Load torque and moment of inertia observability analysis for alternating current drive sensorless control

2012 ◽  
Author(s):  
Ivo Herman ◽  
Pavel Vaclavek
Keyword(s):  
Sensorless Control ◽  
Alternating Current ◽  
Current Drive ◽  
Moment Of Inertia ◽  
Load Torque ◽  
Observability Analysis

Synergetic control of permanent magnet synchronous motor based on load torque observer

2018 ◽  
Vol 233 (8) ◽  
pp. 980-993 ◽  
Author(s):  
Tao Wang ◽  
Jikun Li ◽  
Yuwen Liu
Keyword(s):  
Control Theory ◽  
Permanent Magnet ◽  
High Efficiency ◽  
Sliding Mode ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Moment Of Inertia ◽  
Load Torque ◽  
Synergetic Control ◽  
The Moment

The control of permanent magnet synchronous motor has become an important research, and many control methods have been developed because of its high efficiency and energy-saving characteristics. This article proposes a new motor control approach based on synergetic approach in control theory (SACT) and sliding-mode control (SMC). Since the load torque of the motor will change, the moment of inertia will increase in the experiment. The load torque is estimated by the sliding-mode observer. The moment of inertia is calculated by the least squares method by adding a forgetting factor. The practical application of synergetic control theory broadens the train of thought to meet the demand of high-performance motor drive further. The simulation and experimental results show that this control scheme in this article can improve the transient response and system robustness of dynamic systems.

Design of current drive and alternating current temperature control system for high-precision laser

2019 ◽  
Vol 48 (9) ◽  
pp. 905004
Author(s):  
缪存孝 Miao Cunxiao ◽  
邢国柱 Xing Guozhu ◽  
刘建丰 Liu Jianfeng ◽  
万双爱 Wan Shuang′ai ◽  
杨 竞 Yang Jing ◽  
...  
Keyword(s):  
Control System ◽  
High Precision ◽  
Temperature Control ◽  
Alternating Current ◽  
Current Drive ◽  
Temperature Control System

scholarly journals Analysis of sensorless control of brushless DC motor using unknown input observer with different gains

2017 ◽  
Vol 68 (2) ◽  
pp. 99-108 ◽  
Author(s):  
Mitesh B. Astik ◽  
Praghnesh Bhatt ◽  
Bhavesh R. Bhalja
Keyword(s):  
Sensorless Control ◽  
Estimation Algorithm ◽  
Dc Motor ◽  
Brushless Dc Motor ◽  
Unknown Input ◽  
Unknown Input Observer ◽  
Load Torque ◽  
Brushless Dc ◽  
Control Scheme ◽  
Simulation Results

Abstract A sensorless control scheme based on an unknown input observer is presented in this paper in which back EMF of the Brushless DC Motor (BLDC) is continuously estimated from available line voltages and currents. During negative rotation of motor, actual and estimated speed fail to track the reference speed and if the corrective action is not taken by the observer, the motor goes into saturation. To overcome this problem, the speed estimation algorithm has been implemented in this paper to control the dynamic behavior of the motor during negative rotation. The Ackermans method was used to calculate the gains of an unknown input observer which is based on the appropriate choice of the eigenvalues in advance. The criteria to choose eigenvalue is to obtain a balance between faster convergence rate and the least noise level. Simulations have been carried out for different disturbances such as step changes in motor reference speed and load torque. The comparative simulation results clearly depict that the disturbance effects in actual and estimated responses minimizes as observer gain setting increases.

Designing of alternating-current drive with reduced noise level

2015 ◽  
Vol 86 (5) ◽  
pp. 264-269 ◽  
Author(s):  
S. S. Anan’ev ◽  
A. N. Golubev ◽  
V. A. Martynov ◽  
V. D. Karachev ◽  
A. V. Aleinikov
Keyword(s):  
Noise Level ◽  
Alternating Current ◽  
Current Drive

Operating Mechanism of Quantum-dot Light-emitting Diodes Under Alternating Current-Drive

2021 ◽  
pp. 1-1
Author(s):  
Shanhong Lv ◽  
Kaiyu Yang ◽  
Chaoxing Wu ◽  
Kun Wang ◽  
Rong Chen ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Light Emitting Diodes ◽  
Alternating Current ◽  
Current Drive ◽  
Operating Mechanism ◽  
Light Emitting
Sign in / Sign up

Export Citation Format

Share Document