High-precision control of LSRM based X–Y table for industrial applications

Pan, Jianfei; Cheung, N.C.; Zou, Yu

doi:10.1016/j.isatra.2012.08.001

Cited by 11 publications

(3 citation statements)

References 10 publications

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“…After the configuration of P, I, and D gains from the PID position regulator, the processes of parameter initialisation and sampling of force command and position output start. The control effort output is the force command of the VCM [31]. The force‐to‐current conversion module calculates the required current command for the current amplifier and then outputs the actual current to the VCM in a closed‐loop current regulation manner.…”

Section: Parameter Identification and Smc Designmentioning

confidence: 99%

Sliding‐mode position control of medium‐stroke voice coil motor based on system identification observer

Pan

Zou

et al. 2015

IET Electric Power Applications

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This study presents the performance improvement in the position control of a medium-stroke voice coil motor (VCM) using a sliding-mode controller (SMC) with a system identification observer (SIO). The proposed VCM is developed with a full stroke of 24 mm, and its non-linear electro-magneto-mechanical characteristics are analysed by the threedimensional finite element method. A least-squares-based SIO is introduced into the VCM control system prior to the position regulation of the SMC in order to achieve a shorter rise time of 29 ms and a smaller steady-state error of <±2 μm under a square-wave excitation of 20 mm amplitude and 0.5 Hz frequency. An experimental verification between the SMC and a traditional proportion-integral-differential controller is carried out. The results demonstrate improved dynamic and static tracking responses in the SMC under load-free, frequency-varying operations.

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Section: Parameter Identification and Smc Designmentioning

confidence: 99%

Sliding‐mode position control of medium‐stroke voice coil motor based on system identification observer

Pan

Zou

et al. 2015

IET Electric Power Applications

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“…Much of this work focused on the mechanism of motion/power transfer, location and extent of slip-arc, nature of frictional contact, efficiency limit of the belt-drive system, and methodology of design/selection of belt-drive components [2][3][4][5][6][7][8][9][10][11]. In [12], modeling and control of a belt-drive positioning table is discussed, and in [13], direct drive control of X-Y table is presented. However, no specific model is reported for including the effect of compliance of the belt; system identification techniques were used to obtain the system dynamics, to be later used in tuning of the feedback gains.…”

Section: Introductionmentioning

confidence: 99%

Load speed regulation in compliant mechanical transmission systems using feedback and feedforward control actions

Raul

Dwivedula²,

Pagilla

2016

ISA Transactions

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The problem of controlling the load speed of a mechanical transmission system consisting of a belt-pulley and gear-pair is considered. The system is modeled as two inertia (motor and load) connected by a compliant transmission. If the transmission is assumed to be rigid, then using either the motor or load speed feedback provides the same result. However, with transmission compliance, due to belts or long shafts, the stability characteristics and performance of the closed-loop system are quite different when either motor or load speed feedback is employed. We investigate motor and load speed feedback schemes by utilizing the singular perturbation method. We propose and discuss a control scheme that utilizes both motor and load speed feedback, and design an adaptive feedforward action to reject load torque disturbances. The control algorithms are implemented on an experimental platform that is typically used in roll-to-roll manufacturing and results are shown and discussed.

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“…These include single and multi-teethed pole configurations with either short or long flux paths [2]. That encouraged researchers to nominate switched reluctance as a candidate for almost every electric machine application [3][4][5][6][7]. Generally, switched reluctance based systems have low cost, high reliability and low maintenance requirements.…”

Section: Introductionmentioning

confidence: 99%

Correlative angles switching technique for switched reluctance motor drive systems

AbouHashesh

El-Nemr

Rashad

2015

2015 IEEE 8th GCC Conference &Amp; Exhibition

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Switched reluctance machines with its uncomplicated structure, low cost, high reliability and fault tolerance, is struggling to gain higher market share almost in all electric machinery utilities. Its simplicity encouraged researchers to apply a wide variety of classic and intelligent control techniques. These techniques are used to control the speed and torque via appropriate determination of switching-on and switching-off angles, usually associated with applying chopping in between. However, the nonlinear nature of the machine forced the utilization of sophisticated models to assist speed and torque controllers to select proper switching angles. Especially at high speeds, the uncontrolled current during freewheeling may produce negative torque and consequently torque ripples. Considerable research efforts have been performed to reduce such ripples. In this paper, a new switching technique is proposed. The technique aims to deal with the current waveform during excitation and freewheeling as a whole via correlating the switching-on, switching-off and currentend angles using simple calculations. The restrictions and limitations imposed on each switching angle to mollify operation conditions are investigated. An extensive simulated study is carried out to validate the reliability of the proposed technique. The results show the effectiveness of the proposed control method for practical high-speed applications.

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High-precision control of LSRM based X–Y table for industrial applications

Cited by 11 publications

References 10 publications

Sliding‐mode position control of medium‐stroke voice coil motor based on system identification observer

Sliding‐mode position control of medium‐stroke voice coil motor based on system identification observer

Load speed regulation in compliant mechanical transmission systems using feedback and feedforward control actions

Correlative angles switching technique for switched reluctance motor drive systems

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