Summary of Contents for Murata GYROSTAR ENC-03JA
- Page 1 OPERATION MANUAL ® GYROSTAR Piezoelectric vibrating Gyroscope MODEL : ENC-03J TYPE Support sensor for video camera May 6, 1999 PRODUCT ENGINEERING SECTION SENSOR MODULE DEPERTMENT CIRCUIT PRODUCTS DIVISION MURATA MFG. CO., LTD.
- Page 2 This angular velocity sensor employs the principle that a Coriolis force results if an angular velocity is applied to a vibrating object. Murata's unique ceramic bimorph vibrating unit is used as the sensor element unit, thereby enabling piezoelectric ceramics to be used for both excitation and detection.
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Page 3: Specifications
ENC-03J type 3. Specifications Type ENC-03JA and ENC-03JB Characteristics Symbol Condition MIN. STD. MAX. Unit Supply voltage +2.7 +3.0 +5.5 Current consumption Isup at Vcc = +3.0V Comparative voltage Vref at -5~+75°C +1.25 +1.35 +1.45 Static output (Bias) angular velocity = 0 Vref Vref Vref... - Page 4 ENC-03J type 4. Dimensions All dimensions are in "mm" Measurement tolerance = +/- 0.2mm J P N 0 3 J A 8 4 1 15.44 3.81 15.24 V c c ø1.0 V r e f G n d O u t...
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Page 5: Installation
ENC-03J type 5. Installation 1) Install the sensor by using the bottom face as the reference point. 2) Install the sensor vertically with respect to the rotating surface. (90 +/- 5 deg ) 3) Install the sensor in a location which minimizes excessive vibration (ex. Model helicopter application) and use elastic materials to absorb external shock and vibration. - Page 6 ENC-03J type 8. Notice 1) ENC-03J can detect angular velocity along only one axis. When using more than one of the same type ENC-03J at the same time, swelling may result on the output due to the mutual interference with sound waves of each sensing devices resonant frequency.
- Page 7 ENC-03J type 2) Confirm the proper mounting direction before installing the sensor. Sensing axis Clockwise Counter clockwis Positive voltage(+) Negative voltage( 3) Bias and scale factor drift Surrounding temperature variation may affect the sensor output (bias, scale factor). Sensor should be mounted where temperature does not vary significantly. When canceling bias drift, please refer to the following examples.
- Page 8 ENC-03J type 10. Application A simplified block diagram is shown in the illustration. GYROSTAR Band pass Amplifier Micro processor A/D converter ENC-05E filter High-pass, Low-pass 1) Positive voltage(+) and negative voltage(-) are obtained in the clockwise and counterclockwise directions, respectively, with the static output as a reference. 2) Cut DC level of output using HPF (Hi-Pass-Filter) with low cut-off frequency on sensor output In order to cancel bias drift.
- Page 9 ENC-03J type Note 1) Please contact our sales representatives or product engineers before using our products listed in this catalog for the applications listed below which require especially high reliability for the prevention of defects which might directly cause damage to the third party’s life, body or property, or when intending to use one of our products for other applications than specified in this catalog.
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