High Precision Single MEMS Gyroscope

This high precision single MEMS gyroscopes are independently developed with a fully digital closed-loop architecture, which is the core design to ensure their superior performance and long-term reliability. Different from the traditional open-loop MEMS gyroscopes, the fully digital closed-loop design realizes real-time detection, feedback and correction of the gyroscope's vibration mode through high-precision digital signal processing (DSP) and advanced closed-loop control algorithms, effectively suppressing the interference of temperature drift, mechanical noise and external environmental factors, thus significantly improving the measurement accuracy and stability of the product.

As a high-performance MEMS gyroscope product, the SG-H series integrates multiple outstanding characteristics to meet the diverse application needs of industrial and inertial navigation fields: it adopts a miniaturized structural design, with compact size and lightweight, which can be easily integrated into various equipment with limited installation space; on the premise of ensuring high performance, it achieves optimized cost control, with high cost-effectiveness, and is suitable for large-scale application scenarios; at the same time, it has excellent environmental adaptability, can work stably in harsh environments such as wide temperature range (-40℃~85℃) and strong vibration, and has good anti-interference ability and long service life.

In terms of key performance parameters, the SG-H series MEMS single-axis gyroscopes have remarkable advantages in bias stability, which is one of the core indicators to measure the precision of gyroscopes. Specifically, its bias stability can reach 1°/h under the condition of 10s smoothing, which is at the leading level in the same type of products. This excellent bias stability ensures that the gyroscope can maintain high measurement accuracy for a long time, effectively reducing the cumulative error of inertial navigation systems, and providing reliable angular velocity measurement support for the equipment.

Due to its excellent performance indicators and product characteristics, the SG-H series MEMS single-axis gyroscopes are widely suitable for various inertial navigation systems that have strict requirements on precision and stability. Typical application scenarios include: small unmanned aerial vehicles (UAVs) inertial navigation and attitude control, industrial robots precision positioning and motion control, marine equipment attitude measurement, aerospace auxiliary navigation, automotive inertial measurement units (IMUs), and other fields that require high-precision angular velocity detection and stable long-term operation. It can effectively improve the navigation accuracy, control stability and operational reliability of the whole system, and provide strong technical support for the upgrading and development of related equipment.

1. Z-axis Sensitive Axis

The gyroscope is designed with a dedicated Z-axis sensitive axis, which is optimized for angular velocity measurement in the Z-axis direction. It adopts high-precision MEMS sensing structure and advanced signal calibration technology, which can accurately detect the angular velocity change of the measured object around the Z-axis, with high sensitivity and strong anti-interference ability. This design makes the product suitable for scenarios that require independent Z-axis angular velocity detection, such as attitude control, rotation state monitoring, and inertial navigation auxiliary measurement, and can provide stable and reliable measurement data for the system.

 

2. 5V Power Supply

The product adopts a standard 5V DC power supply design, which is highly compatible with most industrial control equipment, consumer electronics and embedded systems. The 5V power supply scheme not only simplifies the power supply circuit design of the whole system, reduces the complexity of power supply matching, but also ensures the stable operation of the gyroscope. It can be directly connected to the common 5V power supply module without additional voltage conversion components, effectively reducing the integration cost and improving the convenience of product installation and use.

3. Low Operating Current

With optimized power management circuit and low-power MEMS chip design, the gyroscope has the advantage of low operating current during normal operation. The low power consumption characteristic not only reduces the energy consumption of the whole system, but also extends the service life of the power supply (especially for battery-powered equipment such as portable devices and unmanned aerial vehicles). Meanwhile, low operating current can reduce the heat generation of the product during operation, avoid the impact of temperature rise on measurement accuracy, and further ensure the long-term stable operation of the gyroscope.

4. Low Cost

On the premise of ensuring basic performance indicators, the product achieves cost optimization through optimized structural design, mature production process and reasonable component selection. Compared with high-precision gyroscopes of the same type, it has obvious cost advantages, which is suitable for large-scale application scenarios that have certain requirements on performance but are sensitive to cost, such as consumer electronics, industrial control terminals and low-cost inertial measurement units. It can help customers reduce the overall system cost while meeting the application needs.

