the system properties of single-loop system, such as velocity, torque, bifurcated power, transmission efficiency are researched deeply using theoretical analysis and numerical computing, and gives new methods for designing which according to the design parameter a and combine with the system diffluent coefficient q and the ratio of x, p cell transmission . so the theoretical expressions for designing this kind of transmission is established . the design parameter a is put forward as the ratio of confluent power and the input power of single-loop system 通過對單環(huán)路系統(tǒng)的運動學(xué)和動力學(xué)特性、功率流特性、傳動效率特性等所進行的理論分析和數(shù)值計算,提出了以單環(huán)路系統(tǒng)主支路功率大小與輸入總功率的比值為關(guān)鍵設(shè)計參數(shù)的設(shè)計新方法,并結(jié)合系統(tǒng)的功率分流系數(shù)q和各組成單元的傳動比,得到了單環(huán)路系統(tǒng)的速度、力矩、功率流、傳動效率等計算公式,為該種傳動類型的設(shè)計提供了必要的理論依據(jù)。