High-precision Dual-axis MEMS Gyroscope

1. High Precision with Stable Bias Performance

The product features excellent measurement precision, especially in bias stability, which is a core indicator of gyroscope performance. Under the condition of 10-second smoothing, 1σ confidence level and room temperature (25℃±5℃), the bias stability reaches 0.4°/h. This high-precision performance is achieved through advanced MEMS chip design, multi-point temperature calibration and high-order error compensation algorithm, which effectively suppresses zero drift and random errors caused by environmental factors and component aging. It can provide accurate and stable angular rate measurement data for a long time, fully meeting the high-precision requirements of scenarios such as inertial navigation, attitude control of small unmanned platforms and precision industrial measurement.

2. Compact Size for Easy Integration

With a miniaturized integrated design, the product has a compact structure and small volume, with the overall dimension of only 21.5mm×21.5mm×27mm. The small size design is based on optimized MEMS chip packaging technology and integrated circuit layout, which greatly reduces the space occupation while ensuring performance. This advantage makes it easy to integrate into various compact carrier systems, such as miniaturized electro-optical pods, micro unmanned aerial vehicles (UAVs), portable inertial measurement units (IMUs) and small-sized attitude control modules. It can perfectly adapt to the installation environment with limited space, without affecting the overall structure and weight distribution of the carrier.

3. Strong Anti-Electromagnetic Interference (EMI) Capability

The product is equipped with a professional electromagnetic shielding structure and anti-interference circuit design, which effectively improves its anti-electromagnetic interference capability. It adopts a full metal shielding case to isolate external electromagnetic radiation, and the internal circuit is optimized for anti-interference layout, which can suppress the interference of electromagnetic signals such as radio frequency (RF), electromagnetic pulse (EMP) and static electricity on the gyroscope's measurement accuracy. It meets the relevant electromagnetic compatibility (EMC) standards, ensuring stable and reliable operation even in complex electromagnetic environments such as industrial sites, aerospace and military applications, without signal distortion or performance degradation.

4. Excellent Environmental Adaptability & High Reliability

The MEMS gyroscope has strong environmental adaptability, which can work stably in extreme temperature ranges (-40℃ to +85℃), and can withstand harsh conditions such as strong vibration, impact and humidity. It passes strict environmental tests (including shock test, vibration test, high and low temperature cycle test and humidity test), with high structural strength and stable component performance. The product adopts a sealed packaging process to prevent dust, moisture and other impurities from entering the internal chip, effectively extending the service life. Its mean time between failures (MTBF) is as long as thousands of hours, which can meet the long-term stable operation needs of industrial, aerospace and other high-reliability scenarios.

5. Low Power Consumption & Cost-Effective

Compared with traditional inertial measurement components, MEMS gyroscopes have the advantages of low power consumption and high cost performance. The power consumption is usually as low as a few milliwatts to tens of milliwatts, which is especially suitable for battery-powered equipment such as portable devices and unmanned platforms, effectively extending the working time of the equipment. In terms of cost, relying on mature mass production technology, the production cost of MEMS gyroscopes is significantly lower than that of traditional mechanical gyroscopes and fiber optic gyroscopes, while ensuring high performance, which can help users reduce the overall cost of equipment and improve market competitiveness.

6. Flexible Customization & Wide Application Range

The MEMS gyroscope supports flexible customization according to user needs, including adjusting the measurement range, optimizing the output interface (such as RS-422, CAN bus, Ethernet), customizing the error compensation algorithm and adjusting the structural size. It can be widely applied in various fields such as aerospace, unmanned systems (UAVs, unmanned ground vehicles, unmanned ships), electro-optical pods, industrial precision measurement, automotive electronics and wearable devices. It can also realize in-situ replacement of traditional dual-axis dynamically tuned gyroscopes, without modifying the existing installation structure and control system of the carrier, greatly reducing the replacement cost and cycle.

1. Electro-optical Pods

Electro-optical pods are core equipment for aerial observation, target tracking and precision guidance, which are widely used in aircraft, UAVs, ships and other carriers. The high-precision dual-axis MEMS gyroscope plays a key role in the stabilization control system of electro-optical pods. It can real-time measure the angular motion (roll and pitch) of the pod caused by the carrier's jitter, turbulence and other factors, and feed back the high-precision angular rate data to the control system. The control system adjusts the pod's attitude in real time according to the data, offsetting the impact of external jitter, ensuring that the optical lens remains stable, and realizing clear imaging and accurate target tracking. Thanks to its small size and light weight, the gyroscope can be easily integrated into the compact structure of the electro-optical pod without affecting the pod's overall weight and maneuverability, and its strong anti-electromagnetic interference capability ensures stable operation even in complex electromagnetic environments such as aerial missions.

