Principle and Implementation of an MC4044-Based Phase Locked Loop for Constant Speed Control

作     者：孙国富 顾启泰 刘学斌 

作者机构：Department of Precision Instruments and MechanologyTsinghua UniversityBeijing 100084China 

出 版 物：《Tsinghua Science and Technology》 (清华大学学报（自然科学版（英文版）)

年 卷 期：2000年第5卷第4期

页      面：409-413页

学科分类：080703[工学-动力机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 

主　　题：MC4044 phase locked loop DC motor constant speed contro? 

摘      要：An inexpensive MC4044-based phase locked loop for constant speed control of a DC motor is discussed. It operates on a principle similar to that of a frequency synthesizer. The paper introduces the system configuration with a detailed description of its operating principle, some practical design considerations are discussed with an experimental study to test the control performance of the newly designed system. The experimental result shows that the phase locked control system can regulate the speed of a DC torque motor with a precision up to 0.0022%(1).[