Stand und Tendenzen der...
Transcript of Stand und Tendenzen der...
AgrartechnikHohenheim
INSTITUT FÜR AGRARTECHNIK Grundlagen der Agrartechnik
Stand und Tendenzen der Mähdrusch-Entwicklung
Status and trends of the threshing development
Prof. Dr.-Ing. Stefan BöttingerInstitute of Agricultural Engineering
Fundamentals of Agricultural Engineering
VDI-MEG KolloquiumMähdrescher
Hohenheim 12./13.09.2013
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� Market and Product Offer� Threshing, Separating and Cleaning� Cutterbars and Straw Management� Drives and Chassis� Electronics, Control and Information Technology� Machine Use and Operating Costs
� Market and Product Offer� Threshing, Separating and Cleaning� Cutterbars and Straw Management� Drives and Chassis� Electronics, Control and Information Technology� Machine Use and Operating Costs
Status and trends of the threshing development
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Combine market shares Germany. Data from VDMA
Market and Market Shares
Development of important combine markets. Data from VDMA and AEM
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Product Offer and Versions
� most of the manufacturers offer all threshing and separation systems� continous increase of engine power
� continuous broadening of the product range
� strong increasing number of versions
Development of engine power of the product offer in the German combine market.
Engine power of the combine market offer in German 2013.
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Threshing, Separating and Cleaning
� Threshing, Separating and Cleaning � Process Management
� Identify � Adjuste
� Controle
� Process Stabilization� Adapte the settings
� Settings with more stable performance
� Examples� Concave setting
� Circular cleaning unit� Future measurement methods
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Threshing:Process Management and Stabilization
� Possible solutions:� mechanically:
one lever� mechatronically:
six actuators
Many possible settings
Advanced optimization needed
Mümken
Concaves with 6 degrees of freedom
Requirement:easy adjustment
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Cleaning:Process Management and Stabilization
� Mechanical parameter � linear vibrations� circular excitation� elliptical excitation
� Pneumatical parameter� air velocity� flow direction
goals: low loss levelhigh throughputsstable loss characteristic
Cleaning unit with circular oscillation
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Look Inside:High Speed Camera & Color Segmentation
Weiss, M., M. Schwarz, S. Böttinger
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Zhaoa, T. et al.
Look Inside: ETC Electrical Capacitance Tomography
Technical principleof ETC
based on different
di-electrical properties:
Example for reconstruction
of spatial structure:
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Look Inside:Terahertz-Strahler, Fa. Synview
Test set uptransmission and reflection
BSc-Arbeit Haiges
Proposal formeasurement
set up
Sensor
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Cutterbars and Straw ManagementLightweight Design
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Electronics, Control and Information Technology
Stand der Technik Einzellösungen, Vorserien
Einflussgrößen:ErntebedingungenKlimadatenBestandsmerkmaleGeländebeschaffenheitStoffeigenschaften
Stellsignale
Datenerfassung, Datenausgabe
Prozess-Rechner
mit Regler
Autom.Lenkung
Schneid-werk
Haspel Dresch-prozess
Trenn-prozess
Fahr-Geschw.
Hang-ausgleich
Motor-managt.
Autom.Lenkung
Schneid-werk
Haspel Dresch-prozess
Trenn-prozess
Fahr-Geschw.
Hang-ausgleich
Motor-managt.
FührungsgrößenFlächenleistungVerluste, Position/StreckeKraftstoffverbrauchGutart, FeuchteReinheit, Bruchkorn, Qualität
FahrerinformationTechn. ÜberwachungVerlusteFlächenleistungDurchsatzKraftstoffverbrauch
Betriebswirtsch. DatenErntemengenFlächenBetriebsstundenKraftstoffverbrauchErträge
FührungsgrößenFlächenleistungVerluste, Position/StreckeKraftstoffverbrauchGutart, FeuchteReinheit, Bruchkorn, Qualität
FahrerinformationTechn. ÜberwachungVerlusteFlächenleistungDurchsatzKraftstoffverbrauch
Betriebswirtsch. DatenErntemengenFlächenBetriebsstundenKraftstoffverbrauchErträge
Position Korndurchsatz
Bruchkorn
Kornverlust
KraftstoffverbrauchSchnitthöhe/breite
QualitätGesamtdurchsatz
Techn. Überwachung
Überkehr
Reinheit
Position Korndurchsatz
Bruchkorn
Kornverlust
KraftstoffverbrauchSchnitthöhe/breite
QualitätGesamtdurchsatz
Techn. Überwachung
Überkehr
Reinheit
Gesamtdurchsatz
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Legal Framework for Automatic Assistance Systems
� Art. 8.5: „Every driver shall at all times be able to control his vehicle or to guide his animals.”
� Art. 13.1: „Every driver of a vehicle shall in all circumstances have his vehicle under control so as to be able to exercise due and proper care and to be at all times in a position to perform all manoeuvres required of him.”
United Nations Treaty Collection
� No reason for less safety under off-road conditions
Convention on Road Traffic, Vienna Nov. 8th 1968
Fendt Herlitzius
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Legal Framework: Federal Highway Research Institute
� Degrees of Vehicle Management
� Driver only : steering and speed
� Assistent system : steering or speed
� Semi-automatic system : permanent monitoring by driver, take over at any time
� Highly automatic system : no need to monitor permanently, driver must take over when prompted by controller
� Fully automatic system : returns automatically to risk-minimal state
Examples for Cars
ACCStop & Go
Lane Keeping
ACC +Stop & Go +
Lane Keeping
Highway Chauffeur
Highway Pilot
road
field
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High Tech Package for Step 4: Higly Automatic System
� (Nearly) autonomous test drive from Mannheim to Pforzheim� „Only“ cameras and radar as additional sensors� Driver assistance needed several times:
computer overload, wrong parking cars, garbage truck
Stuttgarter Zeitung
09.09.13
� Bunch of sensors, perhaps usable in ag. machines
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Will be covered by presentations …
www.wordle.net
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Status and trends of the threshing development
Simulation:Promising methods
Complex verification and validation
Market and Product Offer:High diversity and complexity achieved with all models
Threshing, Separation and Cleaning:Process knowledge
Process management
Process stabilization
Electronics, Control and Information Technology:From assisted harvesting to (higly) automatic harvesting
Cross-linking of process controls