Toolkit/non-linear disturbance observer

non-linear disturbance observer

Engineering Method·Research·Since 2012

Also known as: NDO

Taxonomy: Technique Branch / Method. Workflows sit above the mechanism and technique branches rather than replacing them.

Summary

A non-linear disturbance observer (NDO) is an engineering control method used within a feedback linearisation framework to estimate lumped uncertainty. In the cited in-wheel motor drive study, it was implemented as part of a DSP-based intelligent control system for a six-phase permanent magnet synchronous motor.

Usefulness & Problems

Why this is useful

This method is useful for control architectures that require online estimation of aggregated model uncertainty or external disturbance terms during feedback linearisation. The supplied evidence supports utility in an in-wheel motor drive context, but does not provide broader biological or biochemical applications.

Source:

Moreover, a non-linear disturbance observer (NDO) is applied to estimate the lumped uncertainty for the designed feedback linearisation control.

Problem solved

The specific problem addressed is estimation of lumped uncertainty in a designed feedback linearisation controller. The cited study applies this to an in-wheel motor drive for a light electric vehicle.

Taxonomy & Function

Primary hierarchy

Technique Branch

Method: A concrete method used to build, optimize, or evolve an engineered system.

Target processes

degradation

Implementation Constraints

The reported implementation used a 32-bit fixed-point DSP, specifically the TMS320F2812, to run the proposed control system. The available evidence does not specify parameterisation details, observer equations, or any biological implementation considerations.

The supplied evidence states that observer error degrades system response. No quantitative performance metrics, robustness bounds, or validation outside the reported motor-drive application are provided in the evidence.

Validation

Cell-freeBacteriaMammalianMouseHumanTherapeuticIndep. Replication

Supporting Sources

Ranked Claims

Claim 1functionsupports2012Source 1needs review

A non-linear disturbance observer is applied to estimate lumped uncertainty for the designed feedback linearisation control.

Moreover, a non-linear disturbance observer (NDO) is applied to estimate the lumped uncertainty for the designed feedback linearisation control.
Claim 2functionsupports2012Source 1needs review

A non-linear disturbance observer is applied to estimate lumped uncertainty for the designed feedback linearisation control.

Moreover, a non-linear disturbance observer (NDO) is applied to estimate the lumped uncertainty for the designed feedback linearisation control.
Claim 3functionsupports2012Source 1needs review

A non-linear disturbance observer is applied to estimate lumped uncertainty for the designed feedback linearisation control.

Moreover, a non-linear disturbance observer (NDO) is applied to estimate the lumped uncertainty for the designed feedback linearisation control.
Claim 4functionsupports2012Source 1needs review

A non-linear disturbance observer is applied to estimate lumped uncertainty for the designed feedback linearisation control.

Moreover, a non-linear disturbance observer (NDO) is applied to estimate the lumped uncertainty for the designed feedback linearisation control.
Claim 5functionsupports2012Source 1needs review

A non-linear disturbance observer is applied to estimate lumped uncertainty for the designed feedback linearisation control.

Moreover, a non-linear disturbance observer (NDO) is applied to estimate the lumped uncertainty for the designed feedback linearisation control.
Claim 6functionsupports2012Source 1needs review

A non-linear disturbance observer is applied to estimate lumped uncertainty for the designed feedback linearisation control.

Moreover, a non-linear disturbance observer (NDO) is applied to estimate the lumped uncertainty for the designed feedback linearisation control.
Claim 7functionsupports2012Source 1needs review

A non-linear disturbance observer is applied to estimate lumped uncertainty for the designed feedback linearisation control.

Moreover, a non-linear disturbance observer (NDO) is applied to estimate the lumped uncertainty for the designed feedback linearisation control.
Claim 8implementationsupports2012Source 1needs review

A 32-bit fixed-point DSP TMS320F2812 is adopted to implement the proposed intelligent controlled drive system.

