VIDYUTSYNC FLIGHT OS v2.4 CLOSED-LOOP TWIN

6U LEO CubeSat (500 km SSO) | 4S1P 30Wh Li-ion (Rint,20°C = 0.20 Ω) | 48W Solar Array | Dual-Bus 12.2–16.4V

T+00:00
🌑 ECLIPSED SHADOW (0–35m)
L2: DEFICIT MODE
🟢 VIDYUTSYNC: 100% NOMINAL
EKF: ±38.2 mV (99.42%)
ORBITAL REVOLUTION TIMELINE (500 km LEO SSO) Alt: 500 km | Vorb: 7.67 km/s | Period: 100.0 min
Click/Drag track bar or slider to scrub in time
🌑 ECLIPSED SHADOW AREA (t = 0 to 35m) [Solar: 0 W]
⚡ SUNRISE TRANSITION (t = 35.0m)
☀️ NON-ECLIPSED SUNLIGHT AREA (t = 35 to 100m) [Solar Array: 48 W Active]
T+0.0m | Solar: 0.0W
BUS BLACKOUT TIME 100% PREVENTED
0.0 ms Conv: 18.2 min blackout
MINIMUM BUS VOLTAGE ≥ 12.46 V SAFE
12.48 V Conv: 12.20V Trip
SUB-ZERO LITHIUM PLATING -58% REDUCTION
2.8 A·min Conv: 6.7 A·min
PRE-SUNRISE CELL TEMP ALAP WARMED
-1.1°C Conv: -1.9°C Freeze
TASKS ACCOMPLISHED 100% SUCCESS
10/10 Conv: 7/10 (3 Lost)

4-LAYER VIDYUTSYNC FLIGHT ARCHITECTURE

UNREGULATED BATTERY BUS (12.2 – 16.4 V)

DIRECT COUPLING
Channel #1: Internal Battery Pack Heater Power: 4.0 W | Bus: Unregulated | LCL Trip: 0.45 A (20 µs)
LCL ARMED
Channel #2: S-band High-Speed PA Transmitter Power: 10.5 W | Bus: Unregulated | LCL Trip: 1.15 A (10 µs)
LCL ARMED
Channel #3: Multispectral Optical Imager Sensor Power: 13.5 W | Bus: Unregulated | LCL Trip: 1.40 A (8 µs)
LCL ARMED
10F Supercapacitor Transient Buffer

Absorbs 2–20 µs RF burst & imager inrush spikes to prevent inductive bus sag.

14.48 V
1048.3 J Bank

REGULATED AVIONICS BUS (3.3 V & 5.0 V)

95.4% GaN Buck Regulator
Channel #4: On-Board Computer (OBC Core) Power: 0.50 W (DVFS throttled: 0.32 W) | Voltage: 3.3 V
CRITICAL
Channel #5: ADCS Reaction Wheels & Magnetorquers Power: 1.80 W | Voltage: 5.0 V Regulated
CRITICAL
Channel #6: GNSS Ephemeris Receiver & Time Lock Power: 0.80 W | Voltage: 3.3 V Regulated
LCL ARMED
Channel #7: UHF Transceiver Ground Beacon Power: 0.60 W | Voltage: 3.3 V Regulated
LCL ARMED
Autonomous Hardware Protection (DNEL)

Disconnection of Non-Essential Load triggers autonomously if bus dips below 12.30V.

DNEL ARMED (NOMINAL)
NORMAL MODE 40 – 100% SoC

Full payload operations permitted. All science instruments, high-rate downlinks, and scheduled optical imager sweeps admitted.

Admission Floor: Priority ≥ 0 (All)
Typical Bus Load: 20.0 – 25.0 W
DEFICIT MODE 20 – 40% SoC (ACTIVE AT ENTRY)

Battery undercharged at shadow entry (38% SoC). Non-essential loads deferred. Flight scheduler prioritizes avionics and ALAP pre-warming.

Admission Floor: Priority ≥ 50
Allowed Shadow Load: 3.7 – 7.5 W (Throttled)
SURVIVAL MODE 0 – 20% SoC

Severe power emergency. All non-essential loads severed via DNEL. OBC throttled to minimum clock. Only ADCS safe detumble and UHF beacon alive.

Admission Floor: Priority ≥ 80 (Life Support)
Emergency Bus Load: ≤ 2.2 W
PRIORITY ADMISSION QUEUE (SORTED BY ASCENDING Hi) DVFS ACTIVE (P ∝ f³, 36% Throttle)
DETERMINISTIC HEURISTIC COST FUNCTION:
Hi = wprPri + wduDui - wdeDelayi + wpoPoi + PEi + BIi
Sorts in O(n log n). Deterministic and certified under DO-178C avionics standards.
DYNAMIC SAFETY CEILING FORMULA:
Imax(t) = [VOC(SoC) - 12.20 V - 0.24 V] / Rint(Tcell)
I_max: 3.20 A I_batt: 1.15 A
OFFLINE RL GROUND WEIGHT TUNING (MADDPG/DQN)

Deep Reinforcement Learning runs strictly offline on ground digital twins to optimize weights (wpr, wpo). Flight code executes pure deterministic sorting.

DO-178C CERTIFIED
⚡ MAX_VAR_ALAP ACTIVE: Pre-sunrise Ohmic Warming in progress!

TASK TIMELINE COMPARISON: CONVENTIONAL STATIC VS. VIDYUTSYNC MAX_VAR_ALAP

Conventional Fixed Schedule (~25 W Shadow Load) 🚨 Hardware Cutoff Trip @ t = 21.0m (18.2m Bus Blackout)
Fixed Load (25.2W)
SHADOW BLACKOUT (14m)
VOLTAGE PIT (4.2m)
Delayed Reboot (7/10 Tasks)
VidyutSync Layer 4 Electro-Thermal MAX_VAR_ALAP -1.9°C → -1.1°C Pre-Warmed (-58% Plating)
Lean Shadow Avionics (4.1W)
🔥 ALAP Pre-Warming Burst (t=24–35m)
☀️ Clean Sunrise & Deferred Heavy Payloads (10/10 Tasks)
Ohmic Dissipation: Q̇ohmic = Ibatt² · Rint(T) = 0.92 W
Lithium Plating Savings: 6.7 → 2.8 A·min (-58% Damage) at ZERO extra Wh!

CHRONOLOGICAL FLIGHT EVENT FEED & SAFETY MONITOR

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