How To Control DC Servo Motors?

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3/15/23, 259 PM
How to Control DC Servo Motors?
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• How to Control DC Servo Motors?(https//oxeltech.d
  e/en/dc-servo-motor-controller/)
• HTaoSbhwlaereofTCoontCenot ntrol DC Servo
  Motors?
• Types of Controls for DC Servo Motors
• PWM-based DC Servo Motor Control
• Introduction
• Hardware Architecture
• Software Design
• Example
• DSP controller-based DC Servo Motor Control
• Introduction
• Hardware Architecture
• Software Design
• Example
• Comparison of PWM-based DC Servo Motor with DSP
  Controller-Based DC Servo Motor
• References
• Types Of Controls For DC Servo Motors
• A DC servo motor is a type of DC motor that
  provides fast precision position control for
  closed-

2
3/15/23, 259 PM Hardware Architecture
How to Control DC Servo Motors?

• This type of DC servo motor is an assembly of
  four major components, namely
• Oxeltech
• a DC motor,
• a position sensing device,

3. a gear assembly,
Share
4. and a control circuit.
The following Block diagram shows the structure
of the PWM-based DC servo motor
Structure of the PWM-based DC Servo
Motor Software Design A motor control algorithm
is developed that will be programmed to the
microcontroller to generate control signals for
the position and speed control of the DC servo
motor. For commonly used motors, libraries are
often available already. Example SG90 is a
PWM-based DC servo motor that is connected with
Arduino. The Arduino drives the motor using
control pulses.
3
How to Control DC Servo Motors? SG90 A
PWM-based DC Servo Motor Interfaced with Arduino
UNO
3/15/23, 259 PM
DSP Controller-Based DC SeOrxveoltMeocthor
Control IntSrhoadreuction
DSP Controller-Based DC Servo Motor Control A
DSP controller-based DC servo motor has precise
control of parameters like position, speed, and
torque with high reliability. This type of motor
is driven by the host controller which could be
a PC running a motor control script or some other
programmed controller. The function of the host
controller (e.g. PC) is sending instructions, for
example via UART, to the DSP controller in order
to drive the motor. The core part of the DSP
controller is the minimum system based on a DSP
chip which is specially developed for the
application of the motor. Many off-the-shelf DSP
controller-based DC servo motors are available
such as the DYNAMIXEL XM series motors. Hardware
Architecture The entire motor control system
includes the host computer, motor driving part,
parameter storage, and signal sampling and
processing part. The following block diagram
shows the structure of the DSP controller-based
DC servo motor
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3/15/23, 259 PM
How to Control DC Servo Motors?
Oxeltech
Share Block Diagram of DSP controller-based DC
Servo Motor Control Software Design The software
development kit for your PC (or host controller)
is usually available for this type of motor that
provides control functions using packet
communication. Such software development kits
support various programming languages e.g. C,
C, python, Java, MATLAB, and
LabVIEW. Example DYNAMIXEL XM540-W270-T/R is a
DSP controller-based DC servo motor that supports
command signals in the form of digital packets.
DYNAMIXEL XM540-W270-T.R A DSP Controller-based
DC Servo Motor
Comparison Of PWM-Based DC Servo Motor With DSP
Controller-Based DC Servo Motor
Features PWM-based servo motor DSP controller-based servo motor
Precision No feedback to a controller device, therefore less precise Highly precise control of position, speed, and torque
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How to Control DC Servo Motors?
Applications Used in robots like Biped Robot, Hexapod, robotic arm, etc. Used for a steering system in RC toys Robots where position control is required without feedback Less weight O hence used in DOF robots like humanoid robots Antenna Positioning Woodworking / CNC machines Metal cutting and Metal forming xmaechlintese cRhobotic vehicle
Power CoSnhsuamreption Drive small loads hence, consume low power Drive large loads, therefore consume more power
Example SG90 Input voltage 4.8-6VDC Current 100-250mA Command signal PWM Degree rotation 180(15) DYNAMIXEL XM540-W270- T/R Input voltage 12V Current 4.4A Command signal Digital packet Degree rotation lt360(0.088)
Cost Typically low Typically high

• If you have any questions regarding Control of DC
  Servo motors or their performance or any other
  hardware design challenge in general, feel free
  to Contact Us (https//www.oxeltech.de/contact-us
  ) for our consultancy.
• References
• Robotis, DYNAMIXEL (a smart actuator system)
• Haiyan Hu , Hong Gu, Chunguang Li, Xiaowei Cai
  and Juan Li, The Design of DSP controller-based
  DC Servo Motor Control System
• Electronics Hub, Servo Motor Types and Working
  Principle
• Electrical 4 U, Theory of DC Servo Motor
• Circuit Digest, Servo Motor Working Mechanism
• Team Oxeltech
• April 21, 2022(https//oxeltech.de/en/2022/04/21/)
  
• 1053 am
• No (https//oxeltech.de/en/dc-servo-motor-
  Comments controller/respond)

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