc.

Characteristics:

1/High speed rotation, the speed can reach 30000 RPM

2/Low cost, maintenance free, high reliability

3/Vibration and impact resistance, protection level: IP68

Working principle

Due to the same frequency but phase difference between the secondary voltage and the primary excitation

voltage of a rotary transformer, their amplitudes will vary as sine and cosine functions with the rotation angle.

Resolver Parameters

Remark:

1. Winding resistance is measured at 20°C~30°C

2. Output voage equtation

US1S3=KUR1RSCOS4 ∅

US2S4=KUR1RSIN4 ∅

The positive direction is the clockwise rotation of the rotor from the outlet end

Schematic Diagrem                                                                                 Output wave