Non‐linear‐disturbance‐observer‐enhanced MPC for motion control systems with multiple disturbances

Yan, Yunda; Yang, Jun; Sun, Zhenxing; Li, Shihua; Yu, Haoyong

doi:10.1049/iet-cta.2018.5821

Cited by 28 publications

(15 citation statements)

References 37 publications

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“…3) 4) To select the optimal combination of voltage vectors V Copt , a cost function g 1 ( 30) is first used to pre-select three combinations of voltage vectors, i.e., V Cs 1 ,V Cs 2 , V Cs 3 , which can provide the most powerful capability on dynamic response enhancement. 5) The optimal combination of voltage vectors V Copt out of three combinations of voltage vectors is then further determined by the second cost function g 2 (33) for speed and flux control. At this step, the optimal combination of voltage vectors V Copt is saved in the register waiting to be applied to PMSM, as well as to be used to conduct system status prediction on next control period.…”

Section: Overall Control Diagrammentioning

confidence: 99%

“…Moreover, parameter variations and measurement error effects would deteriorate the control performance in a practical control system. To deal with the adverse effect of these disturbances, observers are introduced to estimate various disturbances, and an enhanced control algorithm with disturbance compensations can be developed accordingly [32], [33]. It has been proven that the employment of observers contributes to develop a robust controller [34].…”

Section: Introductionmentioning

confidence: 99%

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Dual Cost Function Model Predictive Direct Speed Control With Duty Ratio Optimization for PMSM Drives

Liu

Chan

et al. 2020

IEEE Access

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Traditional speed control of permanent magnet synchronous motors (PMSMs) includes a cascaded speed loop with proportional-integral (PI) regulators. The output of this outer speed loop, i.e. electromagnetic torque reference, is in turn fed to either the inner current controller or the direct torque controller. This cascaded control structure leads to relatively slow dynamic response, and more importantly, larger speed ripples. This paper presents a new dual cost function model predictive direct speed control (DCF-MPDSC) with duty ratio optimization for PMSM drives. By employing accurate system status prediction, optimized duty ratios between one zero voltage vector and one active voltage vector are firstly deduced based on the deadbeat criterion. Then, two separate cost functions are formulated sequentially to refine the combinations of voltage vectors, which provide two-degree-of-freedom control capability. Specifically, the first cost function results in better dynamic response, while the second one contributes to speed ripple reduction and steady-state offset elimination. The proposed control strategy has been validated by both Simulink simulation and hardware-in-the-loop (HIL) experiment. Compared to existing control methods, the proposed DCF-MPDSC can reach the speed reference rapidly with very small speed ripple and offset.INDEX TERMS Model predictive control, direct speed control, hardware-in-the-loop, permanent magnet synchronous machine.

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Section: Overall Control Diagrammentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dual Cost Function Model Predictive Direct Speed Control With Duty Ratio Optimization for PMSM Drives

Liu

Chan

et al. 2020

IEEE Access

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“…It is widely known that the proportional-integral-derivative (PID) control approach is the most widely used in the industrial field, because of its simple implementation and clear physical meaning in control engineering [1]. However, in actual applications, the PMSM servo system is unavoidably faced with various uncertainties and disturbances [2,3]. The traditional feedback control method may find it difficult to provide good tracking performance and disturbance rejection performance simultaneously [4].…”

Section: Introductionmentioning

confidence: 99%

A Look-Up Table Based Fractional Order Composite Controller Synthesis Method for the PMSM Speed Servo System

et al. 2022

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Considering the performance requirements in actual applications, a look-up table based fractional order composite control scheme for the permanent magnet synchronous motor speed servo system is proposed. Firstly, an extended state observer based compensation scheme was adopted to suppress the motor parametric uncertainties and convert the speed servo plant into a double-integrator model. Then, a fractional order proportional-derivative (PDμ) controller was adopted as the speed controller to provide the optimal step response performance for the servo system. A universal look-up table was established to estimate the derivative order of the PDμ controller, according to the optimal samples collected by an improved differential evolution algorithm. With the look-up table, the optimal PDμ controller can be tuned analytically. Simulation and experimental results show that the servo system using the composite control scheme can achieve optimal tracking performance and has robustness to the motor parametric uncertainties and disturbance torques.

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“…So developing effective control methods to achieve excellent speed control performance has gradually become a significant issue for PMSMs in the past few decades (Meng et al , 2019; Wang et al , 2019). Nowadays, a variety of advanced control strategies have been applied to PMSMs, such as sliding mode control (SMC) (Fang et al , 2020; Huang et al , 2019; Wang et al , 2017), H-infinity control (Hans and Ghosh, 2020), model predictive control (MPC) (Li et al , 2020; Wang et al , 2020; Yan et al , 2019), neural network control (NNC) (Cheng and Chen, 2020), active disturbance rejection control (ADRC) (Liu et al , 2019; Mei and Yu, 2020) and so on, which not only improve the dynamic and steady state performances of the PMSMs but also enrich the control methods of the PMSMs.…”

Section: Introductionmentioning

confidence: 99%

An enhanced sensorless control based on active disturbance rejection controller for a PMSM system: design and hardware implementation

Bao

et al. 2022

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Purpose This paper mainly aims to deal with the problems of uncertainties including modelling errors, unknown dynamics and disturbances caused by load mutation in control of permanent magnet synchronous motor (PMSM). Design/methodology/approach This paper proposes an enhanced speed sensorless vector control method based on an active disturbance rejection controller (ADRC) for a PMSM. First, a state space model of the PMSM is obtained for the field orientation control strategy. Second, a sliding mode observer (SMO) based on back electromotive force (EMF) is introduced to replace the encode to estimate the rotor flux position angle and speed. Third, an infinite impulse response (IIR) filter is introduced to eliminate high frequency noise mixed in the output of the sliding mode observer. In addition, a speed control method based on an extended state observer (ESO) is proposed to estimate and compensate for the total disturbances. Finally, an experimental set-up is built to verify the effectiveness and superiority of the proposed ADRC-based control method. Findings The comparative experimental results show that the proposed speed sensorless control method with the IIR filter can achieve excellent robustness and speed tracking performance for PMSM system. Research limitations/implications An enhanced sensorless control method based on active disturbance rejection controller is designed to realize high precision control of the PMSM; the IIR filter is used to attenuate the chattering problem of traditional SMO; this method simplifies the system and saves the total cost due to the speed sensorless technology. Practical implications The use of sensorless can reduce costs and be more beneficial to actual industrial application. Originality/value The proposed enhanced speed sensorless vector control method based on an ADRC with the IIR filter enriches the control method of PMSM. It can ameliorate system robustness and achieve excellent speed tracking performance.

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Non‐linear‐disturbance‐observer‐enhanced MPC for motion control systems with multiple disturbances

Cited by 28 publications

References 37 publications

Dual Cost Function Model Predictive Direct Speed Control With Duty Ratio Optimization for PMSM Drives

Dual Cost Function Model Predictive Direct Speed Control With Duty Ratio Optimization for PMSM Drives

A Look-Up Table Based Fractional Order Composite Controller Synthesis Method for the PMSM Speed Servo System

An enhanced sensorless control based on active disturbance rejection controller for a PMSM system: design and hardware implementation

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