Rotor Oscillation Damping of a Stepping Motor by the Method of a Simple Switching Sequence.

Taniguchi, Toshiyuki; Ohtsuka, Kei; Takasugi, Kimihiko

doi:10.1541/ieejias.111.497

Cited by 8 publications

(3 citation statements)

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“…The condition for reaching this surface is From Eqs. (11) and (13) we have Generally, for a system that has two inputs, there are two switching functions and three switching surfaces [17]: the two surfaces obtained by making the switching functions equal to zero and the eventual switching surface obtained as the intersection of the two surfaces. In this system, however, the bounding condition for the dynamics of the…”

Section: Condition For Reaching a Sliding Mode And Control Lawmentioning

confidence: 99%

Rotor Oscillation Damping of a Stepping Motor by Sliding Mode Control

Miura

Taniguchi

1997

IEEJ Trans. IA

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Stepping motors are used mainly in OA and FA systems due to the merit of their digital driving behavior using switching devices.They are driven by closed-loop control in the systems where special performance such as prevention of out of synchronism or highspeed drive is required.It is well known that rotor oscillation is one of the principal problems in switched drive of a stepping motor, and nowadays several methods for damping of oscillation in which switching sequence is changed in respective manners have been suggested. In such method, the exciting time of stator windings must be tuned appropriately, or effect of damping becomes insufficient and oscillation may be even amplified in some circumstances. To resolve this problem, some adaptive methods for tuning of the exciting time have been developed. However, they have the disadvantage that there must be a period to tune the exciting time to the optimal value at the beginning of control or when the machine parameter is varied by changing of driving condition.The authors developed a new method for rotor oscillation damping of a stepping motor in a closed-loop system. It is based on the technique of sliding mode control and designed to be robust to variation of rotor inertia which affects significantly to the oscillatory characteristic. In this method, a lower-order dynamical model, obtained by reaching to a sliding mode where the angle-torque characteristic of the motor is bound to a certain linear function, is made to be non-oscillatory by pole assignment over a certain region of varying rotor inertia. Applying this method to the experimental system, rotor oscillation is damped excellently in the cases of single-step and low-speed-multi-step drive. On the other hand, it is shown that deceleration must be needed near the last step in the case of high-speed drive.

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Section: Condition For Reaching a Sliding Mode And Control Lawmentioning

confidence: 99%

Rotor Oscillation Damping of a Stepping Motor by Sliding Mode Control

Miura

Taniguchi

1997

IEEJ Trans. IA

Self Cite

View full text Add to dashboard Cite

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“…A method, which delays the turn-off instant of the current flowing through the coil winging of one phase before switching to the next phase has been proposed for suppressing the speed fluctuation [10,11]. Another method reverses a phase of excitation damping to generate a torque in an opposite direction and breakes the speed fluctuation before the final stopping position has also been proposed [12,13].…”

Section: Introductionmentioning

confidence: 99%

Digital Control of a Stepping Motor for Eliminating Rotation Speed Fluctuations Using Adaptive Gains

et al. 2021

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Nowadays, stepping motors are usually used as precise actuators in various new scientific fields, such as syringe pumps, blood analyzers, and bio-3D printers. Controlling rotation of the stepping motor without speed fluctuation under no-load conditions plays an important role in improving the accuracy of the machine’s drive. This paper proposes a digital control method for a five-phase hybrid stepping motor. The proposed controller includes an original control loop and a PI adaptive integration gain control loop. The original digital control loop is redesigned from the analog controller by using the direct PIM method. The PI adaptive control loop is added to the original control loop in a parallel way to remove a steady deviation of the motor and suppress a physical saturation factor inside the plant. Lyapunov stability theory is used to prove a stability condition of the PI regulator gains. Experimental results show that the proposed controller can suppress the chattering caused by the switching structure and gives performances as good as that of the commercial analog controller in a high rotation speed range without fluctuation.

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“…Several methods in which the switching sequence is changed in some manner have been suggested in order to damp rotor oscillation: delayed-last-step electronic damping [5], in which the excitation of the last step is delayed for a certain period; back phasing [5,810], in which the phase for the previous step is excited again near the settling position; a method in which switching off the previous step is delayed for a certain period [11,12]; and so on. Rotor oscillation can be well damped by adoption of these methods without addition of a mechanical damper.…”

Section: Introductionmentioning

confidence: 99%

Rotor oscillation damping of a stepping motor by sliding mode control

Miura

Taniguchi

1999

Elect. Eng. Jpn.

Self Cite

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Stepping motors are used mainly in OA and FA systems due to the merits of their digital driving behavior using switching devices. They are driven by closed‐loop control in systems where special performance such as prevention of out‐of‐synchronism or a high‐speed drive is required. It is well known that rotor oscillation is one of the principal problems in the switched drive of a stepping motor, and nowadays several methods for damping this oscillation have been suggested in which the switching sequence is changed in some manner. In such methods, the excitation time of the stator windings must be tuned appropriately, or the effect of damping is insufficient and oscillation may be even amplified in some circumstances. To resolve this problem, adaptive methods for tuning of the excitation time have been developed. However, they suffer the disadvantage that they require a tuning period for the excitation time to attain the optimal value at the beginning of control or when the machine parameters are varied by changing the driving condition. The authors have developed a new method for rotor oscillation damping of a stepping motor in a closed‐loop system. It is based on a sliding mode control technique and is designed to be robust to variation of rotor inertia which significantly affects the oscillatory characteristic. In this method, a lower‐order dynamical model, obtained by reaching a sliding mode where the angle‐torque characteristic of the motor is bound to a certain linear function, is made non‐oscillatory by pole assignment over a certain region of varying rotor inertia. Applying this method to an experimental system, rotor oscillation is damped excellently in the cases of single‐step and low‐speed multi‐step drive. On the other hand, it is shown deceleration is needed near the last step in the case of a high‐speed drive. © 1998 Scripta Technica, Electr Eng Jpn, 126(1): 42–51, 1999

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Rotor Oscillation Damping of a Stepping Motor by the Method of a Simple Switching Sequence.

Cited by 8 publications

References 0 publications

Rotor Oscillation Damping of a Stepping Motor by Sliding Mode Control

Rotor Oscillation Damping of a Stepping Motor by Sliding Mode Control

Digital Control of a Stepping Motor for Eliminating Rotation Speed Fluctuations Using Adaptive Gains

Rotor oscillation damping of a stepping motor by sliding mode control

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