Transient Energy Protection Avionics Flight Control Systems
Flight Control System: Working Principle and Architecture
Working Principle
The flight control system continuously acquires real-time flight attitude/environmental data through sensors (IMU, air data sensors, etc.). The Flight Control Computer (FCC) processes this data and computes control commands, which drive actuators (servos, motors, etc.) to adjust the aircraft's attitude. Core algorithms include PID control, fuzzy logic, and modern Model Predictive Control (MPC).
Typical Architecture
- Perception Layer: MEMS/fiber optic sensor arrays
- Decision Layer: Multi-core heterogeneous computing platform (ARM + FPGA/DSP)
- Actuation Layer: Fly-By-Wire (FBW) actuation system
- Fault-Tolerant Design: Triple-redundant bus (ARINC 659), cross-verification mechanisms
Core Applications of TVS and TVS Arrays
TVS Device Characteristics
- Response time <1ns, precise clamping voltage (e.g., 28V TVS for 33V line protection)
- Representative models: SMBJ series (unidirectional/bidirectional), array-packaged devices.
Protection Scenarios
- Power Bus: Suppresses surges induced by engine ignition (DO-160G standard)
- Communication Interfaces: ESD protection for RS-422/CAN buses (IEC 61000-4-2 Level 4)
- Sensor Inputs: Guards against lightning-induced transients (8/20μs waveform)
Array Technology Advantages
- Integrated design: Single-chip protection for multiple channels.
- Reduced parasitic capacitance: Critical for high-frequency signal lines (Gigabit Ethernet PHY interfaces)
- Space optimization: 0402 package arrays save up to 70% PCB area
Development Trends
1. Smart TVS: Digital TVS with integrated current monitoring.
2. Material Innovation: GaN-based TVS enabling 200°C high-temperature tolerance
3. System-Level Protection: Hybrid solutions combining TVS with PPTC/GDT components
4. Avionics Integration: TVS arrays directly embedded in avionics ASICs (e.g., Honeywell HTS6515)
The advantages of SMC
SMC, as a globally leading power semiconductor device manufacturer with nearly 30 years of history, can provide customers with the most advanced, efficient, and cost-effective third-generation silicon carbide MOSFETs and silicon carbide JBS diodes. In addition, SMC has unique experience in silicon-based power diode devices, and its best-selling high-power ultra-fast recovery diodes, high current Schottky diodes, and other products are highly praised by customers worldwide. SMC's power semiconductor devices can provide higher efficiency, better reliability, good delivery time, and competitive prices for your products. SMC's professional service team around the world allows you to experience the ultimate customer service experience and safeguard your product design.
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