Moreover, a 32-bit fixed-point DSP, TMS320F2812, is adopted for the implementation of the proposed intelligent controlled drive system.
Claim 9implementationsupports2012Source 1needs review

A 32-bit fixed-point DSP TMS320F2812 is adopted to implement the proposed intelligent controlled drive system.

Moreover, a 32-bit fixed-point DSP, TMS320F2812, is adopted for the implementation of the proposed intelligent controlled drive system.
Claim 10implementationsupports2012Source 1needs review

A 32-bit fixed-point DSP TMS320F2812 is adopted to implement the proposed intelligent controlled drive system.

Moreover, a 32-bit fixed-point DSP, TMS320F2812, is adopted for the implementation of the proposed intelligent controlled drive system.
Claim 11implementationsupports2012Source 1needs review

A 32-bit fixed-point DSP TMS320F2812 is adopted to implement the proposed intelligent controlled drive system.

Moreover, a 32-bit fixed-point DSP, TMS320F2812, is adopted for the implementation of the proposed intelligent controlled drive system.
Claim 12implementationsupports2012Source 1needs review

A 32-bit fixed-point DSP TMS320F2812 is adopted to implement the proposed intelligent controlled drive system.

Moreover, a 32-bit fixed-point DSP, TMS320F2812, is adopted for the implementation of the proposed intelligent controlled drive system.
Claim 13implementationsupports2012Source 1needs review

A 32-bit fixed-point DSP TMS320F2812 is adopted to implement the proposed intelligent controlled drive system.

Moreover, a 32-bit fixed-point DSP, TMS320F2812, is adopted for the implementation of the proposed intelligent controlled drive system.
Claim 14implementationsupports2012Source 1needs review

A 32-bit fixed-point DSP TMS320F2812 is adopted to implement the proposed intelligent controlled drive system.

Moreover, a 32-bit fixed-point DSP, TMS320F2812, is adopted for the implementation of the proposed intelligent controlled drive system.
Claim 15limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 16limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 17limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 18limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 19limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 20limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 21limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 22proposalsupports2012Source 1needs review

The study proposes a DSP-based probabilistic fuzzy neural network control for controlling an in-wheel motor drive using a six-phase permanent magnet synchronous motor for a light electric vehicle.

A digital signal processor (DSP)-based probabilistic fuzzy neural network (PFNN) control is proposed in this study to control an in-wheel motor drive using a six-phase permanent magnet synchronous motor (PMSM) for light electric vehicle (LEV).
Claim 23proposalsupports2012Source 1needs review

The study proposes a DSP-based probabilistic fuzzy neural network control for controlling an in-wheel motor drive using a six-phase permanent magnet synchronous motor for a light electric vehicle.

A digital signal processor (DSP)-based probabilistic fuzzy neural network (PFNN) control is proposed in this study to control an in-wheel motor drive using a six-phase permanent magnet synchronous motor (PMSM) for light electric vehicle (LEV).
Claim 24proposalsupports2012Source 1needs review

The study proposes a DSP-based probabilistic fuzzy neural network control for controlling an in-wheel motor drive using a six-phase permanent magnet synchronous motor for a light electric vehicle.

A digital signal processor (DSP)-based probabilistic fuzzy neural network (PFNN) control is proposed in this study to control an in-wheel motor drive using a six-phase permanent magnet synchronous motor (PMSM) for light electric vehicle (LEV).
Claim 25proposalsupports2012Source 1needs review

The study proposes a DSP-based probabilistic fuzzy neural network control for controlling an in-wheel motor drive using a six-phase permanent magnet synchronous motor for a light electric vehicle.

A digital signal processor (DSP)-based probabilistic fuzzy neural network (PFNN) control is proposed in this study to control an in-wheel motor drive using a six-phase permanent magnet synchronous motor (PMSM) for light electric vehicle (LEV).
Claim 26proposalsupports2012Source 1needs review

The study proposes a DSP-based probabilistic fuzzy neural network control for controlling an in-wheel motor drive using a six-phase permanent magnet synchronous motor for a light electric vehicle.