5. Excellent Bias Stability

Bias stability is one of the core indicators to measure the precision of MEMS gyroscopes, and this product performs excellently in this index. Its bias stability can reach 1°/h under the condition of 10s smoothing, which effectively suppresses the cumulative error caused by bias drift during long-term operation. This advantage enables the gyroscope to maintain high measurement accuracy for a long time, providing reliable angular velocity data support for high-precision application scenarios such as inertial navigation, precision attitude control and high-precision rotation measurement, and improving the overall performance and reliability of the system.

1. IMU and Navigation System

MEMS gyroscopes are core components of Inertial Measurement Units (IMUs), which are widely integrated into various navigation systems. In inertial navigation systems (INS), MEMS gyroscopes work with accelerometers to detect the angular velocity and linear acceleration of the measured object in real time, and calculate the position, attitude and speed of the object through inertial navigation algorithms. They are suitable for scenarios where GPS signals are weak or lost, such as underground engineering, marine navigation, aerospace and indoor positioning. With excellent bias stability and dynamic response, MEMS gyroscopes can effectively compensate for the positioning error of navigation systems, improve navigation accuracy and continuity, and ensure the stable operation of the whole navigation system in complex environments.

2. Attitude Detection

Attitude detection is one of the most common application scenarios of MEMS gyroscopes, which is widely used in various equipment that needs to monitor and control attitude in real time. Typical applications include aerospace equipment (such as satellites, aircraft and missiles), industrial robots, consumer electronics (such as smartphones, tablets and smart wearables), and marine equipment. In these scenarios, MEMS gyroscopes accurately detect the angular velocity change of the equipment around three axes (roll, pitch and yaw), convert the angular velocity signal into attitude data through signal processing, and provide real-time attitude feedback for the control system. This helps the equipment maintain a stable attitude, improve operation accuracy, and avoid risks such as deviation and overturning during operation.

3. Unmanned Vehicles

With the rapid development of unmanned technology, MEMS gyroscopes have become an indispensable core component in unmanned vehicles, including unmanned aerial vehicles (UAVs), unmanned ground vehicles (UGVs) and unmanned ships. In UAVs, MEMS gyroscopes are used for attitude control, hover stability and flight path correction, ensuring that the UAV can maintain stable flight even in complex air environments (such as strong wind and turbulence). In UGVs and unmanned ships, they are responsible for detecting the rotation state and attitude change of the vehicle, cooperating with navigation and control systems to realize autonomous driving, path planning and obstacle avoidance. The compact size and low power consumption of MEMS gyroscopes are perfectly adapted to the lightweight and miniaturized design requirements of unmanned vehicles, while ensuring high reliability and real-time performance.

4. GPS Assistance

MEMS gyroscopes play an important auxiliary role in GPS (Global Positioning System) positioning, effectively solving the problems of low positioning accuracy and signal loss of GPS in complex environments. In GPS positioning systems, MEMS gyroscopes can make up for the positioning lag and error caused by GPS signal interruption (such as in tunnels, urban canyons and dense forests) by detecting the angular velocity of the object in real time. Through data fusion technology, the positioning data of GPS and the angular velocity data of MEMS gyroscopes are integrated, which not only improves the positioning accuracy and real-time performance, but also enhances the anti-interference ability of the positioning system. This application is widely used in automotive navigation, portable positioning devices, outdoor exploration equipment and other fields, providing more reliable positioning services for users.

1. Superior Precision and Stability

Precision is the core of MEMS gyroscopes, and our product is equipped with a fully digital closed-loop architecture and advanced signal calibration technology. Its bias stability can reach 1°/h (10s smooth), which effectively suppresses the interference of temperature drift, mechanical noise and external environmental factors, ensuring long-term high-precision angular velocity measurement. Whether it is used in inertial navigation, attitude control or high-precision motion monitoring, it can provide stable and reliable data support, reducing the cumulative error of the whole system and improving operational accuracy.

