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Electronic Speed ​​Control of Locomotives

A technology of engine speed and speed, applied to locomotives, motor vehicles, control drives, etc., can solve problems such as unsuitable speed control

Active Publication Date: 2020-09-11
CATERPILLAR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the system described in the '664 publication may not be suitable for speed control of some types of machines or some machine operating conditions

Method used

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  • Electronic Speed ​​Control of Locomotives
  • Electronic Speed ​​Control of Locomotives
  • Electronic Speed ​​Control of Locomotives

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0014] The present disclosure will now be described in detail with reference to the accompanying drawings, unless otherwise specified, wherein the same reference numerals always refer to the same elements.

[0015] figure 1 Illustrated is a machine 100 according to an aspect of the present disclosure. The machine 100 may be a rail vehicle; an "over-the-road" vehicle, such as a truck used in transportation; an off-road vehicle; or it may be a vehicle for execution in industries such as mining, construction, agriculture, transportation, or the Any other type of machine operating in association with any other industry known in the art. For example, the machine 100 may be an off-highway truck, rail locomotive, and earth-moving machine, such as a loader, excavator, dump truck, bucket machine, motor grader, material handling machine, and so on. figure 1 The specific machine 100 shown is a rail locomotive.

[0016] The machine 100 includes an engine 102 operatively coupled to a controlle...

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PUM

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Abstract

A driveline for a machine includes an engine, brakes, and a controller operatively coupled to the engine and brakes. The controller is configured to generate a first speed error based on the first speed command signal and the first ground speed signal; generate a first engine speed command signal based on the first speed error; send the first engine speed command signal to the engine ; comparing the first speed error with an upper threshold; setting the brake command signal as an implementation value when the magnitude of the first speed error is greater than the magnitude of the upper threshold; implementing in response to setting the brake command signal to an implementation value braking; and increasing the speed of the engine in response to the first engine speed command signal while the brake command signal is set to an enforced value.

Description

Technical field [0001] This patent disclosure generally relates to a system and method for controlling the ground speed of a machine, and more particularly to a system and method for controlling the ground speed of a locomotive using a controller operatively coupled to the engine and brake system. Background technique [0002] Closed loop control is known to be used to control the speed at which a machine transmits output, such as the ground speed of the machine, the rotation speed of machine components or other speed-controlled machine parts. Generally speaking, closed-loop speed control operates by minimizing the difference between the desired speed and the actual speed of the machine part of interest. Usually, the actual speed of the controlled entity is fed back to the controller, which can implement a proportional-integral-derivative (PID) control scheme to generate a power command signal. When applied, the power command signal can reduce the difference between the actual s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W10/06B60W10/18B60W40/105B60L50/10
CPCB60W10/06B60W10/18B60W40/10B60L15/10B60L15/2063B60L2200/26B60L2240/12B60L2240/441B60L2250/26B60L2260/40Y02T10/72B60W30/18063B60L50/10Y02T10/64Y02T10/70B60W10/184B60W30/188B60W2510/0604B60W2510/0638B60W2510/0657B60W2710/0644B61C15/00
Inventor K·恩古C·赖尔森J·福萨姆
Owner CATERPILLAR INC