2. Unmanned Platforms

The high-precision dual-axis MEMS gyroscope is an indispensable core component for various unmanned platforms, including unmanned aerial vehicles (UAVs), unmanned ground vehicles (UGVs), unmanned ships and other equipment, providing key inertial measurement and attitude control support.

For UAVs (especially small and miniaturized UAVs for precision mapping, aerial surveying and military reconnaissance), the gyroscope real-time measures the angular rates of the two horizontal axes, cooperates with accelerometers and GPS modules to form an inertial navigation system, which can accurately calculate the UAV's attitude, position and motion state. When the GPS signal is lost or interfered, it can still provide stable attitude reference, ensuring the UAV's stable flight and task execution. For UGVs and unmanned ships working in complex environments (such as harsh terrain, strong wind and waves), the gyroscope can resist the interference of vibration, impact and electromagnetic signals, stably measure the angular motion of the platform, help the control system adjust the driving direction and attitude in real time, and improve the autonomy, stability and safety of the unmanned platform.

3. Attitude Control Systems

The high-precision dual-axis MEMS gyroscope is widely used in the attitude control systems of various carriers, including small aircraft, missiles, satellites, ships and industrial equipment, to realize accurate attitude detection and closed-loop control. In small aircraft and missiles, the gyroscope measures the angular rate of the carrier's horizontal axes in real time, providing accurate data for the attitude control system to adjust the rudder surface and engine thrust, ensuring the carrier's stable flight and precise guidance. In satellite attitude control, the gyroscope, as a key inertial measurement component, can accurately detect the satellite's attitude deviation, cooperate with the attitude control actuator to adjust the satellite's attitude, ensuring that the satellite maintains the correct orientation in orbit. In industrial equipment (such as precision rotating machinery, robotic arms), the gyroscope can monitor the angular motion state of the equipment in real time, help the control system adjust the operation parameters, improve the operation precision and stability of the equipment.

4. Inertial Navigation Auxiliary Systems

In the inertial navigation systems of vehicles, ships, aircraft and other carriers, the high-precision dual-axis MEMS gyroscope serves as an auxiliary measurement component, complementing the main navigation system (such as fiber optic gyroscope, laser gyroscope) to improve the navigation precision and reliability. It can make up for the deficiency of the main navigation system in terms of volume, weight and cost, and provide redundant measurement data. When the main navigation system fails or is interfered, the gyroscope can quickly take over the inertial measurement task, ensuring the continuous operation of the navigation system. In addition, in the field of vehicle navigation, the gyroscope can effectively suppress the drift of the navigation system when the vehicle is driving in tunnels, urban canyons and other environments where GPS signals are weak, improving the positioning precision and stability of the navigation system.

5. Industrial Precision Measurement

In industrial production and precision measurement fields, the high-precision dual-axis MEMS gyroscope is used for angular rate measurement and attitude calibration of various equipment and workpieces. For example, in the field of precision machining, it can monitor the angular motion of the machine tool spindle in real time, help adjust the machining parameters, improve the machining precision of the workpiece; in the field of bridge and building detection, it can measure the angular deformation of the structure in real time, providing data support for structural health monitoring; in the field of optical equipment calibration, it can calibrate the attitude of the optical lens and measuring instrument, ensuring the measurement precision of the equipment. Its high precision, small size and strong environmental adaptability make it suitable for various harsh industrial measurement environments.

6. Military and Aerospace Fields

In military and aerospace fields, the high-precision dual-axis MEMS gyroscope is widely used in various weapon systems and aerospace equipment due to its excellent performance. In missile guidance systems, it provides high-precision angular rate measurement data for the guidance system, ensuring the missile's precise strike capability; in military UAVs and reconnaissance aircraft, it supports the platform's stable flight and precision reconnaissance mission; in aerospace equipment such as satellite accessories and launch vehicles, it is used for attitude detection and control, ensuring the stable operation of the equipment in harsh space environments. Its independent intellectual property rights and full independent control of core technologies also ensure the security and reliability of military and aerospace equipment.

