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| − | __NOTOC__
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| − | ==1.1. Mechanical System==
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| − | The base platform of the Concept Car is a RC Car Model CE-5 from Carson Modellbau. This platform has the following parameters:
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| − | * Scale is 1:5
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| − | * Dimensions (l*w*h) are 80cm * 40cm * 23 cm
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| − | * Weight is ~ 8.4kg
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| − | * Top speed is ~60km/h
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| − | * Rubber wheels, 12cm in diameter
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| − | * Gear reduction from motor shaft to rear wheels is 20:44 * 20:77 (2 transmissions)
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| − | * Differential gear
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| − | ====Table of Contents====
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| − | [[#1.1.1. Engine|1.1.1. Engine]]
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| − | [[#1.1.2. Radio Control|1.1.2. Radio Control]]
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| − | [[#1.1.3. Steering System|1.1.3. Steering System]]
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| − | ====1.1.1. Engine====
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| − | The Concept Car engine is based on an air-cooled sensorless brushless electrical motor, which is presented in Figure 2.1.
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| − | Each part of the engine presented in Figure 2.1 is described in the following:
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| − | * The motor is a 1930/9 from Lehner Motoren and its characteristics are shown in Figure 2.2. [LM09].
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| − | * The engine control is a Power JAZZ from Kontronik. Its characteristics are presented in Table 2.1 [Kon09].
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| − | * The power is supplied by an accumulator with a nominal voltage of ~21V and the ability to sustain a permanent discharge current of at least 80A. The actual type and internal construction of the accumulator is irrelevant, as long as these specifications are met. Currently a 5S1 LiPo accumulator is used.
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| − | * The 5-6V supply voltage of the steering servo (max. 3A) is generated by a high-efficiency step-down voltage converter.
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| − | Figure 1.2 presents the Motor Characteristics.
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| − | Due to its sensorless nature, the engine tends to stutter when the car is pulling off.
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| − | {| border="1"
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| − | |+ '''Table 1.1: Kontronik Power JAZZ characteristics'''
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| − | ! Characteristics (in German) !! POWER JAZZ 63V !! Characteristics (in English)
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| − | |-
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| − | | Zellenzahl (NiCd/NiMH) || 18-45 || Cell count (NiCd/NiMH)
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| − | |-
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| − | | Zellenzahl (LiPo) || 5-15 || Cell count (LiPo)
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| − | |-
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| − | | Spannungsbereich (V) || 13-63 || Operating Voltage (V)
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| − | |-
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| − | | Dauerstrom (A) (2,4AH Akku) || 120 || Contin. current (A) (2,4Ah battery)
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| − | |-
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| − | | max. Strom (A) (15sec) || 200 || Max. current (A) (15sec)
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| − | |-
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| − | | Maße (mm) Länge || 84 || Size (mm) length
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| − | |-
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| − | | Breite || 51 || width
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| − | |-
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| − | | Höhe || 35 || height
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| − | |-
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| − | | Gewicht (g) ohne Kabel || - || Weight (g) without cables
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| − | |-
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| − | | Gewicht (g) mit Kabel || 220 || Weight (g) with cables
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| − | |-
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| − | | Kabelquerschnitt (mm²) || 4/6 || Cable-cross-section (mm²)
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| − | |-
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| − | | BEC || / || BEC
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| − | |-
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| − | | BEC Belastbarkeit max. (A) || / || BEC current max. (A)
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| − | |-
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| − | | BEC Kurzschlußfest || / || BEC short circuit protection
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| − | |-
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| − | | Auto-Programmier-Modus || x || Auto Programming Mode
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| − | |-
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| − | | Modusprogrammierung || / || Mode programming
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| − | |-
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| − | | ProgCARD fähig || x || ProcCARD ability
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| − | |-
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| − | | Heli Drehzahlregelung || x || Automatic Power Consumption APC
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| − | |-
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| − | | EMK-Bremse abschaltbar || x || EMF brake can be disabled
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| − | |-
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| − | | proportionale Bremse || / || Proportional brake
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| − | |-
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| − | | Verpolschutz || x || Reverse polarity protection
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| − | |-
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| − | | Kurzschlußschutz || x || Short circuit protection
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| − | |-
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| − | | Anlaufschutz || x || False start protection
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| − | |-
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| − | | Strombegrenzung || x || Current limiting
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| − | |-
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| − | | Übertemperaturschutz || x || Overtemp. protection
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| − | |-
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| − | | Unterspannungsabschaltung || x || Undervoltage cutoff
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| − | |-
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| − | | -"- abschaltbar || x || -"- can be disabled
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| − | |-
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| − | | Abschaltspann./Zelle variabel* || x || Slow down instead of cutoff*
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| − | |-
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| − | | Abregelung statt Abschaltung* || x || Slow down instead of cutoff*
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| − | |-
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| − | | aktiver Freilauf || x || Active free wheeling circuit
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| − | |-
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| − | | LED Statusanzeige || / || -
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| − | |-
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| − | | Taktfrequenz (kHz) || 8-32 || PWM frequency (kHz)
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| − | |-
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| − | | Gesamte Kupferstärke (mm) || 1.9 || Total copper thickness
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| − | |-
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| − | | Drehrichtungsumpolung || x || Reverse rotation direction
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| − | |-
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| − | | Bestellnummer || 4991 || Order number
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| − | |}
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| − |
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| − | ====1.1.2. Radio Control====
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| − | The ConceptCar is remotely operated via a standard 2 channel 27MHz radio transmitter system. The channels are used for throttle and steering data. The radio receiver generates a 50Hz PWM signal with 5% to 10% duty cycle.
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| − | ====1.1.3. Steering System====
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| − | The steering system has simple mechanics; a servo motor sets the steering angle. Within a range of ±30° the steering angle is set to (pulse – 1.5ms) * 1° / 0.018ms, where “pulse” denotes the length of a PWM pulse at a PWM frequency of 50Hz.
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