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The steering system produces stick-slip vibration and noise due to the relative rotational friction between various components, resulting in unsmooth steering. To solve this problem, this paper studies the practical problems of stick-slip caused by worm gear deceleration mechanism of steering gear. The source of the problems are identified through tests, and the relevant influencing factors are determined by establishing a theoretical force model and CAE simulation analysis model. The torque anti-drop function MSP (Mechanical Stuck Prevention) of the steering gear is developed simultaneously. The software functional architecture and module interfaces are designed and the activation parameters are set through the debugging and optimization of the software functions. Finally, the output square wave signal of the motor torque 0.03 N·m is locked, which satisfies the software real-time control requirement, and improves the handing comfort of the vehicle.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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