Diagnostic apparatus, system and method

1. A diagnostic apparatus for a fluidic actuator, which has an actuator element displaceable into different positions (x 1 , x 2 , xp 1 , xp 2 ), wherein the diagnostic apparatus is configured to:

provide, for a first position (x 1 ) of the actuator element, a first break-away pressure measured value (pi 1 ); and

determine, based on the first break-away pressure measured value (pi 1 ) and break-away pressure reference information (pri) stored in the diagnostic apparatus, a first break-away pressure prediction value (pp 1 ) for a first prediction position (xp 1 ) of the actuator element, the first prediction position (xp 1 ) being different from the first position (x 1 ).

2. The diagnostic apparatus according to claim 1 , wherein the first position (x 1 ) is a current and/or actually adopted position of the actuator element and/or the first prediction position (xp 1 ) is not a current and/or not an actually adopted position of the actuator element.

3. The diagnostic apparatus according to claim 1 , wherein the first prediction position (xp 1 ) is a first end position of the actuator element.

4. The diagnostic apparatus according to claim 1 , wherein the diagnostic apparatus is configured to perform the determination of the first break-away pressure prediction value (pp 1 ) according to a movement direction of the actuator element.

5. The diagnostic apparatus according to claim 1 , wherein the break-away pressure reference information (pri) comprises a first break-away pressure characteristic line (dk 1 ) for a first movement direction of the actuator element and/or a second break-away pressure characteristic line (dk 2 ) for a second movement direction of the actuator element.

6. The diagnostic apparatus according to claim 5 , wherein the first prediction position (xp 1 ) is a position in which the first break-away pressure characteristic line (dk 1 ) has a maximum or a minimum.

7. The diagnostic apparatus according to claim 1 , wherein the diagnostic apparatus is further configured to:

provide, for a second position (x 2 ) of the actuator element, a second break-away pressure measured value (pi 2 ); and

determine, based on the second break-away pressure measured value (pi 2 ) and the break-away pressure reference information (pri), a second break-away pressure prediction value (pp 2 ) for a second prediction position (xp 2 ), the second prediction position (xp 2 ) being different from the second position (x 2 ).

8. The diagnostic apparatus according to claim 7 , wherein the diagnostic apparatus is configured to determine the first break-away pressure prediction value (pp 1 ) for a first movement direction of the actuator element and the second break-away pressure prediction value (pp 2 ) for a second movement direction of the actuator element different from the first movement direction.

9. The diagnostic apparatus according to claim 1 , wherein the diagnostic apparatus is configured to check whether the first break-away pressure prediction value (pp 1 ) is within a pressure range available for the actuation of the fluidic actuator.

10. The diagnostic apparatus according to claim 1 , wherein the diagnostic apparatus is configured to provide the first break-away pressure prediction value normalized in relation to a maximum working pressure that can be provided and/or a maximum available pressure range that can be provided.

11. The diagnostic apparatus according to claim 1 , wherein the diagnostic apparatus is configured to compare the first break-away pressure prediction value to a threshold value and to provide, based on the comparison, warning information.

12. The diagnostic apparatus according to claim 1 , wherein the diagnostic apparatus is configured to provide the first break-away pressure prediction value on a user interface on an external server.

13. A system, comprising a diagnostic apparatus according to claim 1 and a fluidic actuator with an actuator element.

14. The system according to claim 13 , further comprising a control apparatus, and an external server, which is configured to provide the first break-away pressure prediction value (pp 1 ) and/or information based on the first break-away pressure prediction value (pp 1 ).

15. A method for diagnosing a fluidic actuator, the method comprising:

providing, (S 1 ), a first break-away pressure measured value (pi 1 ) for a first position (x 1 ) of an actuator element of the fluidic actuator, and

determining, (S 2 ), based on the first break-away pressure measured value (pi 1 ) and break-away pressure reference information (pri), a first break-away pressure prediction value (pp 1 ) for a first prediction position (xp 1 ) of the actuator element, the first prediction position (xp 1 ) being different from the first position (x 1 ), and

providing, based on the first break-away pressure prediction value, wear information and/or information on a remaining service life of the fluid actuator.

16. A diagnostic apparatus for a fluidic actuator, which has an actuator element displaceable into different positions (x 1 , x 2 , xp 1 , xp 2 ), wherein the diagnostic apparatus is configured to:

provide, for a first position (x 1 ) of the actuator element, a first break-away pressure measured value (pi 1 );

determine, based on the first break-away pressure measured value (pi 1 ) and break-away pressure reference information (pri) stored in the diagnostic apparatus, a first break-away pressure prediction value (pp 1 ) for a first prediction position (xp 1 ) of the actuator element, the first prediction position (xp 1 ) being different from the first position (x 1 );

provide, for a second position (x 2 ) of the actuator element, a second break-away pressure measured value (pi 2 ); and

determine, based on the second break-away pressure measured value (pi 2 ) and the break-away pressure reference information (pri), a second break-away pressure prediction value (pp 2 ) for a second prediction position (xp 2 ), the second prediction position (xp 2 ) being different from the second position (x 2 ),

wherein the diagnostic apparatus is configured to subject the first break-away pressure prediction value (pp 1 ) and/or the second break-away pressure prediction value (pp 2 ) to a transformation such that the first break-away pressure prediction value and the second break-away prediction value are moved in the same direction with increasing stiffness of the actuator element.

17. The diagnostic apparatus according to claim 16 , wherein the diagnostic apparatus is configured to perform the transformation of the first break-away pressure prediction value and/or the second break-away pressure prediction value in dependence on the movement direction of the actuator element associated with the first break-away pressure prediction value and/or the second break-away pressure prediction value and/or in dependence on whether the first break-away pressure prediction value and/or the second break-away pressure prediction value constitutes an upper limit value or a lower limit value.