| 1. | Tractor terminology - hydraulic hitch system and drawbar , hook
液压悬挂系及牵引拖挂装置 |
| 2. | Tractor terminology - hydraulic hitch system and drawbar hook
拖拉机术语液压悬挂系及牵引拖挂装置 |
| 3. | The control principle is analyzed on the hydraulic hitch . the adjusted fashion and control methods are choose
为实现这个目标，确定了液压悬挂系统的调节方式和控制方法。 |
| 4. | So performances of the hydraulic hitch decide performances of tractor . theory and experiment are studied on the hydraulic hitch and the hydraulic loading
论文研究的内容主要是液压悬挂系统和液压加载系统的理论分析和试验研究。 |
| 5. | Experiments of the force and location adjusted fashion are finished adopting fuzzy control . the results of experiments express fuzzy control on the hydraulic hitch is feasible
采用模糊控制后，对液压悬挂系统进行力调节、位调节的试验研究，试验结果表明，采用模糊控制是可行的，能够得到较好的效果。 |
| 6. | The parameters which the rotate speed change , working resistance and depth are included synthetically control the hydraulic hitch in tractor . the tractor is working at best state . the performance sof tractor are best expect interferers
液压悬挂系统是拖拉机作业机组的一个组成部分，对液压悬挂系统和液压加载系统的性能进行最优控制理论分析和控制方法的研究，是保证拖拉机作业机组达到最优性能的基础。 |
| 7. | The mathematical model is establishd on the force . based on the simulation of matlab , in the pid control method , the dynamic performance analysis to the control system is also given , include time and frequency responses . controllability and observability are analyzed to the hydraulic hitch
在论文中，以力调节为例建立了液压悬挂系统的数学模型，采用pid控制方法对系统进行了理论分析，并利用matlab软件进行了仿真分析，给出了时域和频域仿真结果。 |
| 8. | The hydraulic hitch is the common means that the operator be joined with the prime motor in farm machine . the paper made the hitch ? vector equation and found the solutions by newton iteration method through the strong numerical calculation function of computer . so the analytical solution insteaded the graphic method , the design accuracy and efficiency were acceptable
本研究推导了悬挂机构的矢量方程，并借助于计算机强大的数值计算功能，用牛顿迭代法解决了解矢量方程的问题，从而用解析法取代了图解法设计此类机构，提高了设计精度和效率。 |
