System and method including a fluidic actuator and a pressurized fluid provision device

Patent metadata

Field	Value
Publication number	US-11454261-B2
Application number	US-202016829726-A
Country	US
Kind code	B2
Filing date	Mar 25, 2020
Priority date	Mar 29, 2019
Publication date	Sep 27, 2022
Grant date	Sep 27, 2022

Abstract

A system, including: a fluidic actuator which can be acted upon by a pressurized fluid and has an actuator member, a pressurized fluid provision device which is adapted to carry out a position control of the actuator member and, within the position control, to act upon the fluidic actuator with the pressurized fluid in order to move the actuator member into a prescribed position, and a hose arrangement, including at least one hose via which the fluidic actuator is fluidically connected to the pressurized fluid provision device, wherein the pressurized fluid provision device is adapted to carry out the position control taking into account a system model describing the hose arrangement, the actuator and/or the pressurized fluid provision device.

First claim

What is claimed is:

1. A system comprising:
a pneumatic actuator, which can be acted upon by pressurized air, the pneumatic actuator having an actuator member;
a pressurized fluid provision device which is adapted to carry out a position control of the actuator member and, within the position control, to apply the pressurized air to the pneumatic actuator in order to move the actuator member into a prescribed position; and
a hose arrangement comprising at least one hose via which the pneumatic actuator is fluidically connected to the pressurized fluid provision device,
wherein the pressurized fluid provision device is adapted to perform the position control taking into account a system model describing the hose arrangement, and
wherein the system model comprises a hose model with a hose parameter, wherein the hose parameter comprises a hose length, a hose diameter and/or a hose volume of the at least one hose of the hose arrangement.

2. The system according to claim 1 , wherein the system model comprises a system parameter and the system has a user interface via which the system parameter can be entered by a user into the pressurized fluid provision device.

3. The system according to claim 1 , wherein the pressurized fluid provision device comprises a frequency filter and is adapted to provide, within the position control, a command variable signal using the frequency filter, and wherein the pressurized fluid provision device is further adapted to configure the frequency filter on the basis of the system model so that a pressurized air oscillation in the hose is suppressed.

4. The system according to claim 3 , wherein the pressurized fluid provision device is adapted to detect the position of the actuator member and to configure the frequency filter on the basis of the detected position of the actuator member.

5. The system according to claim 1 , wherein the pressurized fluid provision device is adapted to calculate, on the basis of the system model, a controller parameter for the position control and to use the controller parameter for the position control.

6. The system according to claim 1 , wherein the pressurized fluid provision device is adapted to provide a command variable signal for the position control on the basis of a first controller signal and a second controller signal, wherein the pressurized fluid provision device is adapted to provide the first controller signal in accordance with an acceleration of the actuator and the second controller signal in accordance with a pressure of the actuator.

7. The system according to claim 1 , wherein the pressurized fluid provision device is adapted to provide a command variable signal for the position control on the basis of a feedforward control signal, wherein the pressurized fluid provision device is adapted to provide the feedforward control signal taking into account a hose model and/or a pressure drop in the hose.

8. The system according to claim 1 , wherein the pressurized fluid provision device is adapted to provide, within the position control, an acceleration signal representing the acceleration of the actuator member, wherein the pressurized fluid provision device is adapted to provide the acceleration signal on the basis of a twice differentiated position signal representing the position of the actuator member and on the basis of a pressure signal.

9. The system according to claim 1 , wherein the pressurized fluid provision device is adapted to detect a dynamic parameter describing the dynamic behavior of the position control, and to adapt a controller parameter on the basis of the dynamic parameter.

10. The system according to claim 1 , wherein the pressurized fluid provision device has a valve arrangement designed as a series module arrangement, which valve arrangement comprises one or more plate-shaped valve modules for supplying the pressurized fluid, the plate-shaped valve modules being arranged in a row.

11. A system comprising:
a pneumatic actuator, which can be acted upon by pressurized air, the pneumatic actuator having an actuator member;
a pressurized fluid provision device which is adapted to carry out a position control of the actuator member and, within the position control, to apply the pressurized air to the pneumatic actuator in order to move the actuator member into a prescribed position; and
a hose arrangement comprising at least one hose via which the pneumatic actuator is fluidically connected to the pressurized fluid provision device,
wherein the pressurized fluid provision device is adapted to perform the position control taking into account a system model comprising a hose model describing the hose arrangement, and
wherein the pressurized fluid provision device has a pressure sensor arrangement which is adapted to measure a pressure of the pressurized air at the pressurized fluid provision device and to provide the measured pressure as a measurement pressure, and wherein the pressurized fluid provision device is adapted to calculate a pressure of the pressurized air at the pneumatic actuator using the hose model and the measurement pressure and to provide the calculated pressure as a calculation pressure.

12. The system according to claim 11 , wherein the hose model comprises a hose parameter, wherein the hose parameter comprises a hose length, a hose diameter and/or a hose volume of the at least one hose of the hose arrangement.

13. The system according to claim 11 , wherein the pressurized fluid provision device is adapted to perform the position control using the calculation pressure.

14. A system comprising:
a fluidic actuator, which can be acted upon by a pressurized fluid, the fluidic actuator having an actuator member;
a pressurized fluid provision device which is adapted to carry out a position control of the actuator member and, within the position control, to apply the pressurized fluid to the fluidic actuator in order to move the actuator member into a prescribed position; and
a hose arrangement comprising at least one hose via which the fluidic actuator is fluidically connected to the pressurized fluid provision device,
wherein the pressurized fluid provision device is adapted to perform the position control taking into account a system model describing the hose arrangement, the actuator and/or the pressurized fluid provision device, and
wherein the pressurized fluid provision device is adapted to provide a command variable signal for the position control on the basis of a first controller signal and a second controller signal, wherein the pressurized fluid provision device is adapted to provide the first controller signal in accordance with an acceleration of the actuator and the second controller signal in accordance with a pressure of the actuator, and
wherein the pressurized fluid provision device is adapted to weight, for the provision of the command variable signal, the first controller signal and the second controller signal as a function of frequency, so that the first controller signal is dominant in a first frequency range and the second controller signal is dominant in a second frequency range, the second frequency range being higher than the first frequency range.

15. A system comprising:
a fluidic actuator, which can be acted upon by a pressurized fluid, the fluidic actuator having an actuator member;
a pressurized fluid provision device which is adapted to carry out a position control of the actuator member and, within the position control, to apply the pressurized fluid to the fluidic actuator in order to move the actuator member into a prescribed position; and
a hose arrangement comprising at l

Assignees

• Festo Se & Co Kg

Inventors

• Klassen Daniel
• Neumann Rüdiger
• Falkenhahn Valentin
• Rager David
• Gommel Gerhard

Classifications

• F15B2211/30575

  in a Wheatstone Bridge arrangement (also half bridges) · CPC title

• F15B2013/0409

  Position sensing or feedback of the valve member · CPC title

• F15B21/087 Primary

  Control strategy, e.g. with block diagram · CPC title

• F15B15/2815

  Position sensing, i.e. means for continuous measurement of position, e.g. LVDT · CPC title

• F15B2211/6309

  the pressure being a pressure source supply pressure · CPC title