abstract
Chapter 1 System Overview
1. 1 Overview of Constant Pressure Water Supply System
1.2 overall scheme
1.2. 1 Main features of variable frequency constant pressure water supply system
1.2.2 shortcomings of the traditional constant pressure method
1.3 implementation of constant pressure water supply technology
Composition and working characteristics of 1.4 system
1.4. 1 Frequency conversion constant pressure water supply system and selection of control parameters
1.4.2 working characteristics
1.4.3 main research design
Chapter 2: Feasibility analysis and realization of system design.
2. 1 Overall design analysis
2.2 System design and implementation
Chapter III Hardware Circuit Design
3. 1 main circuit device
3. 1. 1 main circuit structure
3. 1.2 Selection of main electrical appliances
3.2 Pressure sensor and its detection
3.3 PLC programmable controller
3.4 Main Circuit Design
Chapter 4 Frequency Converter System
4. 1, frequency conversion theory
4. 1. 1 inverter control mode
4. 1.2 Frequency conversion energy-saving speed regulation theory
4.2 PID component of frequency converter
4.2. 1 Basic composition of the system
4.3 Overview of PID Control System of Inverter
4.3. 1 system working mode
4.3.2 the principle of PID adjustment
4.3.3 Integral Link (I) Purpose of introducing integral link
4.3.4 Differential link (D) Its function
4.4 inverter PID function preset
4.5 Low frequency analog output analog-to-digital conversion
Chapter V Constant Pressure Water Supply System
5. 1 system PLC control flow chart
5. 1. 1 control schematic diagram
5. 1.2 control flow chart
5. 1.2. 1 Basic control requirements
5. 1.2.2 The two pumps are 1 pump and 2 pump respectively.
5.2 PLC I/O Distribution Diagram PLC Connection Ladder Diagram and Description
5.2. 1 Input/Output Distribution Diagram
PLC wiring
Automatic control ladder diagram
Description list
5.3 Internal structure terminal and parameter setting of frequency converter
5.3. 1 internal structure terminal of frequency converter
Specific parameter setting
Chapter 6 Thank you
... with this opening report.