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Elevator car the hoistway precision position detection with variable frequency drive system

Author: KongQingPeng
Tutor: ChaiGuoZhong；ZhaoGuoJun
School: Zhejiang University of Technology
Course: Chemical Process Equipment
Keywords: VVVF Encoder Direct flat layer Feedback PID control
CLC: TM921.5
Type: Master's thesis
Year: 2001
Downloads: 391
Quote: 8
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Abstract


Elevator drive system, VVVF elevator drive system in terms of the structure or performance are significantly more than other forms of transmission system. VVVF elevator is today the world leading level elevator, VVVF elevator electrical control technology research and development is the focus of the development of the Elevator Industry. The ability to detect in real time the position of the elevator car is the key for precise control of the elevator. In this paper, the above two points, the elevator car Well Road precise position detection, and variable frequency drive system, \, and so experiments, the effect of comfortable, efficient elevator running. Various chapters of this thesis, summarized as follows: the first chapter on the significance of this thesis, then reviewed the literature related to the thesis topic, made after the purpose and content of this thesis, illustrates this main innovations of the paper. The second chapter describes the principle of frequency conversion technology, as well as the composition of the inverter, VS-616G5 inverter features Yaskawa adopted after the subject of a detailed description. Chapter III first introduced the structure and the advantages and disadvantages of several common hoistway signal device, then the principle of detecting the precise location of research for this topic, ideas and methods described in detail. Chapter IV gives the ideal velocity curve equation using this topic, and the speed of the elevator command control and direct leveling control study using two different speeds, respectively, in the design of the interface board control peace layer manner on the elevator Control. A multi-speed speed command control to achieve the principle of direct time flat layer, another command control via the serial communication speed the elevator continuously adjustable in accordance with the ideal curve given run, from the principle of direct flat layer. Chapter established a mathematical model of the elevator, conducted a study on the subject adopts double closed-loop PID control. Chapter VI describes the software and hardware design methods of the interface board, and gives the block diagram of the circuit diagram and function modules. The control parameter is determined by experiments, and gives the experimental curve. Chapter VII Summary and Outlook for the content of this thesis.

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CLC: > Industrial Technology > Electrotechnical > Electrification,electrical energy application > Electric drive ( electric drive ) > Control system
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