Choosing a Motor (please help) - Electronic Circuits Projects Diagrams Free

chui · 13th March 2007, 11:57 AM

hey all,

I need to start working with electronic motors and don't know where to start.
At this moment I need two motors for driving up to 10 kg, at a speed of about 0.5 [m/s] - 1.0 [m/s].
The acceleration should be fine, not crazy, but also not too low so I would say between about 2 to 3 second for getting to the max speed?

anyway, I need to understand how to choose one for other details too, so I'll appreciate if someone will explain the general idea here.

thanks alot!

ericgibbs · 13th March 2007, 12:13 PM

hi chui,

Are you talking DC or AC motors, mains or battery powered ??

Eric

chui · 13th March 2007, 12:35 PM

Battery, maybe from a car.
(=DC)

stevez · 13th March 2007, 12:58 PM

It may help you to do some reading on the characteristics of the common motors used in your applications. My guess is that sites that cater to robotics enthusiasts will likely have many references.

dknguyen · 13th March 2007, 01:24 PM

http://www.electro-tech-online.com/e...ng-robots.html

Don't forget about gearing.

huttojb · 13th March 2007, 05:36 PM

Hello.

your best bet is to use a 3 phase motor. If you use a DC or stepper motor you might find it very "steppy". There are many cct out there that you can use to drive the motor, or use a PIC if you wish.

Jason

chui · 13th March 2007, 07:47 PM

ok,

I did some calculations using my knowledge in Physics,
my results are that for:

speed = 1 [m/s]
radius of wheel = 0.17 [m]
mass of robot = 10 [kg]
number of wheels = 2
acceleration = 0.4 [m/s^2]
road's coefficient of friction = 0.3

I will need a motor with:
RPM = 56.17
Torque = 3.145

I really don't think there are correct, but that's the type of results that i need. so.. any ideas?

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13th March 2007, 11:57 AM	(permalink)
chui	Choosing a Motor (please help) hey all, I need to start working with electronic motors and don't know where to start. At this moment I need two motors for driving up to 10 kg, at a speed of about 0.5 [m/s] - 1.0 [m/s]. The acceleration should be fine, not crazy, but also not too low so I would say between about 2 to 3 second for getting to the max speed? anyway, I need to understand how to choose one for other details too, so I'll appreciate if someone will explain the general idea here. thanks alot!

13th March 2007, 12:13 PM	(permalink)
ericgibbs	hi chui, Are you talking DC or AC motors, mains or battery powered ?? Eric

13th March 2007, 12:35 PM	(permalink)
chui	Battery, maybe from a car. (=DC)

13th March 2007, 12:58 PM	(permalink)
stevez	It may help you to do some reading on the characteristics of the common motors used in your applications. My guess is that sites that cater to robotics enthusiasts will likely have many references. __________________ stevez

13th March 2007, 01:24 PM	(permalink)
dknguyen	http://www.electro-tech-online.com/e...ng-robots.html Don't forget about gearing.

13th March 2007, 05:36 PM	(permalink)
huttojb	Hello. your best bet is to use a 3 phase motor. If you use a DC or stepper motor you might find it very "steppy". There are many cct out there that you can use to drive the motor, or use a PIC if you wish. Jason

13th March 2007, 07:47 PM	(permalink)
chui	ok ok, I did some calculations using my knowledge in Physics, my results are that for: speed = 1 [m/s] radius of wheel = 0.17 [m] mass of robot = 10 [kg] number of wheels = 2 acceleration = 0.4 [m/s^2] road's coefficient of friction = 0.3 I will need a motor with: RPM = 56.17 Torque = 3.145 I really don't think there are correct, but that's the type of results that i need. so.. any ideas?