thiết kế bộ điều khiển vận tốc và vị trí 3 động cơ AC

Topics 4 Design the velocity and position control of AC 3 phase motor Groups: 01...  Almost 80% of the mechanical power used by industries is provided by three phase induction motors be

LECTURE: MICROCONTROLLER

VIETNAM NATIONAL UNIVERSITY

HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY

FACULTY OF MECHANICAL

Topics 4 Design the velocity and position control of AC 3

phase motor

Groups: 01

I INTRODUCTION

II CONTROL METHOD

III DELTA AC DRIVER And MOTOR

IV DELTA ASDA EDITION SOFTWARE

V SUMMARY AND REFERENCES

1 AC 3 PHASE MOTOR

I INTRODUCTION

 The three-phase induction motors are the most widely used

electric motors in industry

 Almost 80% of the mechanical power used by industries is

provided by three phase induction motors because of its simple and rugged construction, low cost, good operating

characteristics, absence of commutator and good speed regulation

II CONTROL METHOD

1 CONTROL MOTOR

what can we do to control the speed of

an AC induction motor?

 Change the number of poles (in discrete

increments - inefficient & rarely done)

 Change the frequency of the AC signal

 Change the slip

1 CONTROL VELOCITY

1 CONTROL VELOCITY

EXAMPLE:

1 INTRODUCTION OF DRIVER

III Delta AC Drives and Motor

 Pulse commands and

analog voltage signal

A wide power range: from 100W to 1.5kW, 1-phase or 3-phase; from 2kW to 3kW, 3-phase

Input power supply: AC 200V ~ 230V

Built-in Position / Speed / Torque control modes 8 internal

programmable registers (point-to-point position control)

Internal control function: Indexing, Feed step control function (for cutting applications)

Internal control function: Position teaching function (JOG

mode)

Modbus communication protocol is supported as standard

Communication Interface: RS-232 / RS-485 / RS-422

2 SPECIFICATIONS

3 MOTOR

4 SERVO DRIVER SPECIFICATIONS

4 MOTOR SPECIFICATIONS

5 Connections and Wiring

5.1 Connecting to Peripheral Devices

5.1 Connecting to Peripheral Devices

5.2 Servo Drive Connectors and Terminals

5.2 Servo Drive Connectors and Terminals

The layout of CN3 Drive Connector

Communication Hardware Interface

Communication Hardware Interface

6 Position and Speed Control Mode

Speed Control Mode

There are three turning modes for gain adjustment: Manual, Auto and Easy modes.

Manual Mode: User-defined loop gain adjustment When using this mode, all auto and auxiliary function will be disabled

Auto Mode: Continuous adjustment of loop gains according to measured inertia, with ten levels of system bandwidth The

parameter set by user is default value

Easy Mode: Robust for wide range of external load inertia

change, with ten levels of system stiffness Using easy mode can immediately suppress the interference of external load and mechanical resonance and also stand for the load inertia

change

Position Control Mode

The position control mode (Pt or Pr mode) is usually used for the applications requiring precision positioning, such as

industry positioning machine…

Delta ASDA-A and ASDA-A+ series servo drives support two kinds of command sources in position control mode:

 Internal parameter

 External pulse: With direction which can control the rotation angle of servo motor The max input frequency for the external pulse command is 500Kpps and it is equal to rotation speed of 3000r/min

Position Control Mode

Position Control Mode

7.1 Three-Phase Power Supply Connection

7 Wiring Diagrams of I/O Signals

7.2 Position (Pt) Control Mode

7.2 Position (Pt) Control Mode

7.3 Speed Control Mode

8 ASDA - SOFTWARE

8.1 SCOPE

8.2 AUTO GAIN TUNING

8.3 MOTION CONTROL

V References

1 DELTA ASDA – User - Manual

2 ASDA-A-Catalog

3 dsPIC30F4011/4012 Data Sheet

4 System-Dynamics-2Ed - William J Palm III

5 Kỹ thuật điều khiển tự động – Nguyễn Thị Phương Hà

6 Bài giảng Vi Điều Khiển – Võ Tường Quân

THANK YOU!