1. Independent Core Technology & Reliable Quality Assurance

We adhere to independent research and development, and the core component of the product - the MEMS gyroscope chip - has independent intellectual property rights, realizing full independent control of core technologies. This not only avoids the risks of technical blockades, supply chain constraints and information security loopholes brought by relying on imported chips, but also ensures the stability and consistency of product performance. Every product undergoes strict factory calibration, environmental testing and reliability verification, including high and low temperature cycle tests, shock and vibration tests, electromagnetic compatibility tests and long-term stability tests, to ensure that each gyroscope can meet the high-standard performance requirements and work stably and reliably in various harsh environments.

2. Leading High-precision Performance & Comprehensive Error Compensation

High precision is the core advantage of our product. Under the condition of 10-second smoothing, 1σ confidence level and room temperature, the bias stability reaches 0.4°/h, and the angular random walk and scale factor accuracy are at the industry-leading level. We adopt advanced multi-dimensional error compensation algorithms, covering temperature compensation, installation misalignment angle compensation, nonlinear error compensation, zero drift compensation and scale factor error compensation, which effectively offsets the impact of environmental changes, installation deviations and component aging on measurement accuracy. Whether in high-temperature, low-temperature or complex electromagnetic environments, the product can output stable and accurate two-axis angular rate information, fully meeting the high-precision measurement needs of inertial navigation, attitude control, electro-optical pod stabilization and other key scenarios.

3. Compact Design & Easy Integration, Reducing Application Costs

Compared with traditional dual-axis dynamically tuned gyroscopes and other inertial measurement components, our product adopts a miniaturized and integrated design, with a compact structure (as small as 21.5mm×21.5mm×27mm) and light weight (no more than 50g), which greatly reduces the space occupation and load pressure of the carrier. The integrated design of driving circuit, signal picking-up circuit, digital signal processing circuit and control software makes the product have a simple interface and easy integration, which can be quickly integrated into various compact equipment such as micro UAVs, miniaturized electro-optical pods and portable inertial measurement units. More importantly, the product is fully compatible with the installation interface, electrical parameters and communication protocol of traditional dual-axis dynamically tuned gyroscopes, enabling in-situ replacement without modifying the carrier's existing installation structure and control system, which greatly reduces the replacement cost, time cost and technical transformation cost for users.

4. Strong Environmental Adaptability & Wide Application Scope

Our high-precision dual-axis MEMS gyroscope has excellent environmental adaptability and anti-interference capability. It can work stably in the extreme temperature range of -40℃ to +85℃, and can withstand strong vibration (10-2000Hz, 10g), strong impact (1000g, 0.5ms) and high humidity environments. The built-in full-metal electromagnetic shielding structure and anti-interference circuit design enable the product to effectively resist radio frequency interference, electromagnetic pulse and static electricity, meeting the electromagnetic compatibility standards of various industries. These advantages make the product widely applicable to aerospace, unmanned systems, electro-optical pods, industrial precision measurement, military equipment and other fields, and can adapt to various harsh working scenarios, providing reliable data support for different types of user needs.

5. Flexible Customization & Professional Technical Support

We deeply understand that different industries and application scenarios have diverse requirements for gyroscopes. Therefore, we provide personalized customization services according to the specific needs of users, including adjusting the measurement range, optimizing the output interface (such as RS-422, CAN bus, Ethernet), customizing the error compensation algorithm, and adjusting the structural size, to fully match the user's actual application needs. At the same time, we have a professional technical team with rich experience in inertial measurement and product application, providing full-cycle technical support for users, including pre-sales technical consultation, in-sales installation guidance and after-sales maintenance services. We respond quickly to user needs, solve technical problems in a timely manner, and ensure the smooth progress of user projects.

6. Cost-Effective & High Market Competitiveness

While ensuring high performance and high reliability, we rely on mature mass production technology and optimized supply chain management to effectively control product costs, providing users with cost-effective high-precision dual-axis MEMS gyroscopes. Compared with imported products of the same level, our product has obvious price advantages, and the performance can fully meet or even exceed the level of imported products; compared with domestic similar products, our product has more stable performance, more comprehensive error compensation and more thoughtful after-sales service. Choosing our product can help users reduce the overall cost of equipment, improve the market competitiveness of their products, and achieve a win-win situation of cost and performance.

