金属带式无级变速传动系统仿真与控制研究.pdfVIP

2 0 0 1 年 1 月 农 业 机 械 学 报 第 32 卷 第 1 期 金属带式无级变速传动系统仿真与控制研究 胡建军　秦大同　孙冬野　王红岩 　　【摘要】　运用键合图理论, 建立了金属带式无级变速传动系统的键合图分析模型。为了提高常规控制下速比 变化时传动系的响应及减少发动机转矩响应滞后, 提出了发动机转矩控制的一种新的补偿方式。仿真结果表明: 补 偿算法能够有效降低速比变化时的发动机转矩滞后现象, 可以改善传动系统的动态响应。 叙词: 无级变速传动　仿真　控制 中图分类号: TH 13232　　　　文献标识码: A M odeling and Con trol of a Con tinuously Var iable Tran sm ission System w ith M eta l Push ing Belt 　 　 　 H u J ian jun Q in D atong Sun Dongye W ang Hongyan (Chong qing U n iversity ) Abstract By studying the tran sm ission m echan ism and ratio changing characteristics of a m etal pu sh ing belt type of con tinuou sly variab le tran sm ission (CV T ) system , a bond graph m odel w as , . estab lished and the state space equation of a CV T system w as derived O n the basis of im p roving the ratio change respon siveness and reducing the engine to rque respon se lag in no rm al con tro l, a new con tro l algo rithm w as developed. By analyzing the engine drive to rque characteristics and the pow erun it inertia to rque under the tran sien t condition of the changing ratio , the com pen sation value fo r engine drive to rque w as ob tained w h ich w as p ropo rtional to the differen tial of ratio. T he sim u lation resu lt show ed that u sing th is com pen sation con tro l algo rithm cou ld reduce the engine to rque respon se lag and im p rove the drive to rque respon se effectively. Key words　Con tinuou sly variab le tran sm ission , Sim u lation, Con tro l 时的发动机转矩特性及惯性矩, 给