Hello everyone,
I am building a steering wheel for simulator and i wanted to create first a force on the steering wheel using tension springs, then i checked on youtube and found some videos using motors to make force feedback so I decided to try this option. I bought this 12 DC motor. I am requesting some help and guidance for this.
First, what i will be doing is using an optical encoder to check if the angle of the steering wheel changed from its center position to left or right and make the motor turn to the opposite direction. As for the battery it will probably be from 2200 mAh to 5 Ah (i will decide that based on your guidance).
The setup will contain more than just a motor, it will contain a Nextion screen, 19 3mm LEDs, 4 rotary switches, 6 push buttons, 3 potentiometers of 5k or 10k, NRF24L01 Long range with antenna and maybe adding more things to the setup later.
So what I want to know is:
1 - if this is possible to make using this motor ?
2 - How much current might this motor draw when it is under load?
3 - What battery Amp would be right for this ?
4 - Will this motor damage the battery pack ?
5 - I assume a Cooling Fan would be necessary on the battery and surrounding ?
Paul_KD7HB:
Please explain how you are connecting a 13,000 RPM motor to the steering wheel.
Paul
I have 2 options, a gear on the motor engaged to a gear on the steering wheel shaft, but a better option would be a pulley on both steering wheel and motor and a belt
firashelou:
I have 2 options, a gear on the motor engaged to a gear on the steering wheel shaft, but a better option would be a pulley on both steering wheel and motor and a belt
But then how many RPM will your steering wheel turn?
Consider your force feedback is like power steering on an automobile, except in reverse. So, you need a servo motor that will be able to handle the heat from the service you are going to have it make trying to counteract the steering wheel force.
You clearly want a motor/drive system with low resistance to the steering wheel turning. High gear reduction ratios cannot provide this as they are hard or impossible to back-drive.
Thus you need a low reduction ratio and a high torque motor. The motor you have is completely wrong for the application with its very high speed, so you need a very high ratio reduction gear system which would not back-drive.
The starting point you need to work from is establishing how much torque at how much speed the steering wheel needs to give appropriate force feedback.
MarkT:
You clearly want a motor/drive system with low resistance to the steering wheel turning. High gear reduction ratios cannot provide this as they are hard or impossible to back-drive.
Thus you need a low reduction ratio and a high torque motor. The motor you have is completely wrong for the application with its very high speed, so you need a very high ratio reduction gear system which would not back-drive.
The starting point you need to work from is establishing how much torque at how much speed the steering wheel needs to give appropriate force feedback.
From these basic values everything else follows.
thanks Mark for your reply, so what i can tell first is that I have the wrong motor.
So I must search for a low speed high torque motor ? but for high torque, wouldn't that be hard to counter force it ? I mean I would feel it is very hard to turn the steering wheel in any direction ?
Paul_KD7HB:
Consider your force feedback is like power steering on an automobile, except in reverse. So, you need a servo motor that will be able to handle the heat from the service you are going to have it make trying to counteract the steering wheel force.
firashelou:
thanks Mark for your reply, so what i can tell first is that I have the wrong motor.
So I must search for a low speed high torque motor ? but for high torque, wouldn't that be hard to counter force it ? I mean I would feel it is very hard to turn the steering wheel in any direction ?
First work out or measure the actual torque and speed values, nothing else can be decided without this.
MarkT:
First work out or measure the actual torque and speed values, nothing else can be decided without this.
can you please be specific, which torque you mean ? is it the one that i will be inputting ? the steering torque ? that would be defined as a 50N.m let's say that value is from my university final project. In fact the torque used for simulation on the steering wheel was 100N.m which is very high but that was to test when the steering wheel would break.
