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.

Problem links

Need conditional protein clearance

Derived

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

Taxonomy & Function

Primary hierarchy

Technique Branch

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

Target processes

degradation

Implementation Constraints

cofactor dependency: cofactor requirement unknownencoding mode: genetically encodedimplementation constraint: context specific validationoperating role: builder

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 8functionsupports2012Source 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 9functionsupports2012Source 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 10functionsupports2012Source 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 11functionsupports2012Source 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 12functionsupports2012Source 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 13functionsupports2012Source 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 14functionsupports2012Source 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 15functionsupports2012Source 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 16functionsupports2012Source 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 17functionsupports2012Source 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 18implementationsupports2012Source 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 19implementationsupports2012Source 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 20implementationsupports2012Source 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 21implementationsupports2012Source 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 22implementationsupports2012Source 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 23implementationsupports2012Source 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 24implementationsupports2012Source 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 25implementationsupports2012Source 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 26implementationsupports2012Source 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 27implementationsupports2012Source 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 28limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 29limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 30limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 31limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 32limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 33limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 34limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 35limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 36limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 37limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 38limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 39limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 40limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 41limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 42limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 43limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 44limitationsupports2012Source 1needs review

Observer error degrades system response.

However, the system response is degraded by the existed observer error.
Claim 45proposalsupports2012Source 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 46proposalsupports2012Source 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 47proposalsupports2012Source 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 48proposalsupports2012Source 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 49proposalsupports2012Source 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 50proposalsupports2012Source 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 51proposalsupports2012Source 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 52proposalsupports2012Source 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 53proposalsupports2012Source 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 54proposalsupports2012Source 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 55validity 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 56validity 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 57validity 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 58validity 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 59validity 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 60validity 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 61validity 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 62validity 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 63validity 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 64validity 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).

Compared with CRISPRoff

non-linear disturbance observer and CRISPRoff address a similar problem space because they share degradation.

Shared frame: same top-level item type; shared target processes: degradation; shared mechanisms: degradation

Strengths here: looks easier to implement in practice.

non-linear disturbance observer and nanobody-mediated proteolysis-targeting chimeras address a similar problem space because they share degradation.

Shared frame: same top-level item type; shared target processes: degradation; shared mechanisms: degradation

Strengths here: looks easier to implement in practice.

non-linear disturbance observer and Split-Cas9-based targeted gene editing address a similar problem space because they share degradation.

Shared frame: same top-level item type; shared target processes: degradation; shared mechanisms: degradation

Strengths here: looks easier to implement in practice.

Ranked Citations

  1. 1.
    StructuralSource 1IET Electric Power Applications2012Claim 15Claim 17Claim 3

    Extracted from this source document.