1. Core Sensing Mechanism: Coriolis Effect

The fundamental working principle of the MEMS gyroscope is based on the Coriolis effect, which refers to the inertial force generated when a moving object moves in a rotating reference frame. For the high-precision dual-axis MEMS gyroscope, the core component is a micro resonant structure (such as a micro cantilever beam, micro mass block) fabricated on the MEMS chip through microfabrication technology. This micro resonant structure is designed to vibrate stably at a fixed natural frequency under the drive of the driving circuit - this is called the "driving mode".

When the carrier (equipped with the gyroscope) rotates around one of the horizontal axes, the micro resonant structure in the driving mode will be affected by the Coriolis force. The direction of the Coriolis force is perpendicular to both the direction of the micro structure's vibration and the direction of the carrier's rotation, which causes the micro structure to generate a secondary vibration perpendicular to the driving direction - this is called the "sensing mode". The amplitude of this secondary vibration is directly proportional to the angular rate of the carrier's rotation: the higher the angular rate, the larger the amplitude of the sensing mode vibration; the lower the angular rate, the smaller the amplitude. By detecting the amplitude and direction of the sensing mode vibration, the angular rate of the carrier's rotation around the corresponding axis can be accurately calculated.

2. Driving Control: Stable Vibration of Micro Resonant Structure

The driving control link is responsible for maintaining the micro resonant structure in a stable driving mode, which is the premise of accurate measurement. The driving circuit of the gyroscope outputs a high-frequency driving signal (matching the natural frequency of the micro resonant structure) to the driving electrode of the MEMS chip. Under the action of the electrostatic force generated by the driving signal, the micro resonant structure starts to vibrate periodically at a fixed amplitude and frequency.

To ensure the stability of the driving mode, the system adopts a closed-loop feedback control mechanism. The driving feedback sensor on the MEMS chip real-time detects the vibration amplitude and frequency of the micro structure, and feeds the data back to the digital signal processing (DSP) circuit. The DSP circuit adjusts the amplitude and frequency of the driving signal in real time according to the feedback data, compensating for the influence of environmental factors (such as temperature) and component aging on the vibration state. This closed-loop control ensures that the micro resonant structure maintains stable vibration parameters, laying a foundation for high-precision angular rate measurement.

3. Signal Detection & Processing: Converting Vibration into Measurable Electrical Signals

The signal detection link is used to capture the vibration signal of the micro resonant structure in the sensing mode and convert it into measurable electrical signals. The MEMS chip is equipped with sensing electrodes, which can detect the displacement change of the micro structure in the sensing mode (caused by the Coriolis force) through the change of capacitance (or piezoelectric effect). The capacitance change is extremely small (on the order of picofarads), so the signal picking-up circuit amplifies, filters and modulates the weak capacitance signal to convert it into a stable analog electrical signal.

The analog electrical signal is then transmitted to the digital signal processing (DSP) circuit, where it undergoes analog-to-digital conversion (ADC), demodulation, and noise reduction processing. The DSP circuit calculates the angular rate of the carrier's rotation according to the pre-calibrated proportional relationship between the electrical signal amplitude and the angular rate. At the same time, the DSP circuit integrates the data of the built-in temperature sensor, laying the foundation for subsequent temperature compensation.

Finally, the processed digital angular rate signal is output to the external control system through the RS-422 serial port (or other customized interfaces), providing real-time and reliable angular rate data for the carrier's attitude control, navigation and other systems.

4. Multi-dimensional Error Compensation: Ensuring High-precision Output

Due to the influence of microfabrication errors, environmental factors (temperature, vibration), and installation deviations, the raw measurement signal of the MEMS gyroscope will have certain errors. To achieve high-precision measurement, the product integrates a multi-dimensional error compensation system, which is realized through software algorithms and hardware calibration.

The key error compensation types include: ① Temperature compensation: The built-in temperature sensor real-time collects the ambient temperature, and the DSP circuit uses a pre-calibrated temperature compensation model to offset the error caused by temperature changes (temperature will affect the natural frequency of the micro resonant structure and the sensitivity of the sensing electrode); ② Installation misalignment angle compensation: Through factory calibration, the error caused by the deviation between the gyroscope's installation direction and the carrier's coordinate system is corrected; ③ Nonlinear compensation: A high-order fitting algorithm is used to eliminate the nonlinear deviation between the sensing signal amplitude and the actual angular rate; ④ Zero drift compensation: The zero drift (output signal when the angular rate is zero) is real-time monitored and compensated, ensuring the accuracy of static measurement.

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