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Brake pressure calculation device, brake control system and program

A computing device and brake pressure technology, which can be used in railway brake systems, brakes with brakes, brakes, etc., and can solve problems such as the actual deceleration deviating from the target value

Active Publication Date: 2013-09-25
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, if the target value of the air pressure of the brake cylinder is set without considering the influence of the operating environment such as gravity, the actual deceleration of the vehicle will deviate from the target value

Method used

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  • Brake pressure calculation device, brake control system and program
  • Brake pressure calculation device, brake control system and program
  • Brake pressure calculation device, brake control system and program

Examples

Experimental program
Comparison scheme
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Embodiment approach 1

[0030] Hereinafter, Embodiment 1 of the present invention will be described. Embodiment 1 is applicable to drive shafts 115 having four shafts ( figure 1 ) of railway vehicles (hereinafter referred to as vehicles). The vehicle includes a body for accommodating passengers, and two carts arranged on the front and rear sides of the lower portion of the body, and two drive shafts 115 are supported on each of the carts. Wheels 116 rolling on rails are attached to both ends of each drive shaft 115 .

[0031] like figure 1 As shown, the brake control system 1 according to Embodiment 1 includes: a brake pressure calculation device 100 , an air spring pressure sensor 101 , a VVVF (Variable Voltage Variable Frequency) conversion device 102 , a pressure generating unit 103 , a brake cylinder 104 , Brake shoe 105 , control pressure sensor 106 , speed sensor 107 , slip detector 108 , and slip prevention portion 109 . Among them, brake pressure calculation device 100 , pressure genera...

Embodiment approach 2

[0078] Next, Embodiment 2 will be described. Embodiment 2 considers that due to the increase in pressure of the transfer valve 132, the lag in response to the cylinder pressure and serpentine movement, wear and thermal deformation on the valve body of the transfer valve 132, and the reduction in the setting accuracy of the cylinder pressure are considered. In addition to the deceleration In addition to the difference, the difference between the target value and the actual value of the cylinder pressure (hereinafter referred to as the difference of the cylinder pressure) is used to obtain the corrected value of the target cylinder pressure.

[0079] Figure 7 The brake control system 3 of the shown embodiment 2 except figure 1 In addition to the structure, a brake cylinder pressure sensor 200 is provided. The brake cylinder pressure sensor 200 is arranged on the pipeline between the relay valve 132 and the brake cylinder 104 . The brake cylinder pressure sensor 200 measures...

Embodiment approach 3

[0136] Next, Embodiment 3 of the present invention will be described. As shown in FIG. 16 , in the brake control system 4 of the present embodiment, the brake pressure calculating device 400 is composed of an air brake control unit 113 and an air brake correction control unit 114 . The target deceleration acquisition unit 110 , the necessary braking force acquisition unit 111 , and the pneumatic subtraction command unit 112 are composed of a TIMS (Train Information Management System) 500 .

[0137] A plurality of brake pressure calculation devices 400 are provided for each self-drive shaft 115 and each other drive shaft 115 . When an abnormality occurs in one of the brake pressure calculation devices 400, the TIMS 500 sends the signals output by the necessary braking force acquisition unit 111 and the pneumatic subtraction command unit 112 (air brake signal and subtraction instruction). The other brake pressure computing device 400 obtains the target cylinder pressure based ...

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Abstract

A brake pressure calculation device (100) acquires target cylinder pressure that is the target value of pressure within a brake cylinder (104) of an air brake, and is provided with a target cylinder pressure acquisition unit (120), a deceleration difference information acquisition unit (141), and a target cylinder pressure correction value acquisition unit (142). The target cylinder pressure acquisition unit (120) acquires the target cylinder pressure on the basis of required brake force and a target cylinder pressure correction value. The deceleration difference information acquisition unit (141) acquires deceleration difference information indicating the difference between the target value of deceleration and the actual value of deceleration. The target cylinder pressure correction value acquisition unit (142) acquires the target cylinder pressure correction value on the basis of the deceleration difference information.

Description

technical field [0001] The present invention relates to a brake pressure calculation device for obtaining a target value of pressure in a brake cylinder of an air brake, a brake control system and a program including the brake pressure calculation device. Background technique [0002] Patent Document 1 discloses a braking device for railroad vehicles that generates braking force by supplying air pressure to a brake cylinder to press a brake shoe against a wheel. In this braking device, the braking force required to bring the deceleration of the vehicle to a target value is calculated, and the air pressure supplied to the brake cylinder is controlled to generate the braking force. [0003] Patent Document 1: Japanese Patent Application Laid-Open No. 11-235972. [0004] The friction coefficient between the brake shoe and the wheel changes according to the rotation speed of the wheel, the temperature of the brake shoe, and the state of deterioration. When the air pressure of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61H1/00
CPCB60T8/1705B60T8/174B60T13/665B60T17/228B60T8/72B60T8/74B61H1/00
Inventor 松山悦司
Owner MITSUBISHI ELECTRIC CORP
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