SU1563626A1 - Method of optimizing loading of grain harvester - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to agricultural machinery, in particular to the field of control and automation of the combine process. The purpose of the invention is to increase the efficiency of the combine in varying conditions of harvesting. The essence of the invention is that during the operation, the combine load and grain losses behind the threshing apparatus are measured, taking into account the transport delay of the passage of the grain mass from the load sensor to the loss sensor, the change in load per unit of time is determined, the ratio of loss is determined the magnitude of the change in losses to the magnitude of the change in load, i.e. the slope, which is compared to a given one. 2 Il.

Description

FIELD OF THE INVENTION The invention relates to agricultural machinery industry, namely to the field of control of the combine process.

The aim of the invention is to increase the productivity of the combine harvester by reducing grain losses and optimizing the loading mode.

FIG. 1 shows a device for optimizing the loading of a combine; in fig. 2 shows the curves of the loss of grain from the supply of grain mass, obtained for different humidity.

A method for optimizing the loading of a combine harvester implements a device comprising a loading sensor 1 connected to a loading sensor signal generator 2 connected to a controllable delay element 3, the control input of which is connected to an engine shaft rotation sensor 4, and an output to processor input 5 The two other inputs of which are respectively connected through the formers 6 and 7 of the signals from the loss sensor to the sensor 8 of grain loss for straw and to the sensor 9 of grain loss for cleaning. The output of the processor 5 is connected via the driver of the power control signals 10 to the actuator 11 for changing the speed of movement of the signals.

A method for optimizing the load of a combine harvester includes measuring the grain loss in the cleaning zone and measuring the load amount of the grain mass, as well as the rotation of the engine, forming on each given

The time interval of the current control signal, comparing it with the setpoint signal and controlling the results of the comparison of the speed of movement of the combine harvester. The loss of free grain during the straw walker is measured, and the current value of the signal about the load of the grain mass is delayed by a time interval proportional to the rotation frequency of the motor shaft, after which the current control signal is defined as the ratio of the sum of the losses of the free grain loss to the straw walker catfish to change the load for the current time interval. The delay time interval is equal to the time of passage of the grain mass from the place of registration of the load of grain mass to the place of registration of losses of free grain at the straw walker.

The signal characterizing the combine loading from the loading sensor 1 is fed to the loading signal generator 2, from which the load information for a certain period of time goes to the controllable delay element 3. The delay time is equal to the transit time of the grain mass from the loading sensor 1 to the grain loss sensor 8 installed after the straw, and varies during operation only from the engine rotation frequency. From the delay element, the loading information is fed to the input of processor 5, From signal conditioners 6 and 7, for a certain period of time, processor 5 receives information about the loss of grain. In operation, the load of the threshing apparatus with a grain mass varies from an average value (qtp).

This is caused by the unevenness of grain density across the field and the change in the speed of movement of the combine. Processor 5 calculates the change in load (& q) and the change in grain loss caused by it & P. By OTAP wearing - is bootable

a coefficient (tg ' tangent) that is compared with a given one. The magnitude of the mismatch of a given load factor with the current is processed by the processor according to the PID control law, is fed to the driver 10 of the power signal

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control, the signal from which is fed to the actuator 11 to change the speed of movement of the combine.

If at the point of nominal grain losses draw a tangent to one of the characteristics of the family of characteristics of grain losses from feeds and grain mass obtained for different moisture content (W) of the grain mass- (Fig. 2), and then with the slope (tgod load factor) of this tangent If the tangents are related to the remaining characteristics of the family, then it can be seen that the tangent points are in the zone of nominal grain losses. This makes it possible, under varying cleaning conditions for one type of machine, to set one loading factor.

Claims (2)

Invention Formula one . A method for optimizing the loading of a combine harvester, including measuring the loss of free grain in the cleaning zone, measuring the amount of grain mass loading, engine rotational speed, generating a current control signal at each predetermined time interval, comparing it with the setpoint signal and controlling the results of the movement of the combine harvester, 5 characterized in that, in order to increase the productivity of the combine harvester by reducing grain losses and optimizing loading modes ki, measure the loss of free grain through the straw, and the current signal value of the load of the grain mass is delayed by a time interval proportional to the frequency of rotation of the motor shaft, after which the current control signal is defined as the ratio of the change of the sum of the losses of grain free time in the cleaning zone and for the straw catcher to the load on the current time interval. 2. The method according to claim 1, wherein the delay time interval is equal to the time of passage of the grain mass from the place of registration of the load of grain mass to the place of registration of the loss of free grain at the straw walker. 0 0 five 0 five 1 ff