10results about How to "Simple control scheme" patented technology

This application belongs to the field of wireless charging technology, specifically relating to a constant current and constant voltage wireless charging system and method based on a three-coil loosely coupled transformer, including an inverter circuit, a primary-side compensation circuit, a resonant circuit, a secondary-side compensation circuit, a rectifier circuit, and a filter capacitor; the resonant circuit has an anti-parallel coil structure, with the third coil located on the secondary side and a single coil on the primary side; its advantages are high misalignment tolerance, load-independent output, and high efficiency.

The application provides an energy storage circuit with an isolation function, which comprises a power supply, a first signal generation module, a chip and an energy storage module. The power supply outputs a first voltage, and the first signal generation module generates a first signal. Based on the first signal, the chip outputs a first driving signal. Based on a driving voltage output by the energy storage module, the chip outputs a second driving signal. The energy storage module receives the first driving signal, and based on the first driving signal, the energy storage module receives and stores the first voltage. Based on the first driving signal and the second driving signal, the energy storage module converts the first voltage into a second voltage, and the energy storage module stores the second voltage.

The present disclosure relates to a method and system for producing olefins by cracking heavy hydrocarbons, which comprises the following steps: S1, entering a gas-liquid separator for gas-liquid separation to obtain a first gas phase material and a first liquid phase material; and in the process of separation, introducing a separation aid into the gas-liquid separator to contact with the first gas phase material in countercurrent, so that the heavy components carried in the gas phase material are washed or condensed to obtain a second gas phase material; S2, making the second gas phase material enter the radiant section of a steam cracking furnace for cracking to obtain a cracking product containing olefins. The above technical solution can realize the production of olefins to a greater extent by a shorter process and smaller energy consumption.

The present application provides a user terminal device and a control method thereof. The user terminal device includes: an antenna for receiving a first network signal; a motor for driving the antenna to rotate; a driving chip for driving the motor so that the motor drives the antenna to rotate in a first direction or a second direction; a processing chip configured to: output a first pulse, the first pulse is used to control the driving chip so that the motor drives the antenna to rotate in a first direction; determine whether the motor is blocked in the process of driving the antenna to rotate in the first direction, and output a reversal signal when the motor is blocked, the reversal signal is used to control the motor to reverse through the driving chip so that the motor drives the antenna to rotate in the second direction; and output a preset number of second pulses, the second pulse is used to control the driving chip so that the motor drives the antenna to rotate in the second direction for one circle. The user terminal device provided by the present application can simplify the control scheme, reduce the design complexity and save costs.

The invention provides a method and a system for producing olefin by cracking wide-fraction hydrocarbon, which are characterized in that the wide-fraction hydrocarbon, primary diluted steam and a cooling medium are mixed and then enter a gas-liquid separator (7) to be mixed, and then first separation is performed to obtain a first gas-phase material and a first liquid-phase material; mixing the secondary diluted steam with a gas stripping aid to obtain a gas stripping medium, and enabling the gas stripping medium to enter a gas-liquid separator (7) to be in countercurrent contact with the first liquid-phase material to obtain a second gas-phase material and a second liquid-phase material; mixing the first gas-phase material with the second gas-phase material to obtain a third gas-phase material; the third gas-phase material is subjected to second heating and then enters a radiation section (5) of a steam cracking device to be subjected to steam cracking, and a product containing olefin is obtained. According to the method, the wide-fraction hydrocarbon can be flexibly used for directly cracking to produce the olefin, a pretreatment device arranged in a traditional oil refining device is greatly reduced, and the olefin is produced in the shortest process with low energy consumption to the maximum extent.

The present invention proposes an integrated intelligent closed-loop control method for an electromagnetic contactor, including an integrated drive circuit and an embedded control system, wherein the electromagnetic contactor is driven and controlled by an integrated drive circuit including an integrated power chip; the integrated power chip replaces the external current detection circuit with a SenseFET sensor that can accurately and real-timely provide lower tube source-drain current information; the embedded control system includes a system MCU, which collects coil voltage through an ADC module u coil , Current i coil And through the integral operation, it is converted into magnetic flux, which is used for the closed-loop control of constant flux in the starting stage; and the process control of the electromagnetic contactor is carried out through the timer module for the timing disconnection of the contactor, and the integrated half-bridge chip of the integrated power chip is controlled through the PWM output module. U 1. U 2 internal switch tube, thereby controlling the exciting voltage state at both ends of the contactor coil; the present invention can improve the integration of the control circuit, thereby improving the overall reliability of the intelligent contactor and reducing the hardware cost.

