Precise spraying control method of plant protection machine based on pressure steady state and state feedback
A technology of state feedback and plant protection machines, applied in computer control, program control, general control systems, etc., can solve the problems of backward plant protection machinery capabilities, insufficient effective use of pesticides, etc.
Active Publication Date: 2020-02-14
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology
Today, the annual output of pesticides in my country is nearly one million tons, but the effective use rate of pesticides is less than 40%. The reason is precisely because of the backwardness and insufficiency of plant protection machinery capabilities. The development and development of plant protection machinery suitable for modern agriculture has become the development of scientific agriculture today. top priority
So far, there is no control method that combines the complete plant protection machine application pressure system model with advanced intelligent control to make the plant protection machine spray pressure quickly and accurately overcome the disturbance of complex working conditions and track the expected pressure
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[0074] The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited by the embodiments.
[0075] A plant protection machine precision spraying control method combining pressure steady state and state feedback, characterized in that:
[0076] 1) Based on the pressure model between the liquid pump of the plant protection machine and the spraying pipeline, and the nonlinear factors of the spraying pressure system, the state equation of the pressure system between the liquid pump of the plant protection machine and the spraying pipeline is established;
[0077] 2) Design a spray pressure controller based on the combination of pressure steady state and state feedback control based on the pressure system state equation, so that the spray pressure can overcome the disturbance of complex working conditions and track the reference pressure;
[0078] 3) Based on the STM32 series micr...
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The precise spraying control method of plant protection machine combined with pressure steady state and state feedback, considering the nonlinear factors of the spraying pressure system and the pressure model between the liquid pump of the plant protection machine and the spraying pipeline, establishes the relationship between the liquid pump of the plant protection machine and the spraying pipeline. The state equation of the pressure system between the pipelines; the design of the spray pressure controller combined with the pressure steady state and state feedback control, based on the pressure system state equation, makes the spray pressure overcome the disturbance of complex working conditions and track the reference pressure. The invention establishes the state equation of the pressure system based on the liquid pump of the plant protection machine and the spraying pipeline; designs the precise spraying control of the plant protection machine combining the pressure steady state and state feedback; and makes it easy to make the spraying pressure of the plant protection machine overcome the disturbance tracking of complex working conditions Expected pressure, this control method can accurately control the spraying pressure of the plant protection machine, improve the spraying efficiency of the plant protection machine, and reduce the waste of pesticides.
Description
Technical field: [0001] The invention relates to the field of agricultural intelligent machinery automation, in particular to an intelligent control method for operating state parameters of plant protection machines. Background technique: [0002] With the rapid development of scientific agriculture and the development needs of mechanical agriculture, planting agriculture has higher and higher requirements for plant protection machinery. Today, the annual output of pesticides in my country is nearly one million tons, but the effective use rate of pesticides is less than 40%. The reason is precisely because of the backwardness and insufficiency of plant protection machinery capabilities. The development and development of plant protection machinery suitable for modern agriculture has become the development of scientific agriculture today. urgent task. [0003] The spraying effect is an effective indicator to measure the quality of plant protection machinery. A good spraying e...
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IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/24215
Inventor 李树江王琳王向东李雪
Owner SHENYANG POLYTECHNIC UNIV