轴向柱塞泵是液压传动系统中最为重要的动力元件，但现有轴向柱塞泵存在轴向液压力不平衡、振动和噪声大等问题，本项目通过结构创新，提出一种新型多排轴向柱塞泵，并以此为研究对象。研究新型多排轴向柱塞泵缸体和配流盘的动力学特性，合理设置柱塞孔分布，实现轴向液压力平衡；设计新型多排轴向柱塞泵配流副的结构，分析配流副的受力状态，建立配流副的流动模型，进行计算机仿真，得出配流副的摩擦润滑特性，并建立配流副的泄漏模型；研究斜盘多个斜面倾角的匹配关系，并与缸体的柱塞孔进行匹配，建立其设计准则；建立新型多排轴向柱塞泵的数学模型，进行动态分析，优化关键零部件结构参数；对新型多排轴向柱塞泵的进行试验，测试其流量脉动、振动噪声等性能，进一步优化结构参数，最终建立新型多排轴向柱塞泵的设计方法和评价准则，为液压传动系统提供一种性能优异的动力元件。

Axial piston pump is a most important power unit of hydraulic transmission system, but the axial piston pump in existence have some problem such as unbalanced axial hydraulic pressure, outstanding vibration and acoustic noise. A new type multi-ring axial piston pump is put forward through innovation design of sturucture and is used as research objiect in this project. The dynamical Characteristics of the new type axial piston pump's block and port plate is studied, and the block's column holes is reasonable layout, so the axial hydraulic pressure can be balanced; The structure of the new type mulit-ring axial piston pump's port plate pair is designed, its Stress state is analysed, its flow model is established and simulated by the computer, so its character of friction and tribology is put forward and its leakage model is established; the match relationship of the swash plate's different bevel dip angel which must match to the block's column holes is studied, so its design principles is determined; The mathematic model of the new type axial piston pump is proposed, the structure of the key parts can be is optimized by dynamic simulation; the flow pulsation and vibration and acoustic noise of the new type mulit-ring axial piston pump is tested, so the structure parameters can be further optimized. At last the design princple and the evaluation methodology is put forward, it can product a good performance power unit for hydraulic transmission system.