RGA300CA system. The triaxial accel- erometer is a bulk-micromachined capacitive accelerometer. The acceler- ometer outputs can be used in one of two ways.
The RGA300CA is a high-performance MEMS gyro and triaxial accelerometer subsystem. It is an ideal solution for land vehicles where the majority of the motion control occurs on the yaw rate axis. The unit is compensated for static errors using an on-board DSP processor. Outputs are available in both analog and digital (RS-232) formats. Data is available in a polled mode or continuously at a fixed rate of over 100Hz. No recalibration of the unit is required, and it is designed for a long service-free operating life.
▼ inertial systems
The MEMS angular rate sensor is equiped with a Z-sensitive axis, also known as yaw rate. In addition to the rate sensor, a triaxial silicon MEMS accelerometer is included in the RGA300CA system. The triaxial accelerometer is a bulk-micromachined capacitive accelerometer. The accelerometer outputs can be used in one of two ways. In GPS augmentation applications, the accelerometers can be used to estimate X, and Y velocity by performing a single integration of the
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outputs. A second use for the acceleration signals is an inclinometer. The acceleration sensors have DC response and therefore can accurately measure the gravitational G-force. When the vehicle is static or quasi-static, the accelerometers will indicate the roll and pitch of the vehicle. The static roll and pitch data is calculated in the RGA300CA and output in analog and digital (RS-232) formats. Typical applications for the system include land vehicle guidance and control. Example equipment includes construction vehicles and land robots. Tall buildings, trees, and other obstructions make reliable GPS coverage challenging. The yaw rate sensor of the RGA300CA, allows the system engineer to overcome GPS outages. Each Inertial System comes with a User’s Manual offering helpful hints on programming, installation, and product information. In addition, Crossbow’s GYRO-VIEW software is included to assist you in system development and evaluation, and allows you to perform data acquisition.
Document Part Number: 6020-0036-01
c r o s s b o w t e c h n o l o g y, i n c
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41 daggett drive
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san jose, ca 95134-2109
C Specifications
RGA300CA
Performance Update Rate (Hz) Start-up Time Valid Data (sec) Fully Stabilized Data (sec) Attitude Range: Roll, Pitch (°) Static Accuracy (°) Resolution (°) Angular Rate Range: Yaw (°/sec) Bias: Yaw (°/sec) Scale Factor Accuracy (%) Non-Linearity (% FS) Resolution (°/sec) Bandwidth (Hz) Random Walk (°/hr1/2) Acceleration Input Range: X/Y/Z (g) Bias: X/Y/Z (mg) Scale Factor Accuracy (%) Non-Linearity (% FS) Resolution (mg) Bandwidth (Hz) Random Walk (m/s/hr1/2) Environment Operating Temperature (°C) Non-Operating Temperature (°C) Non-Operating Vibration (g rms) Non-Operating Shock (g) Electrical Input Voltage (VDC) Input Current (mA) Power Consumption (W) Digital Output Format Analog1 Range (VDC)
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