CCar Architecture
From ConceptCar
2. Concept Car Architecture
This Section presents the Concept Car platform, including its mechanical and electrical components, hardware and software description, boards, connections, sensors and actuators. It describes their functionalities and how they cooperate with each other.
2.1. Mechanical Components
The base platform of the Concept Car is a RC Car Model CE-5 from Carson Modellbau. This platform has the following parameters:
- Scale is 1:5
- Dimensions (l*w*h) are 80cm * 40cm * 23 cm
- Weight is ~ 8.4kg
- Top speed is ~60km/h
- Rubber wheels, 12cm in diameter
- Gear reduction from motor shaft to rear wheels is 20:44 * 20:77 (2 transmissions)
- Differential gear
2.1.1. Engine
The Concept Car engine is based on an air-cooled sensorless brushless electrical motor, which is presented in Figure 2.1.
Each part of the engine presented in Figure 2.1 is described in the following:
- The motor is a 1930/9 from Lehner Motoren and its characteristics are shown in Figure 2.2. [LM09].
- The engine control is a Power JAZZ from Kontronik. Its characteristics are presented in Table 2.1 [Kon09].
- 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.
- The 5-6V supply voltage of the steering servo (max. 3A) is generated by a high-efficiency step-down voltage converter.
Figure 2.2 presents the Motor Characteristics.
Due to its sensorless nature, the engine tends to stutter when the car is pulling off.
| Characteristics (in German) | POWER JAZZ 63V | Characteristics (in English) |
|---|---|---|
| Zellenzahl (NiCd/NiMH) | 18-45 | Cell count (NiCd/NiMH) |
| Zellenzahl (LiPo) | 5-15 | Cell count (LiPo) |
| Spannungsbereich (V) | 13-63 | Operating Voltage (V) |
| Dauerstrom (A) (2,4AH Akku) | 120 | Contin. current (A) (2,4Ah battery) |
| max. Strom (A) (15sec) | 200 | Max. current (A) (15sec) |
| Maße (mm) Länge | 84 | Size (mm) length |
| Breite | 51 | width |
| Höhe | 35 | height |
| Gewicht (g) ohne Kabel | - | Weight (g) without cables |
| Gewicht (g) mit Kabel | 220 | Weight (g) with cables |
| Kabelquerschnitt (mm²) | 4/6 | Cable-cross-section (mm²) |
| BEC | / | BEC |
| BEC Belastbarkeit max. (A) | / | BEC current max. (A) |
| BEC Kurzschlußfest | / | BEC short circuit protection |
| Auto-Programmier-Modus | x | Auto Programming Mode |
| Modusprogrammierung | / | Mode programming |
| ProgCARD fähig | x | ProcCARD ability |
| Heli Drehzahlregelung | x | Automatic Power Consumption APC |
| EMK-Bremse abschaltbar | x | EMF brake can be disabled |
| proportionale Bremse | / | Proportional brake |
| Verpolschutz | x | Reverse polarity protection |
| Kurzschlußschutz | x | Short circuit protection |
| Anlaufschutz | x | False start protection |
| Strombegrenzung | x | Current limiting |
| Übertemperaturschutz | x | Overtemp. protection |
| Unterspannungsabschaltung | x | Undervoltage cutoff |
| -"- abschaltbar | x | -"- can be disabled |
| Abschaltspann./Zelle variabel* | x | Slow down instead of cutoff* |
| Abregelung statt Abschaltung* | x | Slow down instead of cutoff* |
| aktiver Freilauf | x | Active free wheeling circuit |
| LED Statusanzeige | / | - |
| Taktfrequenz (kHz) | 8-32 | PWM frequency (kHz) |
| Gesamte Kupferstärke (mm) | 1.9 | Total copper thickness |
| Drehrichtungsumpolung | x | Reverse rotation direction |
| Bestellnummer | 4991 | Order number |
