1. CONTINUOUS SENSORS• There are a number of defining properties of interest when considering sensors, - Accuracy - a sensor will statistically vary about an exact reading. If we take a statistical range for all readings (e.g., ±3 standard deviations) this will be a reasonable accuracy. Accuracy can also be given as a relative value (e.g. percentage) - Resolution - Typically used for systems that ‘step’ through readings. This is the smallest increment that the sensor can detect. - Repeatability - When a single sensor condition is made and repeated, there will be a small variation for that particular reading. This is the repeatability. - Range - Natural limits for the sensor - Dynamic Response - the frequency range for regular operation of the sensor. Typically sensors will have an upper operation frequency, occasionally there will be lower frequency limits. - Environmental - temperature and humidity limits exist for many sensors - Calibration - most sensors require some degree of calibration, and their readings may drift over time. 1.1 INPUT ISSUES1.2 SENSOR TYPES1.3 ANGULAR POSITION1.4 LINEAR POSITION1.5 VELOCITY1.6 ACCELERATION1.7 FORCE/MOMENT1.8 FLOW RATE1.9 TEMPERATURE1.10 SOUND1.11 LIGHT INTENSITY1.12 PRESSURE1.13 PRACTICE PROBLEMS1.14 REFERENCES |