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1. (WO2019067291) METHOD AND APPARATUS FOR CONTROLLING A DOUBLE-ACTING PNEUMATIC ACTUATOR
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Pub. No.: WO/2019/067291 International Application No.: PCT/US2018/051837
Publication Date: 04.04.2019 International Filing Date: 20.09.2018
IPC:
F15B 11/042 (2006.01) ,F15B 11/044 (2006.01) ,F15B 15/28 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
11
Servomotor systems without provision for follow-up action
02
Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member
04
for controlling the speed
042
by regulating means in feed line
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
11
Servomotor systems without provision for follow-up action
02
Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member
04
for controlling the speed
044
by regulating means in return line
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
15
Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
20
Other details
28
Means for indicating the position, e.g. end of stroke
Applicants:
FISHER CONTROLS INTERNATIONAL LLC [US/US]; 205 S. Center Street Marshalltown, IA 50158, US
Inventors:
METSCHKE, Christopher, S.; US
FONTAINE, Michael, R.; US
JUNK, Kenneth, W.; US
SMID, David, L.; US
Agent:
READ, David, C.; US
Priority Data:
62/565,92929.09.2017US
Title (EN) METHOD AND APPARATUS FOR CONTROLLING A DOUBLE-ACTING PNEUMATIC ACTUATOR
(FR) PROCÉDÉ ET APPAREIL DE COMMANDE D'UN ACTIONNEUR PNEUMATIQUE A DOUBLE EFFET
Abstract:
(EN) A control loop for a double-acting pneumatic actuator is configured to generate two control signals, one for each of the two pneumatic chambers for the purpose of controlling the actuator position in view of operating constraints on the chamber pressures or the stiffness of the actuator. A numerical indicator of the stiffness may be computed in a variety of ways, for example, as the average of the two chamber pressures. In one embodiment a numerical indicator of stiffness is treated as an output of the system along with the position of the actuator. A multi- input multi-output control loop with position and pressure feedback may be used to simultaneously control the position and the stiffness of the actuator.
(FR) Une boucle de commande d'un actionneur pneumatique à double effet est conçue pour générer deux signaux de commande, l'un pour chacune des deux chambres pneumatiques dans le but de commander la position de l'actionneur au vu de contraintes de fonctionnement sur les pressions dans les chambres ou la rigidité de l'actionneur. Un indicateur numérique de la rigidité peut être calculé de diverses manières, par exemple, comme la moyenne des pressions dans les deux chambres. Dans un mode de réalisation, un indicateur numérique de rigidité est traité en tant que sortie du système conjointement avec la position de l'actionneur. Une boucle de commande à entrées multiples et sorties multiples avec rétroaction de position et de pression peut être utilisée pour commander simultanément la position et la rigidité de l'actionneur.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)