After being improved , the gear surface contact fatigue strength obeys weibull distribution and stress obeys normal distribution , the gear bottom bend fatigue strength and stress obey logarithm normal distribution , according to the relation of average safe rate and reliability , then the gear strength reliability design and check equations can be deduced 將齒面接觸疲勞強度按威布爾分布、應力按正態(tài)分布處理,將齒根彎曲疲勞強度和應力均按對數(shù)正態(tài)分布處理,再根據(jù)平均安全系數(shù)和可靠度之間的關系,推導出了齒輪強度可靠性設計和校核公式。
Another advantage , contrast to using convolutional codes or turbo codes , is its low complexity while maintain high ber performance because the check equations are used to terminate the both iterations . we develop the theoretical error free feedback bound for bpcm - id and predict the threshold for decder convergence using the extrinsic information ransfer chart ( exit ) 利用非正則ldpc具有不同度的信息節(jié)點概率密度演化的差異,對高階星座中具有較高級別的子信道提供額外的保護,可使迭代反饋判決時,星座子集擁有最大的無錯反饋歐氏距離調和均值,從而改善系統(tǒng)的迭代收斂特性。