Precision Position Control of PMSM using Neural Observer and Parameter Compensator

Jong-Sun Ko; Young-Ger Seo; Hyun-Sik Kim

Precision Position Control of PMSM using Neural Observer and Parameter Compensator

Jong-Sun Ko

Young-Ger Seo

Hyun-Sik Kim

Vol. 8, No. 4, pp. 354-362, Oct. 2008

10.6113/JPE.2008.8.4.354

Permanent magnet synchronous motor

Neural deadbeat observer

Parameter compensator

Back-propagation method

PDF

Abstract

This paper presents neural load torque compensation method which is composed of a deadbeat load torque observer and gains compensation by a parameter estimator. As a result, the response of the PMSM (permanent magnet synchronous motor) obtains better precision position control. To reduce the noise effect, the post-filter is implemented by a MA (moving average) process. The parameter compensator with an RLSM (recursive least square method) parameter estimator is adopted to increase the performance of the load torque observer and main controller. The parameter estimator is combined with a high performance neural load torque observer to resolve problems. The neural network is trained in on-line phases and it is composed by a feed forward recall and error back-propagation training. During normal operation, the input-output response is sampled and the weighting value is trained multi-times by the error back-propagation method at each sample period to accommodate the possible variations in the parameters or load torque. As a result, the proposed control system has a robust and precise system against load torque and parameter variation. Stability and usefulness are verified by computer simulation and experiment.

Statistics

Show / Hide Statistics

Cumulative Counts from September 30th, 2019
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.

Cite this article

[IEEE Style]

J. Ko, Y. Seo, H. Kim, "Precision Position Control of PMSM using Neural Observer and Parameter Compensator," Journal of Power Electronics, vol. 8, no. 4, pp. 354-362, 2008. DOI: 10.6113/JPE.2008.8.4.354.

[ACM Style]

Jong-Sun Ko, Young-Ger Seo, and Hyun-Sik Kim. 2008. Precision Position Control of PMSM using Neural Observer and Parameter Compensator. Journal of Power Electronics, 8, 4, (2008), 354-362. DOI: 10.6113/JPE.2008.8.4.354.