2. Excellent Adaptability and Usability

Our MEMS gyroscope is designed with practicality in mind to meet the diverse needs of different application scenarios. It adopts a Z-axis sensitive axis design, which is optimized for angular velocity measurement in the Z-axis direction and can be flexibly integrated into various systems requiring independent Z-axis detection. With a standard 5V DC power supply, it is highly compatible with most industrial control equipment, embedded systems and consumer electronics, simplifying the power supply circuit design and reducing integration difficulty. In addition, the low operating current design not only reduces energy consumption but also extends the service life of battery-powered equipment, making it suitable for portable and unmanned devices.

3. High Cost-Effectiveness

We adhere to the concept of "high performance at a reasonable cost", and through optimized structural design, mature production processes and rational component selection, we have achieved a perfect balance between product performance and cost. Compared with products of the same precision level, our MEMS gyroscope has obvious cost advantages, which can help you effectively reduce the overall system cost while ensuring application requirements. It is suitable for large-scale application scenarios such as consumer electronics, industrial control terminals and low-cost inertial measurement units, bringing higher cost performance for your projects.

4. Reliable Quality and Long Service Life

Our MEMS gyroscope undergoes strict quality control and reliability testing throughout the production process, from chip manufacturing to product assembly. It adopts a compact and robust structural design, with strong anti-interference ability and excellent environmental adaptability, which can work stably in harsh environments such as wide temperature range (-40℃~85℃), strong vibration and humidity. The low power consumption design also reduces product heat generation, avoiding performance degradation caused by overheating, and ensuring long-term stable operation of the product, reducing maintenance costs and downtime for your system.

5. Wide Application Compatibility

Our MEMS gyroscope is widely applicable to various fields, including inertial measurement units (IMUs) and navigation systems, attitude detection, unmanned vehicles (UAVs, UGVs), GPS assistance, industrial robots, consumer electronics and other scenarios. Whether you need high-precision navigation support, real-time attitude control or auxiliary positioning, our product can be flexibly adapted, providing a one-stop angular velocity measurement solution for your different application needs.

1.Core Mechanism: Coriolis Effect

The Coriolis effect is the fundamental physical principle on which MEMS gyroscopes operate. When a mass moves at a constant velocity in a rotating reference frame, it will be subjected to an inertial force perpendicular to both the direction of motion and the direction of rotation-this force is called the Coriolis force. The magnitude of the Coriolis force is proportional to the angular velocity of the rotating reference frame, the mass of the moving object, and the linear velocity of the object. MEMS gyroscopes utilize this effect to convert the angular velocity of the measured object into a detectable electrical signal, thereby realizing the measurement of angular velocity.

2. Key Structure: Micro-Sensing Oscillator

The core component of a MEMS gyroscope is the micro-sensing oscillator, which is fabricated through MEMS microfabrication technology (such as bulk micromachining or surface micromachining). This oscillator usually consists of a micro-mass block, elastic beams, and driving/detection electrodes. The micro-mass block is suspended on the substrate by elastic beams, which allows it to move in a specific direction under the action of driving voltage. According to the design, the micro-sensing oscillator has two main motion directions: the driving direction (excitation direction) and the sensing direction (detection direction), which are perpendicular to each other.

3. Working Process: Excitation → Coriolis Force Generation → Signal Detection

The entire working process of the MEMS gyroscope is a closed-loop or open-loop cycle, which can be specifically divided into three steps:

- Step 1: Excitation of the Micro-Oscillator - The driving electrodes apply an alternating voltage to the micro-mass block, which generates an electrostatic force to drive the mass block to vibrate periodically in the driving direction at a fixed resonance frequency. This stable vibration is the premise for the subsequent generation of Coriolis force; only when the mass block maintains a constant linear velocity in the driving direction can the Coriolis force be accurately proportional to the measured angular velocity.

