目 录
摘 要........................................................................................................................................................................IV
ABSTRACT.............................................................................................................................................................V
IN THE WAKE OF UTILIZATION IN COMPUTER TECHNOLOGY AND THE DEVELOPMENT AND IMPROVEMENT OF SOLID POWER
DEVICE, ELEVATOR CONTROLLING TECHNOLOGY HAS BECOME MODERN TECHNOLOGY SINCE THE FIRST HALF OF THE
20THCENTURY, WHICH IS CONSTANT CURRENT SPEED REGULATION TO ALTERNATING CURRENT VARYING FREQUENCY SPEED
REGULATION. AS INTRODUCING INTERNATIONAL STANDARD AND ADVANCED PRODUCTS AND TECHNOLOGIES FROM DEVELOPED
COUNTRIES, FREIGHT ELEVATORS AS A KIND OF ELEVATORS HAVE BEEN DEVELOPED AND IMPROVED IN OUR
COUNTRY...............................................................................................................................................................V
THE ARTICLE INTRODUCES THE ORIGIN AND THE DEVELOPMENT OF THE ELEVATOR AND THE CHARACTERISTICS OF THE FREIGHT
ELEVATOR WITH THE PRESENT SITUATION, AND THE DESIGN OF THE OBJECTIVES, CONTENTS AND SIGNIFICANCE. AT FIRST GIVES
THE DEFINITION, TYPES, COMPOSITION, WHICH HOPES TO HAVE A PRELIMINARY UNDERSTANDING OF THE LIFT. AND THEN
DESCRIBES THE PLC’S STAGE OF DEVELOPMENT, DEFINITION, THE BASIC STRUCTURE AND WORKING PRINCIPLE,
PERFORMANCE AND FEATURES，PLC’S APPLICATION AND SELECTION, DESCRIBING THE BASIC COMPOSITION OF
THE INVERTER, CLASSIFICATION, THE VECTOR CONTROL PRINCIPLE OF THE INVERTER AND VVVF ELEVATOR CONTROL FEATURES.
THE DESIGN OF THE FREIGHT ELEVATOR CONTROL SYSTEM IS THE SYSTEM WITH RANDOM LOGIC CONTROL. IN ADDITION THE
ARTICLE ALSO INTRODUCES THE PRINCIPLE OF PLC AND HARDWARE DESIGN OF THE VVVF FREIGHT ELEVATOR AND THE
VVVF FREIGHT ELEVATOR SOFTWARE PROGRAM DESIGNATION...................................................V
IN THIS DESIGN, THREE-STORE FREIGHT ELEVATORS CAN BE APPLIED BY PLC CONTROLLING AND ACTIVATED WITH VARIABLE
FREQUENCY. ALSO, THE COMPUTER COMMUNICATION SUCCEEDS TO OPERATE ON THE SURVEILLANCE OF THE FREIGHT ELEVATOR
AND COMPLETES THE RUNNING CONTROLLED INDIRECTLY ON THE COMPUTER. THEREFORE, IT IS SUPPOSED THAT IT IS FEASIBLE
TO USE PLC TO CONTROL FREIGHT ELEVATORS AND FOCUS ON MONITORING THEM BETWEEN
BUILDINGS.............................................................................................................................................................V
KEY WORDS: PROGRAMMABLE CONTROLLER, FREIGHT ELEVATOR CONTROLLING, FREQUENCY
TRANSFORMER，PLC , MONITORING FUNCTION...................................................................................V
1前 言.........................................................................................................................................................................1
1.1电梯的起源与发展..........................................................................................................................................1
随着社会的发展，建筑物规模越来越大，楼层越来越多。所以，电梯的调速精度、调速范围等静态和动态
特性提出了更高的要求。尽管交流电动机结构简单，造价便宜，但在调速性能方面却难以满足更高的要求
而对直流电动机来讲，由于后来采用了发电机—电动机组调速系统，能较好地满足电梯调速的更高要求。
因此，在20世纪前半叶，电梯的电力拖动，尤其是高层建筑物中的电梯速度的调节，几乎都是采用直流调
速系统来实现的。....................................................................................................................................................1
1900年美国奥梯斯电梯公司制造出世界上第一台自动扶梯。............................................................................1
1915年已设计成功电梯自动平层控制系统。........................................................................................................1
I
