Method and device for determining position of piston or wheel

By triggering a limited system stimulus in the pneumatic drive and clamping system, detecting the system response, and combining a single-turn magnetic field sensor signal, using parameter data sets to determine the position of the piston or wheel, the problem of inaccurate position determination in the prior art is solved, and a high-precision and low-cost position determination method is realized.

CN119712658APending Publication Date: 2025-03-28FESTO AG & CO KG
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Patent Information

Application Number
CN202411172050.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-09-27
Filing Date
2024-08-26
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The prior art is difficult to accurately determine the position of the piston or wheel in pneumatic drive and clamping systems, especially in the absence of reference transfer after power outage or system restart, resulting in inaccurate position determination or requiring complex and expensive sensor systems.

Method used

By triggering a defined system stimulus for the pneumatic drive and clamping system, the system response is detected, and combined with the wheel rotation angle signal detected by the single-turn magnetic field sensor, the system response is assigned to the unique rotation angle signal using the parameter data set, thereby determining the exact position of the piston or wheel through position calculation countermeasures.

Benefits of technology

It realizes precise determination of the position of the piston or wheel without reference transfer after power outage or system restart, reducing system complexity and cost, and improving the accuracy and reliability of position determination.

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Abstract

The present disclosure relates to a method and apparatus for determining a piston or wheel position in a pneumatic drive and / or clamping system that includes a wheel / piston arrangement having a wheel and a piston coupled to the wheel. The method for determining a piston or wheel position in a pneumatic drive and / or gripping system may have a number of steps. In a first step, a defined system stimulus of the pneumatic drive and / or clamping system is triggered. In a further step, a system response of the pneumatic drive and / or gripping system is detected as a response to the defined system stimulus. Further, a parameter data set is received. Furthermore, the piston or wheel position is determined by performing a position calculation policy based on the detected system response using the received parameter data set, and comparison with a periodic, non-unique rotation angle signal.
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