L3-CRY-COOL-CTRL
CRITICAL
PRESERVATION
Level 3 · hardware
Cryocooler Control Electronics
Autonomous Cryocooler Power and Temperature Controller
Control electronics managing cryocooler power, temperature setpoints, and redundancy switching
Purpose
Control electronics managing cryocooler power, temperature setpoints, and redundancy switching
Context
Child of L2-CRY-COOL
Principles
- ▸Closed-loop temperature control adjusts compressor stroke to maintain precise setpoint
- ▸Redundancy management automatically switches to standby cooler on primary failure
- ▸Soft-start circuitry prevents power surge during cryocooler startup
- ▸Health monitoring tracks cooler vibration, power draw, and efficiency for predictive maintenance
Typical implementations
- ▸Sunpower cryocooler controller electronics
- ▸Thales Cryogenics cooler drive electronics
- ▸Custom FPGA-based cryocooler controllers for space missions
Lunar considerations
- ▸Controller must respond within seconds to prevent sample warming on cooler failure
- ▸Power allocation coordination with Ark power management system during lunar night
- ▸Radiation-hardened electronics required for 100-year autonomous operation
- ▸Must support both automatic and commanded redundancy switching
Specifications
Functional
| primary function | Control electronics managing cryocooler power, temperature setpoints, and redundancy switching |
Physical
| materials | Rad-hard FPGA, Linear power amplifier, Pt100 temperature sensors, MRAM state storage |
Interfaces
Provides
- Power drive signals and temperature control commands
Requires
- System-level commands and telemetry requests
- Power for controller electronics (~20W)
Cite this entry
Lunar Ark Codex. "Cryocooler Control Electronics" (L3-CRY-COOL-CTRL). Retrieved 10 September 2026, from https://lunarark.com/entry/L3-CRY-COOL-CTRL
Licensed CC-BY-SA 4.0. You may reuse and adapt this entry with attribution, under the same licence.