Train slide control device and train slide control method

• US 8,457,818 B2
• Filed: 05/08/2009
• Issued: 06/04/2013
• Est. Priority Date: 06/20/2008
• Status: Active Grant

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Itano, Yasuharu, Yamada, Hiroshi, Matsuyama, Etsuji
• Primary Examiner(s): Zanelli, Michael J
• Application Number:
  US12/937,124
• Publication Number:
  US 20110029167A1
• Time in Patent Office: 1,488 Days
• Field of Search: None
• US Class Current: 701/20
• CPC Class Codes: B60T 13/665 the systems being specially adapted for transferring two or more command signals, e.g. railway systems B60T13/662 takes precedence
• CPC Class Codes: B60T 17/228 for railway vehicles
• CPC Class Codes: B60T 8/1705 for rail vehicles

Abstract

A train slide control device and a train slide control method capable of further improving the precision of slide control are achieved. The train slide control device comprises: an electromagnetic valve unit; a relay valve that outputs a pressure of the brake cylinder; and a slide controller that includes: a velocity-difference detecting unit that detects a velocity difference of each wheel based on a velocity signal; a deceleration calculating unit that calculates a deceleration of a train based on the velocity signal; a sliding-amount determining unit that determines a sliding-amount of each wheel based on the velocity difference and deceleration; and a brake-cylinder-pressure calculating unit that calculates a pressure control signal for controlling a pressure of the brake cylinder based on:

the sliding-amount; a brake command for obtaining a predetermined deceleration; and a signal that indicates the pressure of the compressed air and a pressure of the brake cylinder.

Claims

1. A train slide control device comprising:

a slide control unit configured to control an electromagnetic valve unit and a relay valve;

the electromagnetic valve unit having a supply valve that supplies supplied compressed air, through the relay valve, to a brake cylinder and an exhaust valve that adjusts a pressure of the supplied compressed air;

the relay valve is configured to output a pressure of the brake cylinder according to the compressed air supplied from the electromagnetic valve unit; and

the slide control unit includes;

a velocity-difference detecting unit configured to detect a velocity difference of each wheel of a train, based on a velocity signal;

a deceleration calculating unit configured to calculate a deceleration of the train based on the velocity signal;

a sliding-amount determining unit configured to determine a sliding-amount of each wheel of the train based on the velocity difference and deceleration; and

a brake-cylinder-pressure calculating unit configured to calculate a pressure control signal for controlling a pressure of the brake cylinder based on;

the sliding-amount;

a brake command for obtaining a predetermined deceleration; and

a signal that indicates the pressure of the compressed air and pressure of the brake cylinder.

2. The train slide control device according to claim 1, wherein, when a slide has occurred, the slide control unit calculates the pressure control signal by using a value of a pressure of the brake cylinder as a re-adhesion value based on a signal indicating a pressure of the brake cylinder outputted from the relay valve.

3. The train slide control device according to claim 2, further comprising:

a first load compensating unit that is mounted on a front carriage in a traveling direction of a train and outputs a first load compensation signal corresponding to a train vehicle weight; and

a second load compensating unit that is mounted on a rear carriage in a traveling direction of a train and outputs a second load compensation signal corresponding to a train vehicle weight, wherein

when a slide has occurred in the rear carriage, the slide control unit adds a slide control value calculated by the second load compensation signal and the sliding amount to the pressure control signal corresponding to the first load compensation signal.

4. The train slide control device according to claim 1, further comprising:

a first load compensating unit that is mounted on a front carriage in a traveling direction of a train and outputs a first load compensation signal corresponding to a train vehicle weight; and

a second load compensating unit that is mounted on a rear carriage in a traveling direction of a train and outputs a second load compensation signal corresponding to a vehicle weight, wherein

when a slide has occurred in the rear carriage, the slide control unit adds a slide control value calculated by the second load compensation signal and the sliding amount to the pressure control signal corresponding to the first load compensation signal.

5. A train slide control device comprising:

a slide control unit configured to control an electromagnetic valve unit and a relay valve;

the electromagnetic valve unit having a supply valve that supplies supplied compressed air, through the relay valve, to a brake cylinder and an exhaust valve that adjusts a pressure of the supplied compressed air;

the relay valve is configured to output a pressure of the brake cylinder according to the compressed air supplied from the electromagnetic valve unit;

a deceleration sensor configured to detect a deceleration of a train; and

the slide control unit includes;

a velocity-difference detecting unit configured to detect a velocity difference of each wheel of a train based on a velocity signal;

a deceleration calculating unit configured to calculate the deceleration of the train based on the velocity signal;

a sliding-amount determining unit configured to determine a sliding-amount of each wheel of the train based on the velocity difference and the deceleration; and

a brake-cylinder-pressure calculating unit configured to calculate a pressure control signal based on the sliding-amount.

