11 results about "Excitation controller" patented technology

The embodiment of the invention relates to the technical field of induction pumps, in particular to a high-temperature liquid metal electromagnetic pump which comprises a main body, an inductor, a temperature sensor and an excitation controller. The main body is hermetically connected with a conveying piece for conveying high-temperature liquid metal; the inductor is arranged to enable the high-temperature liquid metal in the main body to generate induction current and enable the high-temperature liquid metal to generate pressure difference at different positions of the main body, so that the high-temperature liquid metal can flow at different positions; the temperature sensor monitors the temperature in the main body; the excitation controller is set to be capable of adjusting the power supply voltage and frequency of the inductor; the main body is arranged to be capable of preventing heat transfer of the high-temperature liquid metal to the inductor. The electromagnetic pump can meet the sealing requirement of high-temperature liquid metal conveying; flow control is facilitated, and the requirement for controllable conveying of high-temperature liquid metal in the molten salt electrolysis dry-method technological process is met; the failure of the high-temperature liquid metal electromagnetic pump can be avoided, and the operation stability and reliability of the electromagnetic pump can be improved.

The invention discloses a rail grinding wagon power seamless conversion control method. The method comprises the following steps that S1, an IO module collects a power supply mode signal; s2) in a power supply mode of the generator set, after the generator set is started, the main control module issues an uncontrollably rectified intermediate direct current target voltage Ud and an excitation allowing signal to the excitation controller through logical operation; the excitation controller uses the issued intermediate direct current rated voltage Ud as a target voltage to adjust the excitation current of the generator set so as to ensure the stability of the intermediate direct current voltage; and S3) in a contact network power supply mode, after the pantograph rises and the vacuum circuit breaker of the network side cabinet is closed, the traction control unit controls four-quadrant rectification of the traction auxiliary converter to adjust the duty ratio by taking the intermediate direct current rated voltage Ud as the target voltage so as to ensure the stability of the intermediate direct current voltage. According to the invention, the technical problem of ensuring the power and operation continuity in the overhead line system split-phase region can be solved.

This application discloses a remote excitation control method, apparatus, and equipment for seismic exploration based on a cluster approach, belonging to the field of oil and gas seismic exploration. The method includes: in response to remote control of multiple seismic exploration projects, sending a working instruction to the excitation controller of each of the multiple seismic exploration projects; for any seismic exploration project, in response to receiving excitation preparation information from the excitation controller of that project, determining the shot point to be excited and the excitation time of the shot point corresponding to the excitation preparation information based on the excitation rules of the seismic exploration project; and sending an excitation instruction to the excitation controller. The above technical solution realizes remote centralized excitation control of multiple seismic exploration projects in different regions, greatly reducing the number of operators required and their labor intensity, and effectively improving the overall construction efficiency of multiple seismic exploration projects.

The application discloses a kind of suspended tunnel structure wave flow test device, comprising: test pool, wave and current generating device, plastic net wave-absorbing device, vibrating table, extension platform, excitation controller, suspended pipe body model, anchor cable and hydrodynamic test system.The application can apply controllable multi-point excitation, and can also test the hydrodynamic response of suspended tunnel to simulated earthquake simultaneously, and can adjust the excitation size, position and range according to actual model requirements, so as to realize response analysis and coordinated control under the combined action of multi-point different excitation earthquake and wave flow.

Various examples are provided related to bimodal electron paramagnetic resonance (EPR). In one example, a bimodal resonator includes a detection coil; first and second excitation coils, where the excitation coils are non-parallel separated by a fixed angle; and excitation controllers coupled to the first and second excitation coils. The excitation controllers can adjust radio frequency (RF) fields generated by the first and second excitation coils to produce a resonator field substantially parallel with the detection coil. In another example, a method including generating a first RF field by exciting the first excitation coil; generating a second RF field by exciting the second excitation coil; and producing a resonator field substantially parallel with a detection coil of the bimodal resonator by adjusting the RE field of the first excitation coil, the RF filed of the second excitation coil, or both.

The present application relates to the technical field of power repair and emergency power supply, and particularly relates to a diesel generator set group parallel operation control method and system based on fuzzy PID control. Real-time operation parameters of the diesel generator set are acquired to construct a fuzzy PID control input vector; a mapping relationship table between the control input vector and a preset parallel operation fuzzy PID control rule is established; a weighted average algorithm is used for defuzzy calculation to obtain a real-time PID parameter correction amount and correct the current PID control parameter; after voltage leveling, frequency adjustment and phase calibration of each unit based on automatic quasi-synchronous parallel operation logic, the units are connected in parallel to construct a parallel control group; power distribution is performed on the speed regulator and excitation controller of each unit according to the real-time fuzzy PID control parameter, and cyclic adjustment is performed until the error converges. The problems of poor parallel operation stability and uneven power distribution of the diesel generator set group caused by fixed traditional PID control parameters are solved, intelligent control of multi-unit parallel operation is realized, and the system operation stability and efficiency are improved.

