(19)
(11)EP 3 139 491 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
05.04.2017 Bulletin 2017/14

(43)Date of publication A2:
08.03.2017 Bulletin 2017/10

(21)Application number: 16186558.9

(22)Date of filing:  31.08.2016
(51)International Patent Classification (IPC): 
H02P 23/00(2016.01)
(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
MA MD

(30)Priority: 01.09.2015 US 201514842538

(71)Applicant: Rockwell Automation Technologies, Inc.
Mayfield Heights, OH 44124 (US)

(72)Inventors:
  • MIKLOSOVIC, Robert
    Chardon, OH Ohio 44024 (US)
  • FAST, Brian
    Kirtland, OH Ohio 44094 (US)
  • CHAFFEE, Mark
    Chagrin Falls, OH Ohio 44022 (US)

(74)Representative: Grünecker Patent- und Rechtsanwälte PartG mbB 
Leopoldstraße 4
80802 München
80802 München (DE)

  


(54)SYSTEM AND METHOD FOR IMPROVED MOTOR DRIVE TUNING


(57) An improved system for controlling operation of a motor with a motor drive is disclosed. The motor drive includes a control module having an inner control loop operable to generate a torque reference signal and a load observer operable to generate an estimate of the torque present on the motor. The torque estimate is summed with the torque reference signal to generate a modified torque reference. The bandwidth of the load observer is set wide enough to generate the estimated torque over a desired operating range of the motor. The control module may also include a low pass filter and at least one tracking notch filter. The low pass filter suppresses vibrations at high frequencies, and the tracking notch filter suppresses resonances present at frequencies above the bandwidth of the load observer and within the pass band of the low pass flter.







Search report









Search report