6. The train slide control device according to claim 5, wherein a brake-cylinder-pressure calculating unit calculates the pressure control signal based on the sliding amount, a brake command, a pressure of the compressed air, and a signal indicating the pressure of the brake cylinder.

7. The train slide control device according to claim 6, further comprising:

a first load compensating unit that is mounted on a front carriage in a traveling direction of a train and outputs a first load compensation signal corresponding to a train vehicle weight; and

a second load compensating unit that is mounted on a rear carriage in a traveling direction of a train and outputs a second load compensation signal corresponding to a train vehicle weight, wherein

when a slide has occurred in the rear carriage, the slide control unit adds a slide control value calculated by the second load compensation signal and the sliding amount to the pressure control signal corresponding to the first load compensation signal.

8. The train slide control device according to claim 5, wherein, when a slide has occurred, the slide control unit calculates the pressure control signal by using a value of a pressure of the brake cylinder as a re-adhesion value based on a signal indicating a pressure of the brake cylinder outputted from the relay valve.

9. The train slide control device according to claim 8, further comprising:

a first load compensating unit that is mounted on a front carriage in a traveling direction of a train and outputs a first load compensation signal corresponding to a train vehicle weight; and

a second load compensating unit that is mounted on a rear carriage in a traveling direction of a train and outputs a second load compensation signal corresponding to a train vehicle weight, wherein

when a slide has occurred in the rear carriage, the slide control unit adds a slide control value calculated by the second load compensation signal and the sliding amount to the pressure control signal corresponding to the first load compensation signal.

10. The train slide control device according to claim 5, further comprising:

a first load compensating unit that is mounted on a front carriage in a traveling direction of a train and outputs a first load compensation signal corresponding to a train vehicle weight; and

a second load compensating unit that is mounted on a rear carriage in a traveling direction of a train and outputs a second load compensation signal corresponding to a train vehicle weight, wherein

when a slide has occurred in the rear carriage, the slide control unit adds a slide control value calculated by the second load compensation signal and the sliding amount to the pressure control signal corresponding to the first load compensation signal.

11. A train slide control method applicable to a train slide control device including an electromagnetic valve unit having a supply valve that supplies supplied compressed air to a brake cylinder and an exhaust valve that adjusts a pressure of the supplied compressed air, and a relay valve that outputs a pressure of the brake cylinder according to the compressed air supplied from the electromagnetic valve unit, the train slide control method comprising:

a detecting step of detecting a velocity difference of each wheel of a train and deceleration of the train based on a velocity signal of each wheel of the train;

a first calculating step of calculating a sliding amount of each wheel of the train based on the velocity difference and the deceleration; and

a second calculating step of calculating a pressure control signal based on the sliding amount, a brake command for obtaining predetermined deceleration, and a signal indicating a pressure of the brake cylinder.

12. The train slide control method according to claim 11, wherein at the second calculating step, the pressure control signal is calculated by determining a value of a pressure of the brake cylinder as a re-adhesion value using the signal indicating the pressure of the brake cylinder.

13. A train slide control method applicable to a train slide control device including an electromagnetic valve unit having a supply valve that supplies supplied compressed air to a brake cylinder and an exhaust valve that adjusts a pressure of the supplied compressed air, a relay valve that outputs a pressure of the brake cylinder according to the compressed air supplied from the electromagnetic valve unit, and a deceleration sensor that detects deceleration of a train, the train slide control method comprising;

a detecting step of detecting a velocity difference of each wheel of a train and a deceleration of the train based on a velocity signal of each wheel of the train and an output of the deceleration sensor;

a first calculating step of calculating a sliding amount of each wheel of the train based on the velocity difference and the deceleration; and

a second calculating step of calculating a pressure control signal based on the sliding amount, a brake command for obtaining predetermined deceleration, a signal that is outputted from the electromagnetic valve unit and indicates a pressure of the compressed air, and a signal indicating a pressure of the brake cylinder.

14. The train slide control method according to claim 13, wherein at the second calculating step, the pressure control signal is calculated by determining a value of a pressure of the brake cylinder as a re-adhesion value using the signal indicating the pressure of the brake cylinder.