A digital signal processor (DSP)-based probabilistic fuzzy neural network (PFNN) control is proposed in this study to control an in-wheel motor drive using a six-phase permanent magnet synchronous motor (PMSM) for light electric vehicle (LEV).
Claim 27proposalsupports2012Source 1needs review

The study proposes a DSP-based probabilistic fuzzy neural network control for controlling an in-wheel motor drive using a six-phase permanent magnet synchronous motor for a light electric vehicle.

A digital signal processor (DSP)-based probabilistic fuzzy neural network (PFNN) control is proposed in this study to control an in-wheel motor drive using a six-phase permanent magnet synchronous motor (PMSM) for light electric vehicle (LEV).
Claim 28proposalsupports2012Source 1needs review

The study proposes a DSP-based probabilistic fuzzy neural network control for controlling an in-wheel motor drive using a six-phase permanent magnet synchronous motor for a light electric vehicle.

A digital signal processor (DSP)-based probabilistic fuzzy neural network (PFNN) control is proposed in this study to control an in-wheel motor drive using a six-phase permanent magnet synchronous motor (PMSM) for light electric vehicle (LEV).
Claim 29validity statementsupports2012Source 1needs review

Experimental results are presented to show the validity of the proposed PFNN control for the in-wheel motor drive system.

Finally, some experimental results are illustrated to show the validity of the proposed PFNN control for in-wheel motor drive system.
Claim 30validity statementsupports2012Source 1needs review

Experimental results are presented to show the validity of the proposed PFNN control for the in-wheel motor drive system.

Finally, some experimental results are illustrated to show the validity of the proposed PFNN control for in-wheel motor drive system.
Claim 31validity statementsupports2012Source 1needs review

Experimental results are presented to show the validity of the proposed PFNN control for the in-wheel motor drive system.

Finally, some experimental results are illustrated to show the validity of the proposed PFNN control for in-wheel motor drive system.
Claim 32validity statementsupports2012Source 1needs review

Experimental results are presented to show the validity of the proposed PFNN control for the in-wheel motor drive system.

Finally, some experimental results are illustrated to show the validity of the proposed PFNN control for in-wheel motor drive system.
Claim 33validity statementsupports2012Source 1needs review

Experimental results are presented to show the validity of the proposed PFNN control for the in-wheel motor drive system.

Finally, some experimental results are illustrated to show the validity of the proposed PFNN control for in-wheel motor drive system.
Claim 34validity statementsupports2012Source 1needs review

Experimental results are presented to show the validity of the proposed PFNN control for the in-wheel motor drive system.

Finally, some experimental results are illustrated to show the validity of the proposed PFNN control for in-wheel motor drive system.
Claim 35validity statementsupports2012Source 1needs review

Experimental results are presented to show the validity of the proposed PFNN control for the in-wheel motor drive system.

Finally, some experimental results are illustrated to show the validity of the proposed PFNN control for in-wheel motor drive system.

Approval Evidence

1 source2 linked approval claimsfirst-pass slug non-linear-disturbance-observer
a non-linear disturbance observer (NDO) is applied to estimate the lumped uncertainty

Source:

functionsupports

A non-linear disturbance observer is applied to estimate lumped uncertainty for the designed feedback linearisation control.

Moreover, a non-linear disturbance observer (NDO) is applied to estimate the lumped uncertainty for the designed feedback linearisation control.

Source:

limitationsupports

Observer error degrades system response.

However, the system response is degraded by the existed observer error.

Source:

Comparisons

Source-backed strengths

The main supported strength is explicit incorporation of disturbance estimation into the control loop through a non-linear observer. The study also demonstrates practical real-time implementation on a 32-bit fixed-point DSP (TMS320F2812).

Ranked Citations

  1. 1.
    StructuralSource 1IET Electric Power Applications2012Claim 1Claim 2Claim 3

    Extracted from this source document.