- Step 2: Generation of Coriolis Force - When the MEMS gyroscope rotates around the sensitive axis (the axis perpendicular to both the driving and sensing directions), the micro-mass block vibrating in the driving direction will be subjected to the Coriolis force perpendicular to the driving direction (i.e., the sensing direction). The magnitude of this Coriolis force is directly proportional to the angular velocity of the gyroscope's rotation: the greater the angular velocity, the larger the Coriolis force, and vice versa.

- Step 3: Signal Detection and Processing - Under the action of the Coriolis force, the micro-mass block will produce a small displacement in the sensing direction. The detection electrodes sense this displacement and convert it into an electrical signal (usually a capacitance change or voltage change). The signal processing circuit then amplifies, filters, and calibrates this weak electrical signal, converting it into a digital or analog signal that is proportional to the measured angular velocity. Finally, the processed signal is output to the upper system, completing the angular velocity measurement.

4. Open-Loop vs. Closed-Loop Architecture

MEMS gyroscopes are divided into open-loop and closed-loop architectures according to the signal processing method. Open-loop gyroscopes directly detect the displacement of the micro-mass block in the sensing direction and convert it into an output signal; they have the advantages of simple structure and low cost but are susceptible to external interference and have relatively low precision. Closed-loop gyroscopes, on the other hand, add a feedback control link: after detecting the displacement of the mass block, the feedback circuit generates a counterforce to offset the Coriolis force, making the mass block return to the equilibrium position. The magnitude of the feedback force is proportional to the Coriolis force (and thus the angular velocity), which significantly improves measurement accuracy, stability, and anti-interference ability, and is widely used in high-precision application scenarios.

Q1: What does "bias stability of 1°/h (10s smooth)" mean, and why is it important?

A: Bias stability refers to the degree of deviation of the MEMS gyroscope's output signal when there is no angular velocity input (static state), reflecting the long-term measurement accuracy of the gyroscope. The parameter "1°/h (10s smooth)" means that after 10 seconds of signal smoothing processing, the average bias drift of the gyroscope is no more than 1 degree per hour. This indicator is crucial because it directly affects the cumulative error of the system: the better the bias stability, the smaller the cumulative error during long-term operation, which is especially important for high-precision scenarios such as inertial navigation and attitude control.

Q2: What power supply requirements does the MEMS gyroscope have?

A: Our MEMS gyroscope adopts a standard 5V DC power supply design, which is highly compatible with most industrial control equipment, embedded systems, and consumer electronics. It does not require additional voltage conversion components, which simplifies the power supply circuit design. At the same time, the product has a low operating current characteristic, which can effectively reduce system energy consumption and is suitable for battery-powered devices such as portable equipment and unmanned vehicles.

Q3: What is the difference between open-loop and closed-loop MEMS gyroscopes, and which one should I choose?

A: The main difference lies in the signal processing method: Open-loop gyroscopes directly detect the displacement of the micro-mass block in the sensing direction and convert it into an output signal, with the advantages of simple structure and low cost, but lower precision and anti-interference ability, suitable for low-precision scenarios such as consumer electronics. Closed-loop gyroscopes add a feedback control link to offset the Coriolis force through a feedback circuit, significantly improving measurement accuracy, stability, and anti-interference ability, suitable for high-precision scenarios such as inertial navigation, unmanned vehicles, and precision attitude control.

Q4: Can the MEMS gyroscope work normally in harsh environments?

A: Yes. Our MEMS gyroscope has excellent environmental adaptability and can work stably in harsh environments. It can withstand a wide temperature range of -40℃~85℃, and has strong anti-vibration and anti-humidity capabilities. The compact and robust structural design and strict quality testing ensure that it can maintain stable performance in industrial sites, outdoor environments, and other complex scenarios, reducing the impact of environmental factors on measurement accuracy.

Hot Tags: High Precision Single MEMS Gyroscope, China High Precision Single MEMS Gyroscope manufacturers, suppliers, factory, Single Axis MEMS Gyro Component, MEMS gyroscope for north finder, High precision Dual axis MEMS Gyroscope, Triaxial MEMS Gyroscope component, SG E Series Economical Single Axis MEMS Gyroscope, Dual axis MEMS Gyro Component