力位综合系数调节方法研究

doi:10.13733/j.jcam.issn.2095-5553.2024.06.007

摘要/Abstract

摘要：

针对力位综合调节中综合系数的取值问题，提出一种综合系数自动调节方案。通过Matlab/simulink研究不同耕作条件下综合系数与耕深的关系，依据结果建立以耕作阻力为开关的调节方法；并基于牵引阻力的计算公式设计模拟耕作阻力波动的随机信号模块。为验证所设计综合系数调节方法的控制效果，采用综合系数取值0.5的耕深控制策略与其进行仿真对比。结果表明：该方案能够随着耕作阻力的改变及时地对综合系数进行调整，具有较好的环境适应性，最大超调量相较于另一调节方案同比降低75.56%；保证耕深在合理范围的同时兼顾发动机负荷稳定性。

关键词: 力位综合调节, 综合系数, 耕作阻力, 牵引阻力, 耕深均匀, 自动控制

Abstract:

Aiming at the problem of the value of comprehensive coefficient in comprehensive adjustment of force position, an automatic adjustment scheme of comprehensive coefficient was proposed. The relationship between comprehensive coefficient and tillage depth under different tillage conditions was studied by Matlab/simulink. According to the results, the regulation method with tillage resistance as switch was established. Based on the formula of traction resistance, a random signal module was designed to simulate the fluctuation of tillage resistance. In order to verify the control effect of the designed comprehensive coefficient adjustment method, the tillage depth control strategy with the comprehensive coefficient of 0.5 was used for simulation comparison. The results show that the scheme can adjust the comprehensive coefficient in time with the change of tillage resistance, and has good environmental adaptability. The maximum overshoot is reduced by 75.56% compared with the other scheme. The stability of engine load is also taken into account while the ploughing depth is in a reasonable range.

Key words: comprehensive adjustment of force and position, comprehensive coefficient, tillage resistance, tractive resistance, even tillage depth, automatic control

中图分类号:

S219.032.4

付晓, 徐锐良, 闫祥海, 徐立友. 力位综合系数调节方法研究[J]. 中国农机化学报, 2024, 45(6): 37-41.

Fu Xiao, Xu Ruiliang, Yan Xianghai, Xu Liyou. Study on adjustment method of force-position comprehensive coefficient[J]. Journal of Chinese Agricultural Mechanization, 2024, 45(6): 37-41.

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