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A predictive system for feed quantity of combine based on fuzzy neural network was proposed to solve the delay problem of measuring feed quantity. This paper constructed the predictive system according to the actual destination and then decided the input and output of the network and its fuzzy dividing. At the same time, this paper investigated the construction of fuzzy rule base and designed the...
In order to study the law of motion of material particles on the screen, the numerical simulation of oblique impact between single particle and the screening surface was carried on. The results showed that, with the increase of throwing index, the motion of single particle on the screening surface undergoes nonlinear dynamics phenomena, such as period bifurcation, period doubling bifurcation, and...
Vibrating sieve is one of the main parts of a combine. When the types or parameters were changed, the whole model would be changed. In this paper, the three-dimensional parametric model of vibrating sieve was established based on UG. Then the custom menus, UIStyler dialog boxes and control procedures were designed by using UG / Open API secondary development. In the environment of VC6.0, the main...
The main concern of this paper was to establish the force model of seeds motion during the sucking process and to find different factors impacting seeds suction performance. Then the mathematical model of forces acting on seeds during the sucking process was established in order to optimize the working parameters including the sucking force F, the rotational speed of cylinder ω and the position angle...
The measurement method of irregular field area is studied in this paper. A multifunctional measuring instrument of farmland area is developed by using GPS model. The instrument mainly consists of a GPS module, a micro-controller, keyboards, a LCD and a micro-printer. It can measure the area of irregular field rapidly, set the unit price charge of agriculture mechanical operation and calculate the...
According to the actual situation of combine harvester workload, a load feedback controller based on theory of fuzzy control is designed by means of detecting the information such as threshing cylinder speed, crop screw conveyor speed, feed-in quantity, loss rate which can reflect the workload of combine harvester and researching on multi-signal fusion method. It can auto-control the forward speed...
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