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Stepper Motor System Basics (Rev. 2/2010)
Table of Contents
1.
STEPPER MOTOR SYSTEMS OVERVIEW 2
2.
STEPPING MOTORS 3
TYPES OF STEPPER MOTORS 3
VARIABLE ...
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Example Step Motors: AM Series
2. STEPPING MOTORS
TYPES OF STEPPER MOTORS
There are basically three types of stepping motors; variable reluctance, ... to the motor at all
times.
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1. STEPPERMOTOR SYSTEMS OVERVIEW
Motion Control, ...
...
3.1. The basic control format
In essence, we are endeavoring to design a controller that can vary the torque induced in
the rotor of the motor. To do this, the induction motor controller will ... for an induction
motor
An induction motor is an asynchronous AC (alternating current) motor. The least
expensive and most widely used induction motor is the squirrel cage motor. The major ... loop that can detect the outputs of an induction motor, we
can use this motor controller to control an induction machine.
ã TMS320F243 DSP controller. This is manufactured by the Texas Instruments...
... stable, reliable and cost-effective
control system.
Further details on motorcontrol circuits and sensors
are provided in several books, including Motor Control
Electronics” (10). In addition, ... Parekh, Rakesh, “AN889 - VF Control of 3-
Phase Induction Motors using PIC16F7X7
Microcontrollers”, Microchip Technology Inc.,
2003.
10. Valentine, Richard, editor, MotorControl Elec-
tronics Handbook”, ... signal-conditioning circuitry into a single
package.
In most motorcontrol systems, several sensors are
used to provide feedback information on the motor.
These sensors are used in the control loop...
... throughout.
5/11
L297
APPLICATION INFORMATION
TWO PHASE BIPOLAR STEPPERMOTORCONTROL CIRCUIT
This circuit drives bipolar stepper motors with winding currents up to 2A. The diodes are fast 2A types.
Figure ... INPUT
DESCRIPTION
The L297 StepperMotor Controller IC generates
four phase drive signals for two phase bipolar and
four phase unipolar step motors in microcomputer-
controlled applications. The motor can be ... the
L298N or L293E, or with discrete transistors and
darlingtons.
TWO PHASE BIPOLAR STEPPERMOTORCONTROL CIRCUIT
DIP20 SO20
ORDERING NUMBERS
: L297/1 (DIP20)
L297D (SO20)
1/11
N
°
NAME...
... Notes: Sensorless brushless motorcontrol *
; *
; Closed loop 3 phase brushless DC motor control. *
; Two potentiometers control operation. One potentiometer (A0) *
; controls PWM (voltage) and ... with our motor, lets
consider what happens when a voltage is applied to a
DC motor. A greatly simplified electrical model of a DC
motor is shown in Figure 5.
FIGURE 5: DC MOTOR EQUIVALENT
CIRCUIT
When ... consists of one motor terminal driven
high, one motor terminal driven low, and one motor ter-
minal left floating. A simplified drive circuit is shown in
Figure 3. Individual drive controls for...
... 47
Combination MotorControl Units
Motorcontrol centers principally contain combination motor
control units. A combination motorcontrol unit takes all the
elements required to control an AC motor ... Contents
Introduction 2
Motor Control 4
Power Supplies 8
Design Standards 12
Need for Circuit Protection 13
Motor Control Centers 21
tiastar MCC Construction 32
tiastar Arc Resistant MCC 43
Combination MotorControl ... A motorcontrol center is made up of a steel structure that
contains the combination motorcontrol units, wireways,
internal wiring, and bus bars. As the NEMA definition states,
a motor control...
...
a step response for
our PID controller?
Control systems
What is a control system?
What are some examples?
What are the types of control systems?
How are control systems represented?
... yield the best curve
will be used for the PID controller.
PID Closed loop control system
PID controls the gain portion of the
closed loop control system.
PID algorithms adjust the gain ... loop
control systems.
Examples include:
Stereo volume control
Electric drill speed control
Reasons for accurate speed control
Motor speed should
be independent of
load.
Differential...
... 6
Brush DC motor 8
Single-phase induction motor 10
Three-phase induction motor 12
Three-phase brushless DC motor 14
Stepper motor 16
Switched reluctance motor 18
Auxiliary blocks 20
A
B
C
Motor
current
High-frequency ... controller
or
Microcontroller
Power supply
Mosfet
Mosfet
Mosfet
driver
Mosfet
Mosfet
Mosfet
driver
M
➤
Smart Power IC
Tw o-phase bipolar steppermotor drive
Stepper motor
Driver for bipolar stepper ... resistor
Commands
Analog controller
or
Microcontroller
Power supply
Mosfet
Mosfet
driver
Reference
M
Diode
Smart Power IC
Multi-phase unipolar steppermotor drive
The steppermotor has windings only...