介紹了一種基于結(jié)構(gòu)簡(jiǎn)單測(cè)量精度高的新型轉(zhuǎn)矩傳感器———光柵轉(zhuǎn)矩傳感器的轉(zhuǎn)矩測(cè)量系統(tǒng), 重點(diǎn)介紹了光柵轉(zhuǎn)矩傳感器的基本結(jié)構(gòu)、光柵轉(zhuǎn)矩傳感器的轉(zhuǎn)矩測(cè)量系統(tǒng)的基本組成與工作原理,詳細(xì)論述了光柵轉(zhuǎn)矩傳感器存在的機(jī)械誤差與電氣誤差及產(chǎn)生這些誤差的原因, 提出了克服這些誤差的方法———數(shù)字濾波方法和非線性補(bǔ)償方法。通過(guò)給出的樣機(jī)系統(tǒng)的實(shí)驗(yàn)結(jié)果,證明該光柵轉(zhuǎn)矩測(cè)量系統(tǒng)的測(cè)量精度與電磁式轉(zhuǎn)矩傳感器相當(dāng),是一種較理想的靜態(tài)、動(dòng)態(tài)平均轉(zhuǎn)矩的測(cè)量工具,有實(shí)用價(jià)值,可望得到推廣應(yīng)用。
關(guān)鍵詞:光柵轉(zhuǎn)矩傳感器; 測(cè)量系統(tǒng); 測(cè)量精度
Abstract : This paper introduces a new kind of torque sensor based on simple structure and high measuring accuracy ———the measuring system of grating torque sensors. It mainly presents the construction of grating torque sensors and the basic composing and working principles for the torque measuring system of grating torque sensors. It also discusses the mechanical errors that a grating torque sensor does and presents the electrical errors as well as the causes for both. It presents two methods for eliminating these errors : the digi2
tal filter method and the non2linearity compensating method. The experimentation results of the model system show the measuring accuracy of the grating torque system is as good as that of an electromagnetic torque sen2 sor. It proves that the new system is an ideal , static and dynamic measuring tool for average torque. It has practical value and has the potential to be spread and used.
Key words : grating torque sensor ; measuring system; measuring accuracy