| 摘要: |
| 在室内土槽台车上，研制了用于滑转率控制实验的拖拉机机组瞬态阻力模拟器，利用磁粉制动器作为施力装置。它可以替代拖拉机机组中的犁和电液伺服系统，既能模拟静态阻力和阻力扰动，又能模拟犁调节过程中的阻变化，这为研究滑转率控制系统的特征、寻求最佳控制算法提供了必要的实验手段。 |
| 关键词: 拖拉机 滑转率 阻力模拟 磁粉制动器 |
| DOI： |
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| 基金项目:国家自然科学基金 |
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| Research and Design of a Simulator of Tractor-Combination Transient Resistance for Slip Control System |
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| Abstract: |
| To study transient performance of a wheel type tractor in the respect of slip controlsystem, a tractor resistance simulator is developed which is composed of a magnetic powder brakeused for exerting force on the model tractor. The simulator which replaces the plough and electro-hydraulic servo subsystem can be used for simulating the transient tractor-combination resistace which consists of static tractor-combination resistance, disturbing resistance and the changing resistance which will occur during plowing. Based on the simplified mathematical model ofelectro-hydraulic subsystem of a tractor-combination system, the changing resistance appearingin tillage operation is simulated. The simulator is suitable for different types of tractor throughchanging the controlling software and hardware. It provides a facility for easily finding out an optimum control algorithm of the slip control system. |
| Key words: tractor,slip,resistance simulator,magnetic powder brake, |
