Displacement Tracking Control for Continuous Casting Mold Driven by Servo Motor Based on Composite Control Strategy

Ma, Zhongshui; Fang, Yiming; Li, Jianxiong; Liu, Le; Li, Qiang

doi:10.2355/isijinternational.isijint-2019-342

Cited by 7 publications

(3 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The closed-loop control block diagram of PMSM can be exhibited in Figure 7. The dynamic mathematical model of PMSM under general assumptions can be arranged as 31…”

Section: Case Study On DC Motormentioning

confidence: 99%

Remaining useful life prediction for motor systems by iteratively updated wiener process based on closed-loop performance degradation monitoring

Wu,

Yang,

Huang

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part I:

View full text Add to dashboard Cite

Driven by the need for remaining useful life prediction of degraded motor systems with feedback controllers, a real-time updated Wiener stochastic process is adopted to model the performance degradation of motor systems. First, a closed-loop performance index of the motor system is derived incorporating the multiple slow time-varying characteristic of motor parameters. On this basis, the drift coefficient and diffusion coefficient of the Wiener degradation model are updated to obtain the prior maximum likelihood function with available historical data. It is followed by the iterative optimization of nonlinear feature parameter in the Wiener degradation model with taking the prior maximum likelihood function as the cost equation. The effectiveness of proposed remaining useful life prediction architecture for closed-loop motor systems is demonstrated by motor systems.

show abstract

“…The closed-loop control block diagram of PMSM can be exhibited in Figure 7. The dynamic mathematical model of PMSM under general assumptions can be arranged as 31…”

Section: Case Study On DC Motormentioning

confidence: 99%

Remaining useful life prediction for motor systems by iteratively updated wiener process based on closed-loop performance degradation monitoring

Wu,

Yang,

Huang

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part I:

View full text Add to dashboard Cite

show abstract

“…The non-sinusoidal vibration control system of the CCM driven by the servo motor is a new driving mode [3], which is realized by the one-direction and variable speed rotation of the servo motor that can effectively avoid the frequent start and stop of the forward and reverse rotation of the servo motor. It has some advantages of energy saving, consumption reduction, compact structure and easy maintenance [4], etc. However, there is a nonlinear periodic function ,i.e., sinusoidal function, between the vibration displacement of the mold and the angular displacement of the eccentric shaft in the forward channel of the CCM system.…”

Section: Introductionmentioning

confidence: 99%

Adaptive High-order Sliding Mode Control for Vibration Displacement System of Continuous Casting Mold

Yuan

Zhou³

2023

Preprint

Self Cite

View full text Add to dashboard Cite

To solve the non-unique problem of inverse solutions of nonlinear periodic function and the uncertainties in the transmission mechanism of vibration displacement system of continuous casting mold driven by servo motor, an adaptive high-order sliding mode control(HOSMC) strategy based on nonlinear processing method is proposed. Firstly, a new nonlinear processing method is utilized to solve the problem that the output equation of the system has the non-unique problem of inverse solutions of a nonlinear periodic function, which is convenient for the controller design of displacement loop. Secondly, an adaptive HOSMC controller is proposed to suppress the uncertainties including the initial zero position deviation of the eccentric shaft, parameter perturbation, and fast time-varying load disturbance, and track the desired displacement accurately in the displacement loop system, and it is proved that the displacement tracking error is stable and convergent to the near origin in finite time. Finally, the simulation and experimental researches are all verified that the proposed control method is superior to the PI control method in the field and has better dynamic and steady-state tracking performance.

show abstract

“…Thus, non-sinusoidal oscillation is regarded as the best oscillation mode. [1][2][3][4][5] The core of the non-sinusoidal oscillation is the waveform function, which have two types of entirety and section. Suzuki 6) and Kang et al 7) proposed the entirety oscillation waveforms, which were composed of the sine functions.…”

Section: Introductionmentioning

confidence: 99%

Experiment and Conformation of Non-sinusoidal Oscillation Waveform Function for Continuous Casting Mold

Zhou,

Ye,

Cao

et al. 2023

ISIJ Int.

View full text Add to dashboard Cite

Mold oscillation is a key technology of steel continuous casting. Sinusoidal oscillation and non-sinusoidal oscillation are widely used in actual production. Non-sinusoidal oscillation has many advantages compared with the sinusoidal oscillation, such as it can reduce the depth of oscillation mark, and make slab demoulding easily. But the maximum acceleration of non-sinusoidal oscillation is higher, which will result in the larger inertia force, influence on the service life and running smoothly of the oscillator. The modification ratio of the non-sinusoidal oscillation is bigger, the impact and noise of the oscillator are more serious especially when the mold arrives at the top and bottom position. To control the maximum acceleration of the non-sinusoidal oscillation waveform, a novel waveform function with three sections was proposed. And the displacement, velocity and acceleration curves were continuous and smooth, which had no rigid and flexible impact. Thus, it had good dynamic characteristics and realized the switching between the sinusoidal and the non-sinusoidal oscillation. Then the proposed oscillation waveform function was realized by a mechanical oscillator with double servomotors arranged symmetry. Meanwhile, the angular speed of the servomotor to realize the oscillation waveform was presented and the tested curves were obtained by the experiment. The experiment results show that the oscillation waveform can be realized well, the vertical maximum acceleration of the proposed function is reduced by 13.6%, which is helpful to reduce the inertia force, enhance the motion stability and prolong the service life of the oscillator.

show abstract

Displacement Tracking Control for Continuous Casting Mold Driven by Servo Motor Based on Composite Control Strategy

Cited by 7 publications

References 19 publications

Remaining useful life prediction for motor systems by iteratively updated wiener process based on closed-loop performance degradation monitoring

Remaining useful life prediction for motor systems by iteratively updated wiener process based on closed-loop performance degradation monitoring

Adaptive High-order Sliding Mode Control for Vibration Displacement System of Continuous Casting Mold

Experiment and Conformation of Non-sinusoidal Oscillation Waveform Function for Continuous Casting Mold

Contact Info

Product

Resources

About