forskjell på digital og analog servo

[ran]

hei jeg lurer på som er forskjell på digital og analog servo??
noen som har en fornuftig forklaring på dette??

[longbow]

Ingen som vet?
Har også lurt på dette...

[c00L3y]

Gidder ikke skrive alt selv:P

Digital Servos vs Analog Servos
What is the difference between an analog and digital servo?

Digital servos, at the user end, are controlled no differently than analog servos. The difference is in how the servo motor is controlled via the circuit board (amplifier). The motor of an analog servo receives a signal from the amplifier 30 times a second or at 30Hz. This signal allows the amplifier to update the motor position. Digital servos use a high frequency amplifier that updates the servo motor position 300 times a second or at 300Hz. By updating the motor position more often, the digital servo can deliver full torque from the beginning of movement and increases the holding power of the servo. The quick refresh also allows the digital servo to have a tighter deadband.

With the exception of a higher cost, there are only advantages for digital servos over analog servos.

The digital micro processor is 10 times faster than an analog servo. This results in a much quicker response from the beginning with the servo developing all the rated torque 1 degree off of the center point. Be aware that this faster response also results in higher starting currents, so make sure your batteries can handle it.

Digital servos can be programmed for direction of rotation, center and end points, failsafe option, speed, and dead bandwidth adjustment. This is great for matching sets of servos for deadband width, center and end points in giant scale aircraft applications, and for reversing a digital servo when two are used on a "Y" harness If you do not want to deal with the added complication of programming, no worries! Hitec digital servos will perform like standard servos out of the box. It is not required to program them before use.

The standing torque of a digital servo is 3 times that of its analog counterpart. This means digital servos are typically smaller and have more torque.



Source: http://www.societyofrobots.com/actua...alanalogservos
Google is King