Speed Detection of Motor by Using Rotor Position and Speed Detector

Estimation of Induction Motor Speed by EKF In Stationary Frame and Use of Rotor Flux and Study of Parameter Variations

Estimation of Induction Motor Speed by EKF In Stationary Frame and Use of Rotor Flux and Study of Parameter Variations

A Rotor Position/Speed Identification Method of Permanent Magnet Synchronous Motor for Low Speed Operating Condition and Parameter Perturbation ⋆

Accurate positioning of the motor requires high control performance for low-speed operation and motor’s parameter perturbation. In the AC motor vector control technology, the nonsingular higher-order terminal sliding mode observer of Insertion Permanent Magnet Synchronous Motor (IPMSM) is put forward based on the object current and voltage values to obtain the rotor position and speed signa. Th...

High-Speed Focus Inspection System Using a Position-Sensitive Detector

Precise and rapid focus detection is an essential operation in several manufacturing processes employing high-intensity lasers. However, the detection resolution of existing methods is notably low. This paper proposes a technique that provides a rapid-response, high-precision, and high-resolution focus inspection system on the basis of geometrical optics and advanced optical instruments. An ult...

DSP-based Extended Kalman Filter Estimation of Speed and Rotor Position of a PM Synchronous Motor

The paper concerns with the realisation of a sensorless drive with a permanent magnet synchronous motor. Position and angular speed of the rotor are obtained through an Extended Kalman Filter. The estimation algorithm does not require neither the knowledge of the mechanical parameters nor the initial rotor position, overcoming two of the main drawbacks of other estimation techniques. The drive ...