Microcomputer control simulation type through current air-liquid conversion train braking system
A braking system and gas-liquid conversion technology, applied in the field of the braking system of maglev vehicles, can solve the problems of inability to adjust the braking force, technical difficulty, inability to adjust the control strategy, etc., to achieve good riding comfort, accurate and reliable transmission, The effect of simplifying the structure
Active Publication Date: 2009-04-08
JIANGXI HUAWU BRAKE
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Problems solved by technology
In order to ensure the reliable transmission of instructions, it is necessary to add complex anti-interference measures such as filtering. This anti-interference measure is relatively passive, and has strict requirements on the stability of the power supply voltage, so it is technically difficult to implement
[0007] In addition, my country's existing main-line railways, whether it is locomotive brakes or passenger and freight car brakes, either use air brakes or electro-pneumatic brakes, but no microcomputer control is introduced.
The adjustment of the braking force can only be roughly controlled by the hardware, and the braking force cannot be dynamically adjusted according to the real-time speed, load and line conditions of the train, and the control strategy cannot be intelligently adjusted according to the vehicle operating environment and the vehicle's own parameters. Anti-impulse control, deceleration control cannot be implemented according to the comfort principle of the human body to ensure good ride comfort
Method used
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[0021] see figure 1 , Fig. 2, Fig. 3 and Fig. 4, the brake system of the present invention includes a control system and a mechanical execution unit. The control system receives commands from the driver or the vehicle automatic protection system through the electrical command line and network cable. The electrical command line 30 has PWM signals for transmitting common and fast braking analog commands. It has two twisted-pair shielded wires, PWM1 and PWM2. The lines are mutually redundant to enhance the reliability of the system. Electrical command signals include other on / off command lines (see Figure 2). The network cable 40, as part of the redundancy of the main commands, also transmits the relevant commands to the control system, and also reports the status and fault signals of the system to the train control center or the driver. Commonly used or fast braking instructions are transmitted to the microcomputer braking control unit 50 of each car, and the microcomputer bra...
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The analog direct current gas-liquid conversion brake system combines the energy together with simplified structure. It uses compressed air to improve safety. With compressed air less than 1Mpa inside the hose between the vehicles, chassis and suspension, it increase safeness greatly. The emergency brake can adjust the brake force based on the air suspended pressure.
Description
【Technical field】 [0001] The invention relates to a train brake system, in particular to a brake system for a maglev vehicle. 【Background technique】 [0002] The braking of maglev trains mainly relies on electric braking, such as regenerative braking of linear motors, reverse traction braking, eddy current braking, etc. to transfer the kinetic energy of the train. ) in the design of the maglev vehicle braking system still follows the traditional rail vehicle design principles, using friction braking as a safe braking execution method. [0003] According to the particularity of the maglev vehicle, the safety braking of the maglev vehicle basically adopts the way of friction between the brake pad on the vehicle and the track. Because the electrical equipment in the lower part of the maglev vehicle occupies a large space, the actuators (such as clamps) of the safety brake are mostly driven by hydraulic pressure to facilitate the miniaturization design. [0004] The safety bra...
Claims
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IPC IPC(8): B60T8/17
Inventor 吴萌岭
Owner JIANGXI HUAWU BRAKE