Setpoint control of networked systems via static output feedback integral controller

A Novel Online Multivariate Identification for Autotuning Speed Control in PMSM Drives

“…Based on the discrete form of (1), the motor state corresponding to the series of discrete points is acquired. Using any three consecutive points, a matrix equation (4) can be listed and shown as follows: Also, the linear matrix inequalities with feasible performance constraints are used for expression (4). The condition of geometric solution of expression (4) is the inequality…”

“…PMSM (Permanent Magnet Synchronous Motor) has been more and more popular in many industrial applications because of its advantageous features, simple structure, high torque-to-current ratio, high efficiency, and low maintenance cost [1][2][3]. Many PI (proportional-integral) speed control algorithms for PMSM drives are widely used in practical control applications owing to their simple control structure, ease of design, low cost, and effectiveness [4,5]. However, parameters of speed controllers are highly vulnerable to parameter variations and external disturbances, such as load variation, speed change, external unpredictable disturbance, and mechanical parameters of the motor's nonlinear change in PMSM drives.…”