The invention discloses a control method and a control device of a resonant converter, a medium, a processor and a switching power supply, the resonant converter comprises a primary side inverter bridge arm, a secondary side rectifier switching tube of the resonant converter is an active switching tube, the control method of the resonant converter comprises the following steps: a voltage obtained by superposing an output voltage of a primary inverter bridge arm of the resonant converter and voltages at the two ends of a primary winding of a transformer of the resonant converter acts on a resonant branch, so that the voltages at the two ends of the resonant branch are higher than the output voltage of the primary inverter bridge arm of the resonant converter; and the gain adjustment of the resonant converter is realized. On the premise of ensuring the soft switching characteristics of the primary and secondary side switching tubes, a wider output voltage gain adjusting range can be realized.

The utility model relates to the field of dust collection machinery, in particular to a dust extrusion mechanism, a dust discharge mechanism with the dust extrusion mechanism and a dust remover with the dust extrusion mechanism. A dust extrusion mechanism comprises an end cover, a mounting seat and an end cover driver, the end cover is mounted on the mounting seat, the end cover driver drives the end cover to movably cover a discharge port or open the discharge port, and after the discharge port is covered, the extrusion force of an extrusion auger on materials is increased, so that the materials are extruded into blocks. The dust discharge mechanism comprises the dust extrusion mechanism and a dust collection barrel fixed on a support, the dust collection barrel is provided with a feed opening, and the feed opening is communicated with the feed opening. The utility model further discloses the dust remover with the dust extrusion mechanism. The extrusion degree of the dust is adjusted, so that the dust is extruded into blocks to be discharged, and secondary pollution to the environment due to the fact that the dust is sprayed out of the discharge port and diffused into the surrounding environment due to pressure is avoided or reduced.

The utility model discloses a voltage conversion circuit and a vehicle-mounted power supply, and relates to the technical field of electronic circuits. The voltage conversion circuit comprises a controller, a first conversion branch and a second conversion branch. The first conversion branch converts an alternating current power supply into a first direct current power supply; the first conversion branch comprises a rectification module, a signal output module, a transformer and a rectification wave-emitting module which are connected in sequence; the rectification module rectifies an AC power supply and then inputs the rectified AC power supply to the signal output module, so that the signal output module outputs a high-frequency signal to the transformer, and the rectification wave-emitting module rectifies the signal output by the transformer and then outputs a first DC power supply. The second conversion branch comprises a first winding; the first winding is coupled to a magnetic core of the transformer, so that the combination of the rectification wave-generating module and the second conversion branch converts the first direct-current power supply into a second direct-current power supply; the rectification wave-emitting module outputs a high-frequency signal to the transformer based on the first DC power supply. Through the mode, a common switch can be adopted to realize a voltage conversion function, and the cost is relatively low.

The application discloses an integrated seven-freedom-degree humanoid robot arm, the humanoid robot arm (1) comprises an upper arm module (2) and a forearm module (3), the upper arm module (2) is connected with the forearm module (3); the upper arm module (2) comprises a shoulder joint two-freedom-degree integrated module (4), an upper arm rotation freedom degree and electric adjustment installation module (5), an upper arm main control core module (6) and an elbow joint integrated module (7); the forearm module (3) comprises a forearm wrist rotating module (27), a wrist connecting rod system, a wrist turning module and a humanoid shell. The application selects a proper motor rotor and a harmonic reducer, more reasonably and compactly arranges the drivers of the relatively key wrist joint and the shoulder joint, so that the system is more compact, and has proper joint limit angles. The application provides a layout configuration suitable for the humanoid robot arm, so that the system is more reasonable and natural in layout under the premise of ensuring that strength and torque performance are stable and reliable.