5results about How to "Shorten start time" patented technology

The invention relates to a startup catalyst for a catalytic cracking unit and a preparation method and application thereof, the startup catalyst contains 15-95% of a first catalyst and 5-85% of a second catalyst by taking the dry basis weight of the startup catalyst as a reference, and the content of the first catalyst is 5-95%, and the content of the second catalyst is 5-85%. Wherein the main active component of the second catalyst is a modified small-grain Y-type molecular sieve material. The preparation method of the startup catalyst comprises the step of physically and uniformly mixing the first catalyst and the second catalyst. The start-up catalyst has excellent physical and chemical properties, can be used in a start-up stage of a catalytic cracking device, can realize efficient and stable start-up of the device, and can also be used in industrial scenes such as start-up after shutdown maintenance of the device, rapid replacement after poising agent poisoning, supplement during abnormal agent running and the like.

The application discloses a circuit breaker mechanical characteristic test and diagnosis algorithm verification device with a waveform editing function, which comprises a signal acquisition and communication module, a man-machine interaction interface, a drag-type waveform editing unit, a waveform feature self-adaptive reconstruction unit and a format storage and reading unit. The signal acquisition and communication module synchronously acquires four types of key signal waveforms during circuit breaker opening and closing operations; through graphical operation of the man-machine interaction interface, a user can drag and edit waveform feature points, the waveform feature self-adaptive reconstruction unit generates a corrected waveform according to the adjusted feature points, the format storage and reading unit stores the adjusted waveform into a standard format file, and the signal acquisition and communication module sends the standard format file to an external diagnosis system. The application integrates mechanical characteristic test and diagnosis algorithm verification functions, and solves technical problems, such as dependence of diagnosis algorithm verification on field test data, insufficient fault sample coverage and non-reproducibility in the prior art.

The invention relates to the technical field of automotive electronics, in particular to a point cloud pedestrian recognition and tracking method based on speed fluctuation characteristics, a sensing system and a vehicle, and the method comprises the following specific steps: S1, data acquisition and preprocessing; s2, estimating the overall movement speed of the target; s3, speed fluctuation feature extraction; s4, target classification based on multiple features; s5, an improved tracking management strategy; s6, performing tracking management on the classified targets; the sensing system comprises a memory and a processor, computer programs are stored in the memory, and the processor executes the computer programs and instructions of the computer programs; the vehicle is specifically a vehicle carrying the sensing system. A'micro-motion target 'is used as an independent tracking object, so that the problem that a tracking trajectory is lost and then restarted due to the fact that pedestrians are momentarily static is effectively avoided, a smoother and more continuous trajectory is formed, and more reliable information is provided for a downstream prediction and decision-making module.

This invention discloses a starter voltage build-up control method, device, and system based on power boundary analysis and compensation, belonging to the field of motor control. The method includes: acquiring the current parameters of the starter during the voltage build-up process, discretizing them to obtain the current time... k The rate of change of current; based on the first voltage boundary and the second voltage boundary, within the preset current safety margin, the compensation value of the current dynamic component is calculated; the maximum current change in the current switching cycle is calculated based on the compensation value of the current dynamic component; based on the maximum current change... k Current rate compensation is performed based on the rate of change of current at any given time. Key factors such as the rate of change of current, motor speed, and load characteristics are considered to achieve rapid and stable voltage establishment under different speed conditions.