30 results about "Digital test controller" patented technology

The invention discloses a full-digital power controller for a satellite. The full-digital power controller comprises a shunt, a charging controller, a discharging regulator, a balance controller and a central processor based on a DSP (digital signal processor). The power controller adopts a three-region control mode including a shunt region, a charging region and a discharging region, and the three regions are distinguished by using the DSP for sampling bus voltage. The balance controller samples the voltage of each lithium battery through the DSP to realize a balance control algorithm in DSP software so as to realize balance control among the lithium batteries. By the full-digital power controller for the satellite, full-digital control of a satellite power system is realized, a great quantity of hardware circuits, such as MEA (multi-electrode array) circuits and PWM (pulse width modulation) generation circuits are saved, the system integrity is improved, and system reliability is fundamentally and greatly improved.

A hybrid control system for controlling an electric machine coupled to a gas turbine engine is provided. The control system comprises: a primary analog control loop including an analog controller for controlling the electric machine based on a set point and a measured output of the electric machine; and a digital controller of the turbine engine operationally connected to the primary analog control loop to adjust at least one control parameter associated with the analog controller.

Disclosed is a lighting system supporting multiple independently controlled zones utilizing a plurality of semiconductor switches coupled to a plurality of transformers to produce a non-sinusoidal power output and controlled by a digital controller that receives feedback from each zone in order to auto-sense the proper voltage for a plurality of connected loads.

The invention discloses an intelligent warp knitting multi-speed electronic let-off system which comprises a digital PID master controller connected with a parameter setting input device, a frequency converter, a spindle speed encoder arranged on a spindle motor, and a beam speed encoder arranged on a beam motor, wherein the master controller is in drive connection with the spindle motor through the frequency converter; and an output end of the spindle speed encoder is connected with a feedback input end of the master controller through an electric signal. The system also comprises digital beam slave controllers; the slave controllers are multiple digital PID controllers in shunt feedback connection; each slave controller comprises a PID module, a single-neuron adaptive algorithm module and a fuzzy immunity optimization algorithm module; a feedback output end of each slave controller is connected with a feedback input end of the master controller through an electric signal; and an input end of each slave controller is connected with an output end of the master controller through an electric signal. The whole control system has higher intelligence and can meet the system control requirement for multi-speed high-precision high-speed frequent switching of the multi-speed electronic let-off system.

The invention belongs to the technology of plane environment control, and relates to the improvement of a method for determining a control parameter of a digital controller of a cabin pressure control system. The method for determining the control parameter of the digital controller of the cabin pressure control system is characterized by including the following steps that a testing device is connected, a quick change area of an exhaust valve under a typical airport environment is determined, the minimum value in the H1 and H2 is selected, and the parameter and the parameter action range of the digital controller are determined. By means of the method for determining the control parameter of the digital controller of the cabin pressure control system, the phenomenon of 'swelling' in the rapid climbing process of a plane is removed, and the comfort of flight personnel and passengers is improved.

A controller assembly is adapted for regulating at least one valve having a valve positioner. The controller assembly comprises a digital controller having a plurality of data inputs and data outputs and includes at least one proportional-integral-derivative (PID) controller operative to modulate the valve positioner in response to data received at the data inputs. The digital controller is configured to perform the following functions within a total time period of no greater than 10 ms: acquisition of data at the data inputs, processing of the data, and transmission of data from the data output in order to regulate the valve(s). The digital controller may include a quantity of at least sixteen digital inputs, at least sixteen digital outputs, at least eight analog inputs and at least eight analog outputs.

The invention provides an electric actuation system comprising a digital controller, first to fourth power supply transformation circuits and first to fourth steering engines. The digital controller acquires the input current signals, the rotor displacement signals and the rotor angle signals of the first to fourth steering engines and integrally computes the driving signals of the switching devices in the first to fourth power supply transformation circuits by using a vector control method and transmits the driving signals to the first to fourth power supply transformation circuits through an isolation circuit. The first to fourth power supply transformation circuits supply driving electric energy to the first to fourth steering engines. Four steering engines are integrally controlled by using one digital controller so that high-performance position servo control can be realized, the power density of the system can be enhanced, miniaturization of the system can be facilitated and the reliability and the rapidity of the system can be guaranteed.

The invention relates to a pure hardware simulation controller for a DC brushless motor. The pure hardware simulation controller comprises a Hall sensor and decoding unit, a digital logic controller and an intelligent power module (IPM), wherein the Hall sensor and decoding unit detects a position signal of a rotor and transmits the signal to the digital logic controller. The pure hardware simulation controller is characterized by further comprising a pulse width modulation (PWM) signal generation circuit, wherein a PWM signal output by the PWM signal generation circuit is input to the digital logic controller for processing; the output end of the digital logic controller is connected with the input end of the IPM; and the output end of the IPM is connected with a stator winding. The pure hardware simulation controller can conveniently regulate speed, rapidly meet requirements on the performance of different series of motors with different rotating speeds, reduce difficulties in research, development and production, decrease the rejection rate of the product, improve efficiency and reduce cost.

The invention discloses a soft starting method of power output of a micro gas turbine power station. The method comprises the steps as follows: (1) for a load of which the load type is a motor type and parameters are known, a user inputs load parameters into an upper computer, the upper computer calculates soft starting parameters, transmits the soft starting parameters to