Epson has newly developed Inertial Measurement Unit (IMU) products for M-G366PDG and M-G330PDG

The output range of the accelerometer can be selected by the user as ± 8G or ± 16G

Seiko Epson Corporation (TSE: 6724, "Epson") has expanded its lineup of Inertial Measurement Units (IMUs) 1 equipped with high-performance six axis sensors by adding a newly developed standard model M-G366PDG ("M-G366") and a basic model M-G330PDG ("M-G330"). Samples will be shipped starting in January 2023. Mass production is scheduled to begin in the spring of 2023.

          M-G366PDG                                                  M-G330PDG

    Epson's IMU was launched in 2011 and has been used in a range of customer applications, from precision agriculture (GNSS2) and drones to camera and antenna platform vibration control and stability, earning a good reputation for its excellent performance and quality. Epson's IMU series includes high specification M-G370PDS ("M-G370S") and M-G370PDF ("M-G370PDF"), which provide high stability and precision measurement capabilities as well as low noise. They are a one inch platform and measure approximately one inch along the side. To expand this size option, Epson added M-G366 as the standard model and M-G330 as the basic model.

    M-G366 and M-G330 allow users to choose an accelerometer output range of ± 8G or ± 16G. In addition, they provide a nonlinearity of 0.05% across all output ranges of the gyroscope sensor, allowing for accurate measurement of various movements, whether slow or fast. By expanding its product lineup of small, lightweight, low-power, and one inch platforms, Epson will enable customers to choose products with better functionality and performance for their applications.

    Considering the ongoing social and technological changes, Epson believes that the demand for precise sensors capable of visualizing information will only expand in the future. Epson will continue to leverage our efficient, compact, and precise innovation philosophy to provide small, lightweight, and low-power sensing systems with excellent accuracy and stability, making significant contributions to our customers' products and services.

Product features

One inch platform (24 x 24 x 10 mm ³)

Downward compatibility with M-G370 and M-G370S, significantly reducing customer development costs and evaluation time

Users can choose an accelerometer output range of ± 8G or ± 16G

0.05% gyroscope sensor nonlinearity

Low current consumption: 16 mA

Product application

Unmanned aerial vehicles (industrial drones, ground vehicles, maritime detectors, etc.)

Vibration reduction of cameras, antennas, etc.

Vibration, angle, trajectory measurement, etc. of industrial equipment.

Navigation systems (GNSS, INS4, high-precision locator), etc.

1 Inertial Measurement Unit (IMU)

IMU is a device used to sense inertial motion. It consists of a three-axis angular rate sensor and a three-axis accelerometer.

2 Global Navigation Satellite Systems (GNSS)

A satellite system for precise positioning of geographical locations anywhere in the world

• 3 nonlinearity

The * * * deviation between the output of a gyroscope sensor or accelerometer and the approximate straight line of the input. It is usually expressed as a percentage of full scale.

4 Inertial Navigation Systems (INS)

5 gyroscope sensors (angular rate sensors)

Measure the rotation angle (angular rate) of an object relative to the reference axis per unit of time.

6 bias instability

The portion of Allan variance * that represents the horizontal (zero power) characteristic is called bias instability. It is related to 1/f noise and is one of the important indicators of sensor potential.

7 Corner Random Walk

The part of Allan variance with a slope of -1/2 is called angle random walk. Due to its correlation with white noise, increasing the average time will cause the value to decrease to -1/2 of the average time.

*Allan variance

As an indicator of sensor performance, Allan variance represents the stability of static output. The horizontal axis represents the average time of the data, and the vertical axis represents the distribution of the average value divided by the average time. The slopes of the characteristics that appear in Allan variance are -1, -1/2, 0, 1/2, and the 1st power slope. Allan variance is related to noise density, and noise density is frequency. Allen variance is an indicator expressed in time. The smaller the value, the higher the stability and performance.