VEHICLE CONTROL DEVICE

PURPOSE:To heighten vehicle control performance by estimating a road surface condition accurately by fuzzy inference. CONSTITUTION:Output of a vehicle body vertical direction G sensor 1 and wheel speed sensors 2-5 is inputted to a microcomputer 10, and a vibration degree of a specific frequency comp...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	FUKUMOTO TETSUYA, MAEDA TADASHI, KURETAKE TOSHIAKI, SAITO YUMI, INAGE KATSUYUKI, SHOJI SHINICHI
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES AUXILIARY DRIVES FOR VEHICLES BLASTING BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INSTRUMENTATION OR DASHBOARDS FOR VEHICLES LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES TRANSPORTING VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES VEHICLE SUSPENSION ARRANGEMENTS VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To heighten vehicle control performance by estimating a road surface condition accurately by fuzzy inference. CONSTITUTION:Output of a vehicle body vertical direction G sensor 1 and wheel speed sensors 2-5 is inputted to a microcomputer 10, and a vibration degree of a specific frequency component and a low (mu) road degree are calculated, and according to these parameters, an estimate value of a road surface condition such as a 'good road' or a 'bad road' is obtained by fuzzy inference, and control is identified. According to output of a vehicle speed sensor 51, operation is carried out on a control value to carry out control, for example, roller control, dive control and so on except a suspension. According to these control values, the optimal damping force is selected, and a damping force control value is outputted to variable suspensions 2-24. Thereby, unlike operation to estimate only a road surface (mu), since the 'bad road' such as a gravel road or an earth and sand road or the 'good road' unlike that are judged accurately and this estimate value is applied to vehicle travel control, control performance is heightened further, so that comfortableness to ride and maneuvering stability can be reconciled with each other.