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DC Motor Precise Speed Control System by Applying PLL-IC

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 29 Issue 2 Page 243-252
published_at 1979
KJ00000156251.pdf
[fulltext] 791 KB
Title
PLL-IC による直流電動機精密速度制御
DC Motor Precise Speed Control System by Applying PLL-IC
Creators Narasaki Hisanori
Source Identifiers
In recent years, Phase-locked-loop electric circuits manufactured by integrated circuits techniques have promoted development of the precise motor speed control. The most popular example nowadays used is the speed control of Direct Drive Motor in a Stereo-turntable. The authors aim to apply the PLL motor speed control to industrial motor drive. In this paper, we regarded this system as a Sampled-data feedback control system and analyzed its stability by using a Z-transform method. By experiment, the following results were confirmed. 1) When the sampling frequency becomes low, the stability limit gain is decreased. 2) At the low sampling frequency, the stability limit gain is inversely propotional as the mechanical time constant and damping factor over 0.5 is necessary. 3) The steady state error of motor speed is zero. 4) Speed change under driving is very difficult.
Subjects
電気電子工学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1979
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部