介紹了一種基于結構簡單測量精度高的新型轉矩傳感器———光柵轉矩傳感器的轉矩測量系統, 重點介紹了光柵轉矩傳感器的基本結構、光柵轉矩傳感器的轉矩測量系統的基本組成與工作原理,詳細論述了光柵轉矩傳感器存在的機械誤差與電氣誤差及產生這些誤差的原因, 提出了克服這些誤差的方法———數字濾波方法和非線性補償方法。通過給出的樣機系統的實驗結果,證明該光柵轉矩測量系統的測量精度與電磁式轉矩傳感器相當,是一種較理想的靜態、動態平均轉矩的測量工具,有實用價值,可望得到推廣應用。
關鍵詞:光柵轉矩傳感器; 測量系統; 測量精度
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