The invention discloses a power seamless conversion control device and system and a steel rail grinding wagon. An excitation controller is connected with a main control module, the main control module is connected with an IO module, and a traction control unit is connected with the main control module. The IO module collects a power supply mode signal, and when in a generator set power supply mode, after a generator set is started, the master control module issues an uncontrollably rectified intermediate direct current target voltage and an excitation allowing signal to the excitation controller through logical operation. And the excitation controller regulates the excitation current of the generator set by taking the issued intermediate direct current rated voltage as a target voltage so as to ensure that the intermediate direct current voltage is stable. When the system is in a contact network power supply mode, a pantograph rises, and a network side cabinet vacuum circuit breaker is closed, the traction control unit controls four-quadrant rectification of the traction auxiliary converter to adjust the duty ratio by taking an intermediate direct current rated voltage as a target voltage so as to ensure that the intermediate direct current voltage is stable. According to the invention, the technical problem of ensuring the power and operation continuity in the overhead line system split-phase region can be solved.

The present application relates to a kind of multifunctional coal cake rammer mechanism and its ramming method, belong to ramming equipment technical field, specifically including hammer rod and the ramming hammer plate installed in the bottom of hammer rod, hammer rod includes two I-beams, the bottom of two I-beams is fixed on ramming hammer plate, the top of two I-beams is fixed with upper fixed plate, a plurality of shock absorbers are installed between two I-beams, a plurality of vibrating rods are installed on shock absorber, upper fixed plate and ramming hammer plate are all provided with a plurality of vibrating rod holes, the bottom of vibrating rod is located in the vibrating rod hole of ramming hammer plate, the top of vibrating rod passes through the vibrating rod hole of upper fixed plate, and top is equipped with lifting control plate, lifting control plate is equipped with lifting mechanism, vibrating rod is connected with excitation controller by wire, the present application is simple in structure, stamping, extrusion and vibration are integrated, and the density of coal cake can be effectively provided.

The utility model relates to the technical field of microcomputer excitation devices, in particular to a low-voltage unit microcomputer excitation device. The microcomputer excitation controller comprises a microcomputer excitation controller body, the back of the microcomputer excitation controller body is fixedly connected with a wiring end and a wire arrangement assembly, one side of the microcomputer excitation controller body is provided with an auxiliary installation assembly, and the wire arrangement assembly comprises an installation plate fixedly connected to the back of the microcomputer excitation controller body. A first arrangement block is fixedly connected to the front face of the mounting plate, a fixing column is fixedly connected to the front face of the first arrangement block, a protrusion is arranged on the arc face of the fixing column, and a second arrangement block is arranged on the front face of the first arrangement block. The wires are placed in the semicircular grooves in the first arrangement blocks on the mounting plate, then the second arrangement blocks are dragged to be clamped to the fixing columns, and therefore the wires are fixed, and the wires are arranged as far as possible.

The invention belongs to the technical field of aviation power system controller testing, and particularly relates to a starter generator system operation data and control parameter high-reliability recording method, in an excitation controller, a data acquisition system acquires analog quantity data of voltage and current; configuring the magnetoresistive random access memory to work in an SPI mode 0, executing a write enable command on the magnetoresistive random access memory, and setting a write enable latch bit; executing a write state register command on the magnetoresistive random access memory; in the FIFO mode, the analog quantity data loaded in the FIFO is sent and displayed by the shift register; and comparing the displayed data with the actual data, and when the displayed data is the same as the actual data, judging that the function of the controller is intact. According to the invention, a communication link can ensure high anti-interference capability and long-distance transmission reliability by utilizing differential transmission on a hardware level, and orderly sending and receiving of data are realized through a serial communication protocol on a software level.

This utility model provides a microcomputer excitation device with current regulation function, belonging to the technical field of microcomputer excitation devices. The utility model includes an excitation controller body. Heat dissipation holes are evenly distributed on both sides of the outer surface of the excitation controller body. A terminal block is fixedly mounted on one side of the excitation controller body by screws. Several terminals are evenly distributed on one side of the terminal block. Fixing devices are provided on the sides of two terminal blocks that are far apart. This utility model uses a pressure plate and a base plate to compress and fix the circuit, so that when the circuit is subjected to external force, the connection between the circuit and the pressure plate and the base plate is subjected to tension first, and only then is the connection between the circuit and the terminal subjected to tension. This reduces the fixing pressure of the screws on the circuit, helps prevent the circuit from detaching from the terminal under external force, and protects the connection between the circuit and the terminal, facilitating the normal operation of the microcomputer excitation device.