CS236554B1 - Driving axle slip regulator traction vehicle for adhesive limit running - Google Patents

Abstract

Traction driven axle slip regulator intermediate adhesion vehicle the essence is that the generator output speed difference, axle rotation is connected first, to the input of the proportional regulator, whose output is connected to the input drive axle controller and on the other hand a non-linear circuit whose output is connected to the integral controller input. The integral controller input is also connected feedback feedback connected the second outlet to the integral output the controller whose input is also connected s / level generator output. The integral controller output is connected to the input of the axle drive controller. It is preferred that the slip protection output was connected via the derlusion member to the input integral controller and integral input the controller has been connected to the generator output vehicle speed signal.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slip regulator for a traction vehicle driven axle for an adhesion limit.

Up to now, slip protection has been used which, when the set speed difference is exceeded, has reduced the motor current by a value that must have been sufficient to eliminate the slip at all times. i '

After its completion, the current of the engines increased to its original value. This mode of operation is unsatisfactory for high-performance locomotives, especially in poor adhesion conditions or when driving with automatic speed control, which can cause repeated slips and thus shocks in the current and traction.

This reduces the mean traction force considerably, stresses the torque transmission device on the locomotive and causes longitudinal vibration in the train, which can lead to train breakage.

The above-mentioned drawbacks are partially eliminated by the slip regulator of the traction vehicle of the traction vehicle for adhesion limit according to the invention, which is based on the fact that the output of the axle speed difference generator is connected to the proportional regulator input. the input of a non-linear circuit whose output is connected to the input of the integral controller.

A feedback resistor connected to the output of the integral controller is also connected to the input of the integral regulator, the input of which is also connected to the output of the level generator.

The output of the integral controller is connected to the input of the axle drive controller. Preferably, the slip protection output is coupled via a derivative member to the integral controller input and the integral controller input is coupled to the vehicle speed signal generator output.

By dividing the function of the proportionally integral controller into separate proportional and integral branches, it will be possible to include a non-linear circuit at the integral controller input which causes a change in the amplification of the signal converted to the integral controller input and thus changes the integration time constant according to the rotational speed difference.

For a large slip, the controller is fast and can operate in an unstable area, while for a small slip it is slow and operates in an area of stability.

The feedback resistance of the integral controller ensures a slower exponential return when the controller returns to its original value, which limits the possibility of a further drop.

The derivative coupling between the slip protection and the integral regulator causes, after the slip protection intervention and its exponential return after slip disposal, the increase stops or only a slight integration of the integral regulator in the sense of increasing the drive axle drive current is induced.

This will quickly find the correct output level for the integral controller and increase the load drive current slowly, reducing the possibility of a further slip. The derivative coupling is made in such a way that its connection simultaneously shapes the return of the slip protection according to the depth of its intervention.

with a small hit, the return is slow, with a deep hit, the return is fast at first and then slow.

The advantage of the slip regulator according to the invention is that, in contrast to the slip protection, the vehicle and the combination not only protect the vehicle from the damaging effects of slip, but also allow automatic and stable driving using the currently maximum tractive effort without. slip. In the event of a sudden change in slip conditions, the regulator ensures the slip clearance and controls the return current so that the loss of traction is kept to a minimum, but conditions are created to continue driving to the new adhesion limit.

In addition, the regulator is able to compensate automatically by its integral action by a propellant disproportion between the desired and adhesive pulling force when driving with automatic speed control and fixed thrust limitation.

Especially under poor adhesion conditions, it greatly facilitates the driver's work and allows him to devote himself fully to track monitoring, not to deprive him of the need to monitor motor currents, slip protection, and manipulate the current controller, requiring tense attention at high speed phenomena.

The use of the chute regulator according to the invention makes it possible to better utilize the performance of the vehicle, reduces the damaging effects of the chutes on the vehicle and the combination and increases the operational reliability and safety of train running.

The attached drawing shows an exemplary embodiment of a slip regulator of the driven axle of a traction vehicle for adhesion limit driving.

The output of the axle speed difference generator 7 is connected to the slip protection input výstup, the output of which is connected to the input of the axle drive controller 10 and the input of the derivative member 4, and to the proportional regulator 1 input. 10, on the other hand to a non-linear circuit 8, the output of which is connected to the first input of the integral controller 3.

The second input of the integral controller 6 is connected via feedback resistors. with its output. The third input of the integral regulator 8 is connected to the output of the level generator 5, the fourth input of the integral regulator 3, 3 is connected to the output of the differentiator 5 and the fifth input of the integral regulator 5 is connected to the vehicle speed signal generator.

The signal from the axle speed difference generator T is applied to the input of the proportional regulator 1, which is connected to the input of the axle drive regulator 0, and to the input of the non-linear circuit 2, where.

A feedback resistor 6 is connected to the second input of the integral regulator 3 and a level generator 5 is connected to the third input of the integral regulator 5, which determines the required effective slip.

The slip protection output 2 is connected via a derivative member 6 to the fourth input of the integral regulator 3, the fifth input of which is coupled to a vehicle speed signal generator 9 which compensates the change in adhesion properties with speed and noise buildup from axle sensors due to higher speed.

If there is a slip, the axle speed difference generator T evaluates and its signal causes an immediate small reduction of the sliding axle motor current through the proportional regulator a and, if the slip is greater than the level generator £ level and the vehicle speed signal £ signal, to reduce the motor current by applying the integral controller 6 to the axle drive controller 10.

With continued slip, at a slip greater than the slip protection setting 8, slip protection 8 is triggered by a step reducing the motor current by directly acting on the axle drive controller 10.

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By reducing the slip, the slip protection '2 increases the motor current, but via the derivative member 2 it prevents the integral regulator' 2 from increasing the motor current. Only when the slip protection 2 is again ready for action does the integral regulator 3 operate, which continues to increase the motor current until the effective slip and stabilization again increases.

The circuit according to the invention can process, for example, two axle signals in the axle speed generator and, after evaluating the maximum or the sum of these signals, then transmit them to the inputs of the proportional controller 1, the non-linear circuit 6 and the slip protection 2.

Claims (3)

SUBJECT OF THE INVENTION A traction vehicle driven axle slip regulator for an adhesion limit comprising an axle speed difference generator, slip protection, a vehicle speed signal generator, a level generator, an axle drive controller and a slip regulator itself, characterized in that the output of the speed difference generator axle (7) is connected to the input of the proportional regulator (1), whose output is connected to the input of the axle drive regulator (10), and to the input of the non-linear circuit (3). (6), connected by a second outlet to the output of the integral regulator (3), whose input is also connected to the output of the level generator (5), the output of the integral regulator (3) being connected to the input of the axle drive regulator (10). Slip regulator according to claim 1, characterized in that the slip protection output (8) is connected to the input of the integral regulator (3) via a derivative member (4). Slip regulator according to claim 1, characterized in that the input of the integral regulator (3) is connected to the output of a vehicle speed signal generator (9).