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

This application provides a power supply system and grid-connected control method. The power supply system includes a power source, an inverter, a transformer, a power station acquisition module, and an inverter acquisition and control circuit. The power station acquisition module acquires the amplitude and frequency of the grid-connected voltage at the grid connection point and obtains a power station power adjustment signal based on the amplitude and frequency of the grid-connected voltage. The inverter acquisition and control circuit acquires the amplitude and frequency of the inverter's output voltage and obtains an inverter power adjustment signal based on the amplitude and frequency of the output voltage. Based on the power station power adjustment signal and the inverter power adjustment signal, the circuit controls the inverter to output a target output power. Using this application, the output power of the inverter can be adjusted through the power station acquisition module and the inverter acquisition and control circuit. The structure is simple, the control method is convenient, the control accuracy and regulation efficiency are improved, the control time is reduced, and the control cost is lowered.

This invention relates to the field of grinding control, and more particularly to a method and system for balanced distribution control of grinding force in dual-sided synchronous feed grinding. The method includes: dividing the grinding disc into multiple sub-regions according to multiple preset directions, and obtaining the vibration sequence of each sub-region; obtaining a spectrum diagram and vibration energy of each frequency band based on the vibration sequence to obtain the direct contact degree; performing differential processing on the vibration sequence to obtain a vibration differential sequence, and obtaining the propagation contact degree based on the wave similarity; fusing the direct contact degree and the propagation contact degree to obtain the feed contact degree, and obtaining a basic adjustment coefficient; obtaining a correction coefficient based on the energy differential sequence corresponding to the vibration sub-sequence, and combining it with the basic adjustment coefficient to obtain a feed adjustment coefficient; calculating the target feed amount based on the feed adjustment coefficient and the feed amount sequence to complete the balanced distribution control of grinding force in dual-sided synchronous feed grinding. This invention can improve the uniformity of grinding force distribution and machining stability during the grinding process.

This invention belongs to the field of bulldozer technology and provides a safety control method and system for bulldozer escalators. It controls the escalator's ascent or descent when the following conditions are met simultaneously: the bulldozer is stopped, the bulldozer is in zero gear, the escalator limit switch operation signal and safety judgment signal are mutually exclusive, and the circuit is normal. The system also considers the escalator's descent during bulldozer deceleration. It considers whether there are simultaneous escalator ascent and descent switch press signals, whether the bulldozer is stopped, whether the bulldozer is in P gear, whether the escalator limit switch operation signal and safety judgment signal are mutually exclusive, and whether the circuit is normal, thus maximizing the safety of ascent and descent control. During escalator descent control, it achieves the goal of simultaneously stopping the engine, opening the door, and escalator descent, shortening control time and improving operator efficiency while ensuring safety.

The utility model provides a circuit for driving a direct current electromagnet to act by an optical coupler and an IGBT in an ATS. The circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, an optical coupler U1, a non-polar capacitor C1, a non-polar capacitor C2, a diode D1, a voltage stabilizing diode D2, an NPN triode Q1 and an IGBT Q2. An INPUT end drives an NPN triode Q1, an optical coupler U1, an IGBT Q2 and a voltage stabilizing diode D2 to work by receiving a high-level driving signal and a low-level driving signal, so that an electromagnet acts; and the resistor R4, the non-polar capacitor C2 and the optical coupler U1 form a protection loop to protect the IGBT Q2 from being burnt out by overvoltage. According to the utility model, the single-chip microcomputer sends out a control signal to control the electronic device to drive the electromagnet to act, and through efficient electromagnet action driving, compared with a relay and other mechanical devices, the safety is improved, the control time is greatly shortened, and the overall service life of the electromagnet ATS is prolonged.

The invention belongs to the technical field of power system regulation and control, and particularly relates to a regulation and control method and system for power balance of a distribution network system. The method comprises the steps that grid division is carried out on a distribution network system, each grid comprises a power supply and a load, the power supply comprises a new energy power supply and a traditional power supply, and the load comprises a flexible load; when the total power of the power supply and the total power of the load in the grid are unbalanced, regulating and controlling the power of the flexible load or the power of the new energy power supply in the grid in situ according to the total power of the power supply and the total power of the load in the grid; if the grid is still unbalanced after regulation and control, the distribution network monitoring system is used for regulating and controlling the traditional power supply power in the grid, so that the total power supply power and the total load power in each grid are balanced, the regulation and control time is shortened, the communication and operation pressure of the distribution monitoring system is reduced, the source load power in the grid can be quickly balanced, and the power of the whole distribution system is further quickly balanced; electricity utilization requirements of different types of loads are met, and overall reliable operation of a distribution network system is guaranteed.