10 results about "Loop start" patented technology

The embodiment of the application provides a control method and device of a rod wire loop device and a storage medium, the control method comprises the following steps: determining a loop starting time of the loop device according to a rolling piece running speed of a target rolling piece and a downstream rack biting time; determining a real-time loop height value according to the loop starting time, a loop starting initial height, a steady-state target loop height and a ramp rising time, and controlling the loop device to start the loop according to the real-time loop height value; acquiring a real loop height value of the loop device, and correcting an upstream rack running speed according to the real loop height value and the real-time loop height value; and when a tail of the rolling piece leaves the upstream rack, the loop device is controlled to fall back according to a tail loop closing target height. The method realizes adaptive control of the rod wire loop.

The invention discloses a data processing method based on a data medium table, electronic equipment and a readable storage medium. The method comprises the steps of obtaining a to-be-executed business task; the business task is constructed based on nodes selected from the data table, the business task comprises at least one loop body and conventional nodes outside the loop body, the loop body comprises a loop starting point, a loop ending point and processing nodes between the loop starting point and the loop ending point, and the processing nodes in the loop body process data according to a loop mode of the loop body; executing the business task to obtain a node operation record corresponding to each node in the business task; the node operation record comprises a node type of the node and a processing result during each time of data processing, and when the node type is a node in a loop body, the node operation record further comprises loop information of the loop body; and when at least part of the processing results are failure, re-executing at least part of the nodes in the business task based on the node operation records corresponding to the nodes in the business task. According to the scheme, the data processing efficiency and reliability can be improved.

A kind of substation secondary system based on three buses, all secondary devices in which are divided into current module, voltage module, non-electric quantity parameter module, switching value module, multi-loop starting module, multi-loop opening module, multi-loop reclosing module, multi-loop closing module according to function, each module is connected with system bus through multi-path analog switch, multi-loop integration is carried out to each module, for the part that secondary device needs to contact with primary device, all adopt wireless contact.The present application carries out large-scale high integration to all secondary systems of whole station using the integration control technology of '' one to many '', and greatly compresses the number of various secondary devices in original substation.The communication mode between primary system and secondary system is changed into wireless wide area network communication mode, so that it can be removed from existing substation, and further reduce the floor space of substation.

The present application relates to the technical field of energy storage, in particular to a network-constructed double-fed flywheel energy storage unit control loop starting and grid-connection method and system, the method comprising: starting a grid-side converter, including pre-charging a DC capacitor, and starting the grid-side converter control loop in turn according to a preset timing sequence: first starting a phase-locked loop, then starting a current loop, and finally synchronously starting a DC voltage loop and a reactive power loop; three-phase short-circuiting a double-fed motor stator, starting the flywheel and accelerating to a set speed by using a machine-side converter phase-locked loop and a network-constructed current control loop; opening the double-fed motor stator, starting the machine-side network-constructed control loop according to the timing sequence, and connecting to an AC power grid. Through the method and system, the flywheel can be directly started under network-constructed control and connected to the power grid, which is suitable for operation under weak power grid conditions and is more conducive to stable operation of the system.

The application discloses a kind of phase-locked loop frequency calibration device and method, it is related to the frequency calibration field of phase-locked loop, in which process detector sends frequency control word initial value to automatic frequency calibrator;Automatic frequency calibrator sends reset1=1 to counter according to frequency control word initial value;Phase-locked loop starts locking according to frequency control word initial value;Lock detection circuit detects the phase detection signal output by phase-locked loop after locking, and when phase detection signal is not in variation, output Lock_Done=1;Counter carries out and logic with Lock_Done with reset1, and resets, starts counting;After automatic frequency calibrator counts setting time, according to the read-back instruction of counter and the Fast signal and Slow signal determined by comparator according to the output voltage of phase-locked loop, determine calibration word.The application can reduce the error caused by phase-locked loop frequency calibration process and reduce calibration duration.

