Step-out detection and error compensation for a micro-stepper motor using current feedback

Moon, Sungwook; Kim, Dong Hwan

doi:10.1016/j.mechatronics.2014.02.012

Cited by 11 publications

(9 citation statements)

References 5 publications

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“…3) The introduction of the phase-lead controller defined in (18) enlarges such speed threshold. Outside this range, the proposed controller works with a fixed resonant and therefore equivalently as the PI.…”

Section: Ri and Pi Tuning And Discussionmentioning

confidence: 99%

“…As commonly done, the use of the phase-lead controller given in (18) has found to be of great help to enlarge all stability margins and therefore it has been added.…”

Section: B Proposed Resonant Integral (Ri) Controllermentioning

confidence: 99%

“…PMHSMs most relevant feature is the capability of performing accurate position control without the use of any electromechanical feedback sensor by means of the wellknown micro-stepping technique [15]- [17]. However, such open-loop positioning technique suffers from two important inconveniences, which are, the always threatening loss of steps [18], [19] with the consequent position error, and the use of maximum current [20], which implies poor efficiency, as well as extra heating. Both of the previous inconveniences are skipped by using vector control (knwon also as Field Oriented Control) with an encoder or resolver feedback, similarly as other servo applications [21], [22].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Reducing the Cogging Torque Effects in Hybrid Stepper Machines by Means of Resonant Controllers

Arias

Caum

Ibarra

et al. 2019

IEEE Trans. Ind. Electron.

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Section: Ri and Pi Tuning And Discussionmentioning

confidence: 99%

“…As commonly done, the use of the phase-lead controller given in (18) has found to be of great help to enlarge all stability margins and therefore it has been added.…”

Section: B Proposed Resonant Integral (Ri) Controllermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Reducing the Cogging Torque Effects in Hybrid Stepper Machines by Means of Resonant Controllers

Arias

Caum

Ibarra

et al. 2019

IEEE Trans. Ind. Electron.

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show abstract

“…This monitoring technique improves the limitation of ripple failure detections by adding a phase failure detection system using wavelet transform. Electric current signal measurement was also applied for step-out error detection [24], accelerated screening test for infant mortality product [21], motor's parameter identification [25] and control [11,26,27]. Although the electric current monitoring has been demonstrated as one of the solutions which has been proposed in magnetized coil-based CRDM, but has not been investigated for the stepper based CRDM specifically in the HTGR plants.…”

Section: Condition Monitoring Of Crdmmentioning

confidence: 99%

An Online Non-Invasive Condition Monitoring Method for Stepping Motor CRDM in HTGR

Bakhri

Ertugrul

2016

Atom Indo.

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Control Rod Drive Mechanism (CRDM) based on stepping motor is one of the components applied in High Temperature Gas Coold Reactor (HTGR) to control the reactivity as well as to maintain the safety of reactor. The stepping motor requires a unique condition monitoring to avoid any failures especially due to the specific environments of CRDM in HTGR such as the allowable of high temperature, high radiation and the location of stepper motor inside a pressure shell. This research aims to demonstrate an online non-invasive condition monitoring method without direct access to the CRDM of HTGR based on voltage and stator current measurements. A simple stepping motor CRDM simulator is employed. The online condition monitoring is carried out by direct pattern matching of the output signals of logic generator block and the output signals of motor driver. The online method utilizes signature patterns of voltage and stator current signals of the healthy motor as a baseline for healthy motor. In addition, the method is applied to detect highresistance problem on the connector between the motor driver block and the stepper motor to show the effectiveness and the applicability of this method. The online condition monitoring system demonstrates a capability to identify a minimum detectable simulated high-resistance for about 2.9% which decreases the measured stator current and motor's torque for around 5.1% and 3.3%, respectively. The paper also points out signatures of healthy motor, including mutual inductions of the motor's winding in voltage and current measurement which can be used as the fault symptom indicators for online monitoring purposes.

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“…Such stepping open-loop position control is reliable as long as the machine does not lose synchronisation and does not miss any step. Research efforts are driven in [10] and [11] to detect step-outs and compensate for them to keep the accuracy in the position control. Also, more traditional sensorless control approaches have been carried out based on extended Kalman filters [12,13] and passive nonlinear [14][15][16] as well as disturbance [17] observers.…”

Section: Introductionmentioning

confidence: 99%

Moving towards the maximum speed in stepping motors by means of enlarging the bandwidth of the current controller

2016

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This paper pursues to maximise the mechanical speed when using stepping motors (SM) without position sensors in order to achieve a rapid-response manufacturing whenever any equipment based on such electrical machines is involved. The novelty of this paper is the fact that not only the bandwidth of the current controllers is improved for such maximization of the SM mechanical speed, as traditionally done in previous works, but also a comprehensive approach has been addressed. Such global approach starts justifying why the traditional PI controller is not sufficient and it includes the analytical tuning of the current controllers, considering implementation tiny issues (but of paramount importance) such as the delays caused by the processor and the sample and hold current measurements. It is proved and justified that this previously mentioned issues, which are often omitted, play a crucial role when trying to maximise the speed of the SM, since the electrical fundamental frequencies of the SM move close to the sampling frequency. Therefore, the analytical process to tune and implement the current controllers will have to be done in discrete-time domain, i.e. using the Z transform and treating the SM drive as a sampled data system. Experimental waveforms and results based on real prototypes will prove the validity of the entire research. Finally, a real case-study based on Printed Circuit Board (PCB) prototyping machine which is composed by two stepper machines, is fully reported. Such PCB prototype is the fruitful collaboration between the University (research institution) and a private company (industry). © 2016 Elsevier LtdPeer ReviewedPostprint (author's final draft

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Step-out detection and error compensation for a micro-stepper motor using current feedback

Cited by 11 publications

References 5 publications

Reducing the Cogging Torque Effects in Hybrid Stepper Machines by Means of Resonant Controllers

Reducing the Cogging Torque Effects in Hybrid Stepper Machines by Means of Resonant Controllers

An Online Non-Invasive Condition Monitoring Method for Stepping Motor CRDM in HTGR

Moving towards the maximum speed in stepping motors by means of enlarging the bandwidth of the current controller

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