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Elektroniikkafoorumi • katso viestiketjua - DC-moottorilla hammastetun tangon ohjaus
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DC-moottorilla hammastetun tangon ohjaus

ViestiLähetetty: Pe Syys 16, 2011 17:40
Kirjoittaja taavi
Terve,

Aloittelevana harrastelijana kysyisin kokeneemmilta semmoista, että kuinka helposti/vaikeasti onnistuisi DC-moottorilla hammastetun tangon ohjaaminen? Tällä hammastanko ohjauksella olisi tarkoitus muuttaa portaattomasti erään putken (ei pakoputki) pituutta. Putken mitta lyhenisi lineaarisesti kierrosten noustessa, elikkäs säätöparametri olisi kierrosluku, joko kanttiaaltona ja sinimuotoisena, molemmat mahdollisia.

Vähän samaan tyyliin toimii kierroslukumittari, eli moottori liikkuu kierrosluvun suhteessa. Ainut ongelma tässä on, että moottori ei pyörähdä edes kokonaista kierrosta välillä 0-8000 rpm. Jos pituutta halutaisiin muuttaa esim. 0,5 m, pitäisi moottorin päässä olla aika julmetun kokoinen hammasratas. Netistä löytyy ohjeet kierroslukumittarin tekemiseen, jos joku saisi siitä ideoita:

http://koti.mbnet.fi/matjarv/elektron/d ... esklm2.htm

Jos vähän vielä sekottaisi pakkaa, voisi pituudesta tehdä takaisin kytkennän esimerkiksi lineaari potikalla. Olisiko kenelläkään mitään ideoita?

Kiitos ja anteeksi

T.Taavi

ViestiLähetetty: Pe Syys 16, 2011 18:29
Kirjoittaja Ampuja
mulla oli joskus mopossa liikkuvalla sisäkartiolla oleva paisari, tuplavaijeri hoiti sen muttei kierrosten mukka.

ViestiLähetetty: Pe Syys 16, 2011 18:34
Kirjoittaja taavi

ViestiLähetetty: Ma Syys 19, 2011 3:20
Kirjoittaja Lahha
Jos liikuteltava matka ei ole kovin pitkä niin kannattaa katsella joku valmis servo. Pidemmällä matkalla sitten melkein tarvii olla sijaintianturi erikseen. Sen kaverina moottorin pyörittely on suht simppeli temppu.

Kierrosmittarin ja servon/moottorin väliin sitten kontrolleri ohjaamaan servoa/moottoria. picAXE:lla tai vastaavalla ratkasulla ei mitenkään mahdoton tehtävä.

ViestiLähetetty: To Syys 29, 2011 7:57
Kirjoittaja Raimo

ViestiLähetetty: Ke Loka 05, 2011 16:00
Kirjoittaja taavi

ViestiLähetetty: Ma Loka 17, 2011 9:18
Kirjoittaja Raimo