Help Needed Choosing Motors for AGV Design

In summary: I need to choose a motor with the right torque for the conveyor.I think i should chose a DC gear motor.Thanks for your reply.In summary, the designer is looking for a motor that can provide the correct torque for their conveyor system. They are careful to consider the dimensions and weight of the system before making a decision.
  • #1
Nam Nga
5
0
hi all
I m designing a AGV (automatecd guided vehicle),i use DC motor and step, i have read a catelogue motor,but i don't know how to chose motor pertinently.
More information about the motor
http://www.motionking.com/Products/Hybrid_Stepper_Motors/HB_stepper_motors.htm"
http://www.motionking.com/Products/DC_Motors/DC_gear_motors.htm"
Anyone can help me .
Thanks so much !
 
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  • #2
The specs give you details about voltage and current ratings, even gear reduction ratio.

The design has to take these specs into consideration.
 
  • #3
Thanks for your reply that is useful ,so i read the catalogue carefully and found more on google ,i got the answer
 
  • #4
Hi, you should think about the dimension of this vehicule and the weight , because some motors are used for high torque others for precise step angel, for high or low speed ect...
It depends to your needs , give us please more details about the project , this can be better for us to know about the choise of the motor.
Have a nice day,:cool:
Anita
 
  • #5
Thanks ,Anita
In my design, the AGV have a short roller conveyor on the top something like:
http://img353.imageshack.us/img353/3153/liverollerconv.th.gif
http://img397.imageshack.us/img397/343/conlan13.th.gif
First ,i chose a step motor because it have some advantage,especially it can keep goods by hold torque when AGV move,but when i caculated how many torques i need for the conveyor,
then i looked up the catalogue ,i relized that step motor can not use for this case because its torque is too small,i think i should chose a DC motor and change my mechanical design
More information about AGV ,you can see these videos:
http://www.youtube.com/watch?v=hLwI-pHUvRQ"
http://www.youtube.com/watch?v=Iqeo7p_bnGw"
 
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  • #6
Hi Nam nqa-
Some motors are specifically designed for continuous locked-rotor applications. See
http://www.bodine-electric.com/asp/...of=FORID:11&q=torque+motor&sa.x=14&sa.y=9#979
DC gear motors with commutators generally are not a good choice for locked rotor torque, but some Hall Effect sensor dc motors with permanent magnet rotors are suitable. DC gearmotors are generally easier to control than steppers, but are not as accurate in controlling motor RPM or stopping position.
Bob S
 
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  • #7
Thanks Bob !
It is useful advice,i will try to this way ,but now i have a problem with my mechanical design.
 

1. What factors should be considered when choosing motors for an AGV design?

When choosing motors for an AGV (Automated Guided Vehicle) design, there are several important factors to consider:

  • Power and torque requirements: The motors must be able to provide enough power and torque to move the AGV and any payload it may carry.
  • Size and weight limitations: The motors should be compact and lightweight to fit within the design constraints of the AGV.
  • Battery life: The motors should be efficient enough to minimize battery usage and extend the AGV's operating time.
  • Sensor compatibility: The motors should be compatible with the sensors used for navigation and obstacle avoidance on the AGV.
  • Cost: The motors should be cost-effective and fit within the budget of the AGV project.

2. What types of motors are commonly used in AGV designs?

The most commonly used motors in AGV designs include:

  • DC motors: These motors are simple, affordable, and can be easily controlled for precise movements.
  • Brushless DC motors (BLDC): BLDC motors offer higher efficiency and longer lifespan compared to DC motors, but they are more expensive.
  • Servo motors: These motors are commonly used for steering and offer high precision and control.
  • Stepper motors: Stepper motors are often used for driving wheels and provide precise positioning but may be less efficient than other motor types.

3. How do I determine the power and torque requirements for my AGV motors?

The power and torque requirements for AGV motors will depend on the weight of the AGV and any additional payload, as well as the type of terrain the AGV will be operating on. To determine these requirements, you can perform a simple calculation using the following formula:

Power (Watts) = Force (Newtons) x Speed (m/s)

Once you have calculated the required power, you can choose motors with enough torque to meet this power requirement.

4. Can I use the same motors for both propulsion and steering on an AGV?

It is possible to use the same motors for both propulsion and steering on an AGV, but it may not be the most efficient or effective solution. Using separate motors for propulsion and steering allows for independent control and can provide smoother and more precise movements. However, if space and budget constraints are a concern, using the same motors for both functions may be a viable option.

5. How can I ensure the motors I choose are compatible with the rest of my AGV design?

To ensure compatibility, it is important to consider the voltage and current requirements of the motors and make sure they are compatible with the power supply and motor controllers in your AGV design. Additionally, you should consider the physical dimensions and mounting requirements of the motors to ensure they will fit properly within the AGV. It is also helpful to consult with the manufacturers of the motors and other components in your design to ensure compatibility.

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