Industrial Technologies

division of BIOLAB 

Silicon Sensing Systems

Model CRS03 Series Silicon VSG Rate Gyroscope  

  

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  • Features

    • Three model types available

    • Excellent performance over temperature

    • Repeatable drift characteristic

    • High shock and vibration operation

    • High reliability

    • Metalised housing

      

  • Applications

    • Automotive Yaw Rate Sensor  

    • Global Positioning System (GPS) Dead-reckoning  

    • Fluxgate Compass compensation  

    • In-Car Navigation Systems  

    • Mobile dish antenna stabilized platform  

    • Mobile camera platform stabilisation  

    • Robotics  

    • Simulators  

    • Telematics / Fleet-management  

    • Remote Control Vehicles  

    • Dynamic measurement units  

    • Drive safety recorder (blackbox for car/marine)  

    • AGV, wheelchair  

    • Marine Satellite Compasses  

    • Angle Wrench  

    • Agricultural Tractors  

    • Physiotherapy / therapeutic Equipment  

    • 3-D input devices  

  • Operating Principle

    • A vibration is exerted to the silicon ring at ring's resonating frequency (Mode 1). ; 

    • Rotational motion produces Corioli's forces which couple vibration to a point 45 degrees relative to the driven axis (Mode 2).  

    • Monitoring the mode-1 null point (node) in the mode-2 gives a direct measure of applied angular rate. 

    • The above vibratory modes are unlikely to occur by external shock/vibrations, hence the rate gyroscope can maintain consistent performance in harsh environments. 

Characteristics

Analog DC output at 2.5Vdc centre, varies proportional to the applied angular velocity (rate of turn).

 

Specification (Typical Data)

CRS03-01 

 CRS03-02

 CRS03-04

Rate Range

±100°/s

±100°/s

±200°/s

Output

Analogue voltage (ratiometric)

Analogue voltage (ratiometric)

Analogue voltage (ratiometric)

Scale Factor

 

 

 

Nominal

20mV/°/s

20mV/°/s

10mV/°/s

Variation over temperature range

< ±3%

< ±3%

< ±3%

Non linearity

< ±0.5% of full scale

< ±0.5% of full scale

< ±0.5% of full scale

Bias

 

 

 

Setting tolerance

< ±3°/s

< ±3°/s

< ±3°/s

Variation over temperature range

< ±2°/s

< ±2°/s

< ±2°/s

Ratiometric error

< ±1°/s

< ±1°/s

< ±1°/s

Drift vs. time

 < ±0.55°/s in any 30s period (after ready time)

g Sensitivity

< ±0.1°/s/g on any axis

< ±0.1°/s/g on any axis

< ±0.1°/s/g on any axis

Bandwidth

10Hz (-3dB)

10Hz (-3dB)

10Hz (-3dB)

Quiescent Noise

< 1mV rms

< 1mV rms

< 1mV rms

Environment

 

 

 

Temperature

–40°C to +85°C

–40°C to +85°C

–40°C to +85°C

Linear acceleration

< 100g

< 100g

< 100g

Shock

200g (1ms, 1/2 sine)

200g (1ms, 1/2 sine)

200g (1ms, 1/2 sine)

Vibration

2g rms (20Hz to 2kHz, random)

2g rms (20Hz to 2kHz, random)

2g rms (20Hz to 2kHz, random)

Cross-axis sensitivity

< 5%

< 5%

< 5%

Mass

< 18 grams

< 18 grams

< 18 grams

Electrical

Voltage (supply)

+4.75V to +5.25V

+4.75V to +5.25V

+4.75V to +5.25V

Current (supply)

< 35mA (steady state)

< 35mA (steady state)

< 35mA (steady state)

Noise and ripple

< 15mV rms (DC to 100Hz)

< 15mV rms (DC to 100Hz)

< 15mV rms (DC to 100Hz)

Ready time

< 0.2s

< 0.2s

< 0.2s

*Ratiometric example with the supplied VOLTAGE at 5.00Vdc  Above are typical values. See spec sheet for details. Current at initialisation is 100mA (0.5sec)

© Copyright Silicon Sensing Systems Japan Ltd.