The computer monitor stand's electric adjustment system achieves technological breakthroughs in both silent operation and precise positioning through the deep integration of sophisticated mechanical design and intelligent control algorithms. Its core logic relies on optimizing the power transmission path, reducing mechanical friction, and building a closed-loop control system using a sensor network and feedback mechanism. This ensures that the motor's drive process suppresses noise while achieving millimeter-level positioning accuracy.
Computer monitor stands generally utilize brushless DC motors or stepper motors as their power source. These motors utilize electronic commutation technology, replacing traditional brushless structures and fundamentally eliminating the high-frequency noise generated by friction between the brushes and the commutator. Furthermore, the motor's integrated high-precision encoder monitors the rotor position in real time. Combined with the driver chip's micro-control technology, this allows for micron-level step angles, ensuring smoother rotation. For example, when a user issues an adjustment command via a remote control or mobile app, the system first calculates the deviation between the target position and the current position. It then uses PWM speed regulation to control the motor speed in stages, preventing vibration and noise caused by excessive acceleration.
Another key aspect is the quiet design of the mechanical structure. Computer monitor stands often utilize a harmonic reducer or planetary gearbox in their drive systems. These structures achieve backlash-free transmission through the elastic deformation of the flexspline or the planetary motion of the gears, improving transmission efficiency while significantly reducing the impact noise during gear meshing. Furthermore, the noise-reducing strips embedded between the guide rails and sliders are made of polymer composite materials. Their elastic deformation absorbs small vibrations, preventing them from being transmitted to the overall structure of the stand. Some high-end stands also feature damping coatings on key components to further suppress resonant noise through energy dissipation.
Precise positioning relies on a closed-loop control system that integrates multiple sensors. Angle and displacement sensors integrated within the stand collect real-time data such as motor rotation angle, stand height, and horizontal displacement, feeding this information back to the central control unit. The control unit dynamically adjusts the motor output torque using a PID control algorithm to ensure stable movement. For example, when the user sets the monitor height to 120 cm, the system first verifies the current height using the displacement sensor, then calculates the required number of rotations. A current sensor also monitors the motor load to prevent positioning deviations caused by load variations.
To ensure accurate positioning under varying loads, the computer monitor stand also features adaptive adjustment. When the weight of the monitor changes, the system monitors the motor's output torque via a torque sensor and automatically adjusts control parameters. For example, when carrying a 27-inch monitor, the system increases the motor's output torque and prolongs the deceleration phase to ensure that the monitor does not experience minor displacement due to inertia when it stops. This adaptive capability allows the same stand to accommodate monitors ranging from 15 to 34 inches, while maintaining consistent positioning accuracy.
The coordinated optimization of silent operation and precise positioning is also reflected in motion trajectory planning. Modern intelligent stands utilize an S-curve acceleration algorithm to achieve smoother speed changes during startup, operation, and shutdown. Compared to traditional trapezoidal acceleration algorithms, the S-curve avoids vibration and noise caused by sudden speed changes by controlling the derivative of acceleration. Furthermore, the system automatically plans the optimal path based on the target position, reducing unnecessary rotations and further improving adjustment efficiency and quietness.
The computer monitor stand's electric adjustment system also features learning and memory capabilities. By recording user usage habits over time, the system automatically presets commonly used heights and angles, allowing for quick positioning to the target position the next time the user uses it. For example, a designer may frequently need to adjust their monitor to a standing height, while a programmer may prefer a specific angle when arranging multiple monitors. The system uses machine learning algorithms to optimize the adjustment path, making it easier to use.
From a user experience perspective, the computer monitor stand's motorized adjustment system offers both silent operation and precise positioning, truly enabling a flexible work experience where the "screen follows the user." Users no longer need to manually adjust the stand or endure the harsh noise of adjustment. With a simple touch of a button or a voice command, the monitor smoothly moves to the ideal position. This technological advancement not only improves work efficiency but also enhances ergonomics, protecting the health of users who frequently use monitors.