This application provides a hardware-in-the-loop (HIL) testing method and apparatus based on infinite data loop playback, comprising: acquiring a data sequence group for hardware-in-the-loop testing; determining the warm-up window, data offset time, and loop start time of the loop playback sequence to be constructed based on the data sequence group and the hardware-in-the-loop testing system, wherein the loop start time is the timestamp of the last frame data of the last data sequence in the data sequence group that has been replayed; constructing a loop playback sequence based at least on the data sequence group, the warm-up window of the loop playback sequence, the data offset time, and the loop start time; inputting the loop playback sequence into the hardware-in-the-loop testing system for data loop testing processing of the domain controller under test, and obtaining test results. This solves the problem that existing HIL testing data backfeeding schemes have limited backfeeding data volume, which cannot meet the requirements of long-term continuous testing.

A memory device includes memory cells connected to word lines. The memory cell is disposed in the memory hole and is configured to maintain a threshold voltage corresponding to a data state. The memory holes are organized into rows grouped in a string comprising each of a plurality of blocks. A control component is configured to acquire a smart verify program voltage by programming the memory cells connected to one of the word lines and associated with one of the strings in a smart verify operation, the smart verify operation including a plurality of smart verify loops starting with an initial program voltage. The initial program voltage is adjusted based on a cycling condition of the memory cell. The control component is further configured to program at least some of the memory cells connected to the word line in a program operation using the smart verify program voltage based on the adjusted initial program voltage.

The invention discloses a configurable delay circuit, and relates to the technical field of asynchronous circuit design. The configurable delay circuit comprises a cycle starting module, a cycle module and a cycle judgment module, and the cycle starting module is used for receiving a to-be-delayed signal and outputting a cycle starting signal based on the to-be-delayed signal; the circulation module is used for outputting a circulation judgment starting signal based on the circulation starting signal; the cycle judgment module is used for receiving the delay period signal, determining the number of times of delay based on the delay period signal, delaying the cycle judgment starting signal based on the number of times of delay and then outputting a cycle ending judgment signal; the circulation module is also used for outputting a circulation response signal based on the circulation ending judgment signal; and the cycle starting module is also used for resetting the cycle starting signal based on the cycle response signal, overturning the current signal and outputting a delayed signal. According to the circuit, the delay time can be dynamically adjusted, and the complexity of the circuit structure can be reduced.

This invention discloses a collaborative communication and safety control method and system for a heterogeneous robot controller. The method includes the following steps: deploying a communication middleware based on Micro XRCE-DDS on an MCU module, configuring Quality of Service (QoS) policies for heartbeat, power status, and emergency stop messages respectively; during system power-on, establishing a dual-channel closed-loop start-up control mechanism combining hardware start-up gating and software readiness confirmation; during system operation, the MCU module collects the bus voltage, motor phase current, and motor speed parameters of the joint modules in real time, and when an emergency stop trigger signal is received, selects different deceleration strategies to execute braking control based on the parameters; and achieves physical-level safety isolation in the event of a main control module failure. This invention solves the technical problems of high communication latency, unreliable state synchronization, chaotic start-up timing, and delayed fault response in traditional communication methods.

The invention relates to the technical field of energy storage, in particular to a control loop starting and grid-connected method and system for a grid-forming type doubly-fed flywheel energy storage unit, and the method comprises the steps: starting a grid-side converter, including pre-charging a direct-current capacitor, and sequentially starting a control loop of the grid-side converter according to a preset time sequence: firstly starting a phase-locked loop, then starting a current loop, and starting the phase-locked loop; finally, the direct-current voltage loop and the reactive loop are synchronously started; the stator of the doubly-fed motor is in three-phase short circuit, and a machine-side converter phase-locked loop and a network-forming current control loop are adopted to start a flywheel and accelerate to a set rotating speed; the stator of the doubly-fed motor is open-circuited, and a machine-side network-constructing control loop is started according to a time sequence and is connected to an alternating-current power grid. Through the method and the system, the flywheel can be directly started and accessed to the power grid under the control of a constructed network, the method is suitable for operation under a weak power grid working condition, and stable operation of the system is facilitated.