一(yi)(yi)個(ge)糾偏裝置系統(tong)基本上(shang)是一(yi)(yi)個(ge)位(wei)(wei)移傳(chuan)感(gan)器檢(jian)測帶材(cai)(cai)(cai)位(wei)(wei)置，并與給定(ding)量比(bi)較，如　有(you)偏移，則令執行機構去糾正偏移直(zhi)至在給定(ding)量要求之(zhi)內。由(you)于中(zhong)心位(wei)(wei)置的偏移難以測量，因(yin)此(ci)通常取　材(cai)(cai)(cai)料的邊緣位(wei)(wei)置作(zuo)為(wei)控制信號的基準(zhun)。　所用(yong)(yong)試驗(yan)帶材(cai)(cai)(cai)為(wei)打(da)印用(yong)(yong)卷(juan)筒紙，寬220mm，承受張(zhang)(zhang)力較小，不允許(xu)出現(xian)折皺(zhou)和(he)卷(juan)邊現(xian)象。帶材(cai)(cai)(cai)由(you)放卷(juan)輥1經(jing)過中(zhong)間(jian)導向(xiang)輥3到(dao)收卷(juan)輥6，收卷(juan)輥由(you)直(zhi)流電(dian)(dian)機7帶動，可無(wu)級(ji)調(diao)速。磁粉離(li)合器2用(yong)(yong)作(zuo)加載，使帶材(cai)(cai)(cai)具有(you)一(yi)(yi)定(ding)的張(zhang)(zhang)力，張(zhang)(zhang)力大小由(you)施加給磁粉離(li)合器的勵磁電(dian)(dian)流無(wu)級(ji)調(diao)節。帶材(cai)(cai)(cai)在傳(chuan)輸中(zhong)的橫向(xiang)偏移由(you)光電(dian)(dian)傳(chuan)感(gan)器4檢(jian)　測，產生一(yi)(yi)個(ge)與偏移量成比(bi)例的電(dian)(dian)信。