55results about How to "Realize full digital control" patented technology

This invention discloses a kind of numerical control device which consists of CPU module, switch module, power amplification module, and communication module. It could control Magnetic Suspended CMG servo system with high degree of accuracy. Data from the servo-actuator such as current, rotate speed and position signal was obtained by interface circuit and transported to CPU module; controlled quantity was created by operation to modulate the PWM; PWM with certain duty ratio was isolated and transported to the power amplification module to drive electric engine. Whole numeralization, integration, and high degree of accuracy control in CMG servosystem was realized in this invention.

The invention provides a multifunctional welding system of an underwater welding robot. The system comprises an arc welding robot interface, a digital arc welding inverter power supply, a diving wire feeder, a special welding torch for the robot, a miniature drainage cover, a compressed gas device and a protection gas device. The arc welding robot interface, the digital arc welding inverter power supply, the diving wire feeder and the special welding torch for the robot are sequentially connected; the arc welding robot interface with one end connected with the robot is connected with the diving wire feeder and respectively connected with the compressed gas device and the protection gas device; the special welding torch for the robot is installed on the robot and connected with the miniature drainage cover, and one end of the special welding torch for the robot is connected with an arc load; the compressed gas device is connected with the miniature drainage cover, and the protection gas device is connected with the diving wire feeder. The welding system can automatically adapt to the characteristics of an underwater welding arc in the welding process, a stable welding power supply-underwater arc system can be established, and then high-quality underwater robot welding can be achieved.

The invention relates to a digital hydraulic control valve, and belongs to the technical field of hydraulic driving and controlling. The digital hydraulic control valve comprises five groups of flow control units which are same in structure. Each flow control unit is composed of connecting of eight sets of electro-magnetic switch valves with throttling openings in parallel. The drift diameters of the electro-magnetic switch valves are totally same. The throttling areas of the throttling openings are coded by adopting the Fibonacci sequence. By controlling the combining state of electro-magnets of the electro-magnetic switch valves, the control over the output flow (the size and the direction) and the pressure can be achieved. The resolution ratio and the maximum flow of the valves can be confirmed according to the actual needs. The digital hydraulic control valve is formed by the regular electro-magnetic switch valves and the throttling openings, the structure is simple, the cost is low, the advantages of the switch valves are continued, the reliability is high, the anti-pollution capacity is strong, the all-digital control is achieved, multiple control modes and working modes are achieved, the control freedom degree is high, the flexibility is high, the fault diagnosis is easy to carry out, and the great fault-tolerant capability is achieved.

The invention discloses a full-digital dual-inverter alternating magnetic control arc generation device, which comprises a magnetic control arc excitation power supply and an excitation coil, wherein the magnetic control arc excitation power supply consists of a dual-inverter main circuit and a full-digital control system; the dual-inverter main circuit is formed by orderly connecting a single-phase rectifying and filtering module, a primary high-frequency inverter module, a transformer rectifier module and a secondary inverter module which access a single-phase alternating current input power supply; the full-digital control system is formed by interconnecting an abnormity detection and protection module, a sampling detection module, an ARM microprocessor system, a primary high-frequency driving module and a secondary driving module; and the excitation coil mainly comprises a carbon steel pipe, a plurality of strands of lacquered wires, a fixed bracket and the like. Full-digital control on the dual-inverter alternating magnetic control arc generation device can be realized, so the device has better consistency, dynamic response performance, good process adaptability, high energy conversion efficiency and strong expandability.

The invention is a submerged arc welding machine dual digital signal processor control system. The power source external characteristic module consists of primary digital signal processor DSP and submerged arc welding machine main circuit, primary voltage sensor and current sensor. Feeding and buggy control module consists of secondary digital signal processor DSP and secondary voltage sensor, feeding motor, buggy motor which linked together. Aiding functions module consists of single piece processor and micro printer, keyboard and LCD. Single piece processor serial port links with the serial ports of primary and secondary digital signal processor. The two DSP each finishes the power source external characteristic closed ring control and the buggy moving motor and feeding motor closed ring control. The single piece processor is mainly in charge of man-machine port, communication, printing, real-time displaying the welding status parameter. The whole system is controlled by software which is namely the all digital control of submerged are welding machine.

The invention discloses a DSP-based digital electric automobile charging method comprising a step 1 that a system control main program carries out initialization; a step 2 that timer interruption is triggered in order to initiate A/D conversion, enter an interrupt service subroutine, read an acquired charging voltage value, compare the voltage value with a flag bit set by an A/D conversion module, stop PWM output if the acquired voltage value is greater than the set flag bit, and call a PI regulation subroutine to refresh the PWM output if the acquired voltage value is less than the set flag bit; and a step 3 that a FlexPWM module outputs a PWM pulse and adjusts the main power circuit output voltage according to an PWM output value. The DSP-based digital electric automobile charging method achieves full digital control of electric automobile charging by means of a DSP, reduces the cost of an electric automobile control circuit, improves the precision of the output voltage and the A/D conversion, and increasing charging efficiency.

The invention relates to a device and method for dynamically compensating symmetrical voltages of a power grid based on high-temperature superconducting energy. The method is characterized in that a DSP (digital signal processor) chip TMS 320F2812 samples voltage, current and frequency characteristic parameters of a power grid side; all phase systems are formed into an independent three-phase system; and detected voltage dip signals are compared with normal voltages in real time so as to determine the compensating time that each phase is injected independently as well as the amplitude and the phase position of compensating voltages. A PWM (pulse width modulation) circuit generates drive signals which are supplied for a switching tube of a power regulator, thus realizing the full-digital control for energy of a superconducting energy storage system. The device and the method thereof are applied to quickly compensating three-phase symmetrical or asymmetrical dip faults which are generated in actual power grid voltages via the high-temperature superconducting energy storage system. According to the invention, a load voltage can return to a normal level in milliseconds, a no-voltage fluctuation, symmetrical and non-harmonic real-time control function is realized, and the power quality of the power grid and the power distribution reliability are improved.

A high-power power quality comprehensive compensation device comprises a main circuit (1), a main control algorithm implementation circuit (2) and a detection and protection circuit (3). The device transmits an analog signal which is output after passing through an analog signal conditioning circuit to the main control algorithm implementation circuit (2) through the analog signal conditioning circuit in the detection and protection circuit (3). After analog-digital conversion, the control algorithm of the high-power power quality comprehensive compensator is achieved through a DSP chip. A power device IGBT in the main circuit (1) is controlled to emit compensation current in the reverse direction of harmonic current or reactive current in detected load current. Meanwhile, energy compensation can also be performed on unbalanced current of an unbalanced load, and the composite compensation function of the device is achieved.

The invention provides an all-digital variable polarity multifunctional square-wave pulse welding source, and relates to the technical field of welding equipment. The all-digital variable polarity multifunctional square-wave pulse welding source is characterized in that a main circuit and a control circuit are included; the main circuit comprises a rectification filtration module, a front stage inversion module, a medium frequency voltage transformation module, a rapid rectification filtration module and a rear stage inversion module which are sequentially connected; the rectification filtration module is connected with a three-phase AC input power source, and the rear stage inversion module is connected with an electric arc load; the front stage inversion module, the medium frequency voltage transformation module, the rapid rectification filtration module and the rear stage inversion module are all connected with the control circuit, so that power output is controlled by the control circuit. The five sorts of current waveforms, namely direct currents, direct current pulses, square waves, square wave pulses and pulse square waves can be output through the welding source, meanwhile, the main circuit of the welding source is of a double-inversion structure, and thus the good electric energy conversion efficiency and dynamic response performance can be achieved.

