Valve assembly and method for controlling the air suspension level of a rail vehicle
A rail vehicle and air suspension technology, which is applied in the vehicle control route device, the device for lateral relative movement between the chassis and the bogie, transportation and packaging, etc., can solve the problem of not fully considering the tolerance of the disturbance variable components, and achieve The effect of effective pneumatic adjustment function and simple pneumatic adjustment function
Active Publication Date: 2021-10-01
AVENTICS GMBH
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Furthermore, the presetting of a fixed control characteristic to a series of fixed values has the additional disadvantage that unacquired disturbance variables (such as changed ambient and system temperatures or caused by Component tolerances due to wear effects)
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[0030] figure 1 A partial area of a rail vehicle is shown in a schematic rear view. The valve device 1 is arranged in the lower region of the vehicle body 2 . It is mechanically connected to the chassis frame 5 via the lever 3 and the measuring rod 4 . In this case, the chassis frame 5 can also be embodied as a bogie. Between the chassis frame 5 and the vehicle body 2 , an air suspension arrangement consisting of two air spring bellows 6 and 6 ′ is arranged as a secondary suspension. The corresponding current travel h of the secondary suspension 6 is therefore the same as the corresponding distance between the body 2 and the chassis frame 5 . Alternatively, the secondary suspension can also be designed here as a single spring bellows bellows. Arranged below the chassis frame 5 is a main suspension 7 , by means of which the axle 8 and the two wheels 9 and 9 ′ are elastically supported relative to the chassis 5 . The respective current travel h of the secondary suspension...
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The invention relates to a valve assembly and a method for controlling the air suspension level of a rail vehicle. A system is provided, which is constructionally simple to build and easy to parameterise, for controlling the air suspension level of a rail vehicle. The object of the invention is achieved by a valve assembly (1) for controlling the air suspension level of a rail vehicle, comprising a proportional directional valve, a sensor means for continuously detecting a distance variable representing the distance of a carriage body (2) from a chassis or bogie of the rail vehicle, and a digital control device, wherein the control device is designed to be programmable for determining a control deviation based on the actual distance detected by the sensor means and a comparison with a predefinable target distance, and for continuously generating control variables as a linear function of the determined control deviation and the carriage body travelling speed. The object is also achieved by a method for controlling the air suspension level of a rail vehicle with a proportional directional valve, a sensor means for continuously detecting a distance variable representing the distance of the carriage body (2) from a chassis or bogie, and a digital control device, wherein a control deviation is determined by the control device based on a comparison of the actual distances detected by the sensor means with a predefinable target distance, and a control variable is generated continuously as a linear function of the determined control deviation and the carriage body travelling speed.
Description
technical field [0001] The present invention relates to a valve arrangement and method for adjusting the air suspension level of a rail vehicle. Background technique [0002] The use of air suspensions for rail vehicles is basically known in the prior art. Such an air suspension is usually implemented in the case of rail vehicles in the form of an air spring bellows (Luftfederbälge) arranged between the wagon's wagon and the chassis or bogie and acts as a support for the wagon relative to the chassis or bogie. elastically supported secondary suspension. It moves the cabin as far as possible through the passive suspension characteristics and compressibility of the statically loaded air spring bellows and / or its actively controlled intake (Beaufschlagung, sometimes called loading) and exhaust during driving operation Decoupled from unevenness of rail facilities. The actively controlled intake and exhaust of the spring bellows makes it possible in principle simultaneously to...
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IPC IPC(8): B61F5/24
CPCB61F5/24B61L15/0058
Inventor C·布希T·佩斯H-H·迈耶
Owner AVENTICS GMBH