8 results about "High speed control" patented technology

The application provides a motor state estimation method, a motor controller and an electric drive assembly, and relates to the technical field of motors.The motor state estimation method comprises the following steps: determining a current error according to a current observation value and a current feedback value of a motor, performing closed-loop control according to the current error to determine a back electromotive force deviation, and performing closed-loop control according to the back electromotive force deviation to determine a rotor speed and a position angle of the motor.Through the establishment of a current error feedback adjustment mechanism, the back electromotive force observation is more robust, the rotor speed and the angle are further controlled by using the back electromotive force deviation, the system state is indirectly deduced through the system output error, the closed-loop estimation mechanism is formed, the estimation value can be continuously corrected through the error negative feedback mechanism, the field orientation is more accurate, the high-speed control without a position sensor is realized, and the control performance, stability and dynamic response capability of the motor under high-speed or variable load conditions are improved.

This invention discloses a switching time-modulated harmonic direction finding device and method, belonging to the field of radio frequency signal direction finding technology. It includes a radio frequency switching unit, a control unit, an ADC acquisition module, and a digital processing module. The radio frequency switching unit achieves signal time modulation through periodic switching of PIN diodes, coupled with a compensation network to optimize impedance matching and isolation performance. The control unit uses a high-speed comparator to output a stable, high-speed control signal. The ADC acquisition module performs analog-to-digital conversion. The digital processing module recovers the equivalent direction finding signal using a signal recovery algorithm based on the time-modulated sequence and estimates the direction of arrival based on a multiple signal classification algorithm (MUSIC). The method includes signal modulation, analog-to-digital conversion, equivalent signal recovery, and direction estimation steps. This invention eliminates the need for high-precision phase shifters and multi-channel parallel complete receiving links, simplifying the system structure and reducing hardware costs while retaining array direction finding capabilities. It is suitable for radar, communication, and other scenarios, balancing hardware simplification and direction finding accuracy.

The application discloses a kind of self-adapting mechanical arm grabbing method based on visual servoing, and the grabbing method includes S1, rough approach stage, obtains the point cloud and image data of work scene, carries out preliminary identification and pose estimation to target object;S2, initial trajectory planning, utilizes five Bezier curves to carry out initial trajectory planning;S3, fine servo stage, mechanical arm moves along initial trajectory planning, and adopts visual servo closed-loop control;S4, blind grabbing stage, when the end of mechanical arm approaches target object and causes partial or complete loss of visual feature, the system starts multimodal fusion control to complete grabbing.The application divides the grabbing process into four stages of rough approach, trajectory planning, fine servo and blind grabbing, and uses different control strategies for the characteristics of each stage, uses prediction filter to correct the error caused by visual delay in advance, smoothly connects low-speed vision and high-speed control, and improves dynamic grabbing precision.

This invention relates to a silicon MOS quantum bit device and its fabrication method. The silicon MOS quantum bit device employs a dual-layer gate architecture combining a polysilicon global gate and a metal local gate: the first layer is a polysilicon global gate, covering most of the active region of the quantum dot, enabling potential shielding and static coarse tuning; the second layer is a localized metal fine gate, with each metal gate electrode corresponding to a single quantum dot, enabling near-field fine tuning and high-speed gating. The combination of the polysilicon global gate and the metal local gate can reduce charge noise and improve coherence time while achieving precise and high-speed control of the quantum dot. The disclosed method is based on mature CMOS process technology, suitable for reproducible manufacturing on large-size wafers, and can significantly improve the proportion of usable quantum bits and device yield.

The present application relates to the technical field of automatic control of chemical separation equipment, and particularly relates to an automatic control method for a high-cycle batch four-bromine bisphenol A centrifugal separation process. Data in a feed pipe is collected, corresponding control signals are output until filter cake load feedback data reaches a set threshold value; feed parameters are collected, a dynamic dewatering control algorithm is used to control mother liquor turbidity to be lower than a set threshold value; material liquid temperature and mother liquor turbidity data are collected, two control signals are formed by an intelligent spraying control algorithm, and are output to two gradient spraying pumps; a constant maximum speed control signal is output to a centrifuge main motor driver, filter cake humidity feedback is collected, and when humidity feedback data reaches a set drying target value, a discharge instruction is output and the control process is completed. The present application collects multi-dimensional data of material state and separation effect in real time through an online sensor network, and achieves the technical effect that even if feed conditions fluctuate, the excellent stability of batch product quality can be ensured.

The application discloses a laser coarse-precision integrated tracking control method and system, and belongs to the technical field of laser communication control and adjustment. A light beam direction vector is constructed in a three-dimensional space, and inverse rotation operation is carried out in combination with a current turntable attitude, so that camera errors can be uniformly returned to an initial base coordinate system in any attitude, thereby realizing geometric consistency calculation and dynamic decoupling control of coarse tracking and precision tracking. The coarse tracking and the precision tracking adopt the same line-of-sight vector modeling method, the algorithm structure is unified, through the inverse rotation operation, the errors are always returned to the initial base coordinate system, the coupling influence caused by the change of the turntable attitude is eliminated, the mirror compensation angle is directly deducted on the line-of-sight angle level, the control superposition conflict in the traditional double-loop structure is avoided, under the small-angle approximation, only matrix multiplication and arctangent operation are needed, and the application is suitable for embedded high-speed control systems, and the turntable only tracks low-frequency residual errors, and high-frequency jitter of the mirror is avoided from being transmitted to the mechanical structure.

This invention discloses a low-voltage standby automatic transfer control method and device compatible with photovoltaic (PV) and energy storage, applied to a primary / standby power switching system. The method includes: at the moment of a mains power failure, utilizing an integrated hybrid inverter module, before the ATS physically disconnects the mains power, dynamically buffering the load through energy storage batteries to compensate for the difference between the power required by the load and the actual output power of the PV, thereby maintaining the stability of the load-side voltage and frequency; seamlessly switching from mains power to a combined PV and energy storage power supply mode without affecting the power quality on the load side; and after the switch is completed, dynamically adjusting the discharge depth and rate of the energy storage based on real-time light intensity and load changes using an adaptive impedance matching algorithm. This invention, by setting up a hybrid inverter integrating a high-speed DSP controller and a voltage source inverter topology, enables smooth, efficient, and seamless switching and coordinated power supply between the grid, PV, energy storage, and load during automatic grid switching.

This utility model relates to the field of speed control device technology, specifically to an integrated right-angle servo speed control assembly, including a hexagonal bolt and a speed control component. The speed control component includes a servo motor, a right-angle steering gear, and a drive gear. A flat key is provided on the outer side of the output shaft of the right-angle steering gear, and a threaded hole is provided on the inner side of the output shaft. A keyway is provided on the inner side of the drive gear. The servo motor drives the seed distributor to move, thereby sowing seeds on farmland. This utility model uses a servo motor as a power source. The servo motor has good speed control performance and relatively high speed control accuracy, which can meet the precise speed requirements of different application scenarios. It solves the problem that existing agricultural machinery uses stepper motors to power the seed distributor, resulting in low accuracy in traveling on uneven farmland, leading to large sowing errors and difficulty in meeting sowing requirements.