Calibration system and control method for speed given signal of diesel locomotive diesel engine

Abstract

The invention relates to the technical field of electric drive systems of diesel locomotives, in particular to a diesel-locomotive diesel engine rotation speed given signal calibration system. The system comprises a diesel engine rotation speed given signal calibration switch, a clutch gear lever, an on-board microcomputer, a diesel engine speed regulating panel, an electronic injection controller and a diesel engine rotation speed detection module. The on-board microcomputer taken as a control core is communicated with the diesel engine speed regulating panel through a bus, the diesel engine speed regulating panel is externally connected with the electronic injection controller, and the on-board microcomputer is communicated with each of the clutch gear lever and the diesel engine rotation speed detection module through a hard wire and additionally connected with the diesel engine rotation speed given signal calibration switch through a hard wire. Through the system, the defects that a conventional mode is low in control precision, large in accumulated error, susceptible to aging of components and the like can be made up, and rotation speed overshoot of no-load operation of a diesel engine in a closed-loop mode is avoided. On the basis of accurate speed reduction of the diesel engine of a diesel locomotive, requirements of locomotive operators are met to the utmost extent.

Description

technical field [0001] The invention relates to the technical field of an electric transmission system of a diesel locomotive, in particular to a calibration system and a control method for a given signal of a rotational speed of a diesel engine of an internal combustion locomotive. Background technique [0002] In the diesel locomotive control system equipped with EFI controller, a very common form of diesel engine speed given signal is PWM wave (Pulse-Width Modulation). The EFI controller adjusts the diesel engine speed according to the pulse width of the PWM signal sent by the host computer. There are two ways for the upper computer to adjust the PWM signal: [0003] (1) Normal mode [0004] The main principle is: the on-board microcomputer implements conventional control on the EFI controller. The on-board microcomputer sends a PWM signal with a certain pulse width to the EFI controller, and the pulse width corresponds to the gear position of the main handle. In the ...

AI Technical Summary

Problems solved by technology

[0007] Of the above two modes, the "normal mode" has disadvantages such as low control accuracy, large cumulative error, and susceptible to device aging; the "closed-loop mode" can make up for the shortcomings of the "conventional mode", but it is easy to form a rotational speed when the diesel engine is running without load. overshoot

In addition, because the "closed-loop mode" control algorithm is relatively complex, and the "normal mode" is relatively simple and clear, locomotive operators often prefer the "normal mode"

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