Minimizing Circuit Board Strain Propagation in Surface Mounted Pressure Sensors
Milled PCB isolation slots and controlled solder standoff heights decouple surface mount pressure sensors from assembly flexure and thermal board strain.
Extracting Cross Axis Vibration Rectification Coefficients for Dynamic Gravity Vector Estimation
Extracting cross axis rectification coefficients requires dual tone orthogonal excitation to isolate second order asymmetric stiffness shifts from true tilt.
Isolating Micro-Machined Accelerometer Zero-G Bias Shifts under Static Thermal Cycles
Static thermal zero-g bias shifts in MEMS accelerometers are isolated by enforcing prolonged thermal dwell periods to decouple stress creep from thermal gradients.
The Main Sensor Types and What Each One Measures
Selecting sensors requires matching physical transduction principles to measurands while accounting for thermal drift, noise floor, and fab availability.
Power Budget per Reading across Competing Sensing Principles
Sensing power budgets depend on physical excitation energy, analog settling delays, and converter sampling overhead across operating duty cycles.
Determining Accelerometer Zero Offset Errors during Bench Calibration
Static multi-position gravity inversion separates zero-g offset from scale factor while Allan variance bias instability defines maximum valid integration time.
Stationary Leveling and Gravity Vector Estimation in Inertial Units
Stationary leveling extracts pitch and roll by isolating the 1g local gravity vector, bounded by accelerometer bias stability and vibration rectification error.
Second Source Qualification When the Alternate Part Uses Different Physics
Replacing a primary sensor with an alternate physics module requires rebuilding signal conditioning, cross-sensitivity models, and chamber qualification suites
Bias Instability Figures That Decide Whether Dead Reckoning Holds
Inertial dead reckoning holds only while gyroscope bias instability bounds cubic tilt divergence within allowable spatial position tolerance thresholds.