基于速比调节的PTO恒转速控制策略研究  

Control Strategy for PTO Constant Speed Based on Speed-ratio Adjustment

作　　者：郭富强[1] 王建华[1] 付田志[1] 李志丹[1] 张露云 杨志刚 GUO Fuqiang WANG Jianhua FU Tianzhi LI Zhidan ZHANG Luyun YANG Zhigang(Luoyang Tractor Research Institute Co. , Ltd. , Luoyang 471039, China)

机构地区：[1]洛阳拖拉机研究所有限公司,河南洛阳471039

出　　处：《拖拉机与农用运输车》2017年第5期23-25,共3页Tractor & Farm Transporter

摘　　要：在拖拉机PTO作业过程中,由于负载变化会引起PTO转速的变化,导致作业质量下降,我们利用发动机要求转速与实际转速的差值,并结合实际转速的变化率对传动系速比进行调节,实现PTO转速的恒定输出。利用MATLAB中的Simulink模块对控制系统进行建模,通过仿真分析与实车测试,验证了控制策略的正确性与实用性。The PTO speed changes along with the load change during the tractor PTO operation,which can decline the quality of the operation. The difference between demanded speed and actual speed of the engine and change rate of actual engine speed are adopted to adjust the transmission, ratio, and then the constant PTO speed is realized. The control system is modeled by the Simulink of MATLAB, and the correctness and practicability of Control strategy are verified according to simulation analysis and vehicle test.

关 键 词：动力输出 无级变速 恒转速 速比 

分 类 号：S219[农业科学—农业机械化工程]