2 A porca do meu fuso se movimenta a 20 mm por revolução (isto porque estou usando redução de 2 p 1, na verdade meu fuso é de passo 10mm).
O que vc tá falando soa estranho ... confira o passo nativo do fuso ...
Se o passo do seu fuso é de fato 10 mm, redutor 2:1 , micropasso 5:1, então a resolução será:
10 / 200 / 5 / 2 = 0,005 mm por passo
ou
200 passos por milímetro
isso é um pouco confuso, ist6o se refere a configuração de aceleração e velocidade ou a resolução?
Motor Tuning:
Finally we’ll get to actually spin some motors. The first thing in the tuning process is to
calculate how many steps per unit of travel we have. This depends on a few things:
In case of a step motor:
• The amount of steps per revolution, most commonly 200.
• The step resolution of the motor drive, full step, half step, 5, 10, 100 micro steps etc.
In case of a servo motor.
• The amount of quadrature counts produced by the encoder on the motor
• The ‘encoder mode’ of the motor drive. 1, 2 or 4 encoder counts.
In both the above cases:
• The reduction ratio between the motor shaft and lead screw.
• And finally, the thread pitch of the screw. (How far the table moves with each rotation
of the screw).
It should be noted that other actuating systems could be used like belts, rack & pinions etc but
here we will use a lead or ball screw as the basis for our calculation. We will do one metric
and one imperial example.
The metric one:
Let’s assume we have a standard step motor with 200 steps per rev. This motor is driven by a
driver set to 5 micro steps per full step. A Gecko G210 from Geckodrive for example. The
motor is directly coupled to the lead screw which has a pitch of 5mm per revolution. That
means the axis will move 5mm for each revolution of the screw.
So we’ll take the motors 200 steps multiply that by the drives 5 micro step. (200 X 5 = 1000)
The drive needs 1000 pulses (or steps) to turn the screw one revolution thus making the axis
move 5mm. So now we take those 1000 steps and divide by the pitch of the screw, which is 5.
(1000 / 5 = 200). In other words we need 200 steps to move one unit or mm.