The invention relates to an electrochemical machining high frequency pulse power source based on an SOPC technology. The electrochemical machining high frequency pulse power source comprises an AC input end, a primary rectifying filter circuit, a full-bridge inverter circuit, a high-frequency variable voltage circuit, a secondary rectifying filter circuit, a chopper filter circuit and a pulse output end, and further comprises an energy release device, a load current detection circuit and a control system. The control system is connected with the full-bridge inverter circuit, the chopper filter circuit, the energy release device and the load current detection circuit. When the rise rate of currents detected by the load current detection circuit is continuously larger than a set value by four sampling periods, the control system controls the full-bridge inverter circuit and the chopper circuit to be turned off, and pulse signals are output to trigger the energy release device. According to the electrochemical machining high frequency pulse power source based on the SOPC technology, the energy release device is arranged, when an abnormal phenomenon happens to processing, the control system can timely trigger the energy release device to protect a processing electrode, the stability of the power source is improved, and full-digital control of the power source is achieved.

The invention discloses a numerical control tapping device which comprises a frame and a feeding mechanism, a tapping mechanism, a material pushing mechanism, a product output mechanism and a programmable logic controller (PLC) which are arranged on the frame. The material pushing mechanism is used for pushing workpieces to be tapped to the tapping mechanism from the feeding mechanism. The tapping mechanism comprises an open type tapping platform formed by a material rotating disc, a second driving motor driving the material rotating disc to rotate and an arc material storage track matched with the material rotating disc. A plurality of material stopping ports evenly distributed in the radial shape are formed in the edge of the material rotating disc. The feeding mechanism, the material pushing mechanism, and the product outputting mechanism and the second driving motor are connected with the PLC, so that full numerical control of discharging, tapping and recycling is achieved.

The invention discloses an alternating current servo motor driver control circuit which comprises an arithmetic unit, a signal generator, a zero position sensor and a load sensor. An input interface, a communication interface and a monitoring interface are arranged on the arithmetic unit, the arithmetic unit is connected with the signal generator through the zero position sensor and the load sensor, and a feedback interface is arranged at one end of the signal generator. The alternating current servo motor driver control circuit improves control precision of a three-phase alternating current asynchronous motor, can control positions, rotating speeds, accelerated speeds and output torque of a common alternating current induction motor and a variable-frequency motor, achieves all-digital control for the motor, enables the alternating current induction motor to have the same speed-adjusting character of a synchronous motor and a direct current motor, is beneficial to reducing abrasion and vibration of parts of the three-phase alternating current asynchronous motor by using of the zero position sensor and a compound sensor, and prolongs service life of the three-phase alternating current asynchronous motor.

The invention relates to a full-functional belting rotary disk which is characterized by comprising a fluted disc component, a front retainer ring component and a rear retainer ring component; the front side and the rear side of the fluted disc are connected with a belting head casing through the front retainer ring component and the rear retainer ring component respectively; the fluted disc component, the front retainer ring component and the rear retainer ring component are all provided with a radial opening structure; a synchronous belt toothed groove is arranged at the outer periphery of the fluted disc which is connected with a servo motor through a synchronous belt, and the fluted disc is arranged on the belting head casing; two kidney-shaped brackets are symmetrically arranged inside the fluted disc component and are fixedly connected with the fluted component through an upper bearing support and a lower bearing support; and core parts of the kidney-shaped brackets are provided with insulating belt fixing discs, and the front sides of the insulating belt fixing discs are connected with a detachable pressing cover. The full-functional belting rotary disk has the advantages of full function, high quality and high efficiency.

The invention belongs to the technical field of the digital control, in particular relates to a switch power-source digital controller with digital communication function. A digital signal processor unit of the controller receives the feedback signal transmitted by a sensor, and bidirectinoally transmits the digital signal with a digital communication unit; the serial digital signal is bidirectionally transmitted between the digital communication unit and a superior machine; a supplementary power source supplies the controlling power for the digital signal processor unit and supplies the driving power for a PWM wave driving unit; the digital signal processor unit transmits the PWM wave to the PWM wave driving unit; and the PWM wave driving unit provides the driving signal to a power element that is arranged on a switch power source. The invention has the advantages that the complete-digital control of the switch power source is realized, good control precision of the switch power source is guaranteed, the remote monitoring and controlling of the switch power source are easily performed, and the reliability of the controller is improved.

The invention relates to a system for efficiently cracking electronic wastes based on strong plasma. The parts are connected in the following way that: a plasma power source, an electromagnet generation device, a plasma generator, a pyrolyzing furnace, an absorbing tower, a cloth bag dust collector and an active carbon absorbing tower are connected with a computer integrated management system through an iCAN (industrial Controller Area Network); the computer integrated management system is connected with a digital visual monitoring system through a TCP/IP (Transmission Control Protocol/Internet Protocol) network; the plasma generator is connected with the electromagnet generation device, the plasma power source, the pyrolyzing furnace and the digital visual monitoring system respectively;the pyrolyzing furnace is also connected with the digital visual monitoring system, the absorbing tower, a vitreous body discharging groove and a metal block shaping groove; the absorbing tower is connected with the cloth bag dust collector; and the cloth bag dust collector is in sequence connected with the active carbon absorbing tower. The system has high utilization rate of energy, good automation level and low economic cost in long term use.

The invention discloses a correction control circuit of a ballistic correction projectile based on a permanent magnet generator. A power generation winding is connected with a single-phase uncontrolled rectifier circuit, the single-phase uncontrolled rectifier circuit is connected with a DC-DC circuit and is also connected with a stabilized power supply and then is connected with a digital controller; the output of the control winding is connected with a three-phase uncontrolled rectifier circuit and is connected with a load circuit through a second power switching tube; and a detection winding is connected with the digital controller through a detection circuit, and the digital controller is connected with a projectile posture resolver through a communication circuit. The invention further discloses a correction control method of the circuit. The method comprises the following steps: firstly recording, by the digital controller, a target location of the projectile, after the projectile is emitted, the correction system is powered on, measuring, by the digital controller, the rotating speed of the generator through the detection winding, calculating the deviation between the actualtrajectory and a predetermined trajectory, and finally, correcting, by the digital controller, the trajectory of the projectile in combination with the deviation and the rotating speed of the generator. By adoption of the correction control circuit and control method disclosed by the invention, the accuracy and rapidity of the correction process are improved.

The invention discloses a monocrystalline silicon zone melting drawing furnace control system, which comprises an upper shaft rotation speed detection device, an upper shaft feeding speed detection device, a lower shaft rotation speed detection device, and a lower shaft drawing speed detection device, a hearth temperature detection device, a hearth air pressure detection device, a data acquisition module, a memory, a central processor, a control signal output module, an upper shaft rotation speed controller, an upper shaft feeding speed controller, a lower shaft rotation speed controller, a lower shaft drawing speed controller, a hearth temperature controller, and a hearth air pressure controller; the upper shaft feeding speed, the lower shaft drawing speed, the upper and lower shaft rotation speeds, the hearth temperature, and the hearth inert gas feeding pressure are controlled through linkage; and thus the diameter and circularity of a drawn monocrystalline silicon rod meet design requirements.

The invention relates to the technical field of battery detection, in particular to an aluminum air battery detection system and a control method thereof. Comprising a sample module, a hybrid power supply module, a load module and a detection equipment module. The hybrid power supply module is connected with the sample module, the load module is connected with the sample module, and the detection equipment module is connected with the sample module. The sample module consists of an aluminum air battery and is used as a detection sample; the hybrid power supply module is used for detecting the feasibility of an aluminum air battery application power supply mode; the load module is used for constructing a direct-current load and a nonlinear load and testing whether the discharge performance of the aluminum air battery meets the stable power supply requirement or not; the detection equipment module is used for detecting operation parameters of the aluminum air battery and parameters of an environment where the aluminum air battery is in operation; the system realizes full-digital control, has unattended operation and full-automatic operation capability, is comprehensive and reliable in system monitoring, and is accurate in aluminum air battery detection.