[NSRCA-discussion] Servo Signals

Vicente "Vince" Bortone vicenterc at comcast.net
Tue Jun 23 05:17:39 AKDT 2009



No, that is good information. It is nice to know how works. 



Thanks, 



VB  
----- Original Message ----- 
From: "Jay Marshall" <lightfoot at sc.rr.com> 
To: "General pattern discussion" <nsrca-discussion at lists.nsrca.org> 
Sent: Tuesday, June 23, 2009 7:18:16 AM GMT -06:00 US/Canada Central 
Subject: Re: [NSRCA-discussion] Servo Signals 




Because they use a digital processor, rather than an analog processor, in the electronics. This allows easy tailoring of the control system parameters even to the extent of different performing servos to have the same hardware inside. 



Is this too much information? 




Jay Marshall 

-----Original Message----- 
From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Vicente "Vince" Bortone 
Sent: Tuesday, June 23, 2009 8:03 AM 
To: General pattern discussion 
Subject: Re: [NSRCA-discussion] Servo Signals 




Jim, 



I don't know anything about electronics.  I am sure that the following question if very simple for you:  Why the digital servos are called digital? 



Thanks, 



Vicente "Vince" Bortone 




----- Original Message ----- 
From: "James Oddino" <joddino at socal.rr.com> 
To: "General pattern discussion" <nsrca-discussion at lists.nsrca.org> 
Sent: Tuesday, June 23, 2009 12:12:23 AM GMT -06:00 US/Canada Central 
Subject: Re: [NSRCA-discussion] Servo Signals 

What do they say in the Capital 1 commercials, not literally?  Transmitters communicate with receivers digitally in PCM mode and analog in PPM mode.  Receivers communicate with servos analogy (?) with PWM.  The servos are analog. 





Jim O 









On Jun 20, 2009, at 7:23 PM, Bob Richards wrote: 






--- On   Sat, 6/20/09, Richard Lewis   < humptybump at sbcglobal.net >   wrote: 





And....Interestingly enough.....It does not matter what kind of fancy whopping digital super latest and greatest TX/RX system you have, the signals to the servos are still firmly rooted in good old 1970's technology....:)  And...Your super whopper digital brushless whatever servo still has an analog pot for position feedback....:) 





I for one am eager to see a leap in servo technology.....Bidirectional serial comms to the servos with the servo being able to feed back torque, amps, position, rate, etc.....and encoder/resolver position feedback in the servos to really catch up with the world we live in...... 





Amen to that. We have digital servos and digital receivers, yet they talk to each other via an analog method and use analog feedback. 








And....Interestingly enough.....It does not matter what kind of fancy whopping digital super latest and greatest TX/RX system you have, the signals to the servos are still firmly rooted in good old 1970's technology....:)  And...Your super whopper digital brushless whatever servo still has an analog pot for position feedback....:) 





I for one am eager to see a leap in servo technology.....Bidirectional serial comms to the servos with the servo being able to feed back torque, amps, position, rate, etc.....and encoder/resolver position feedback in the servos to really catch up with the world we live in...... 





Amen to that. We have digital servos and digital receivers, yet they talk to each other via an analog method and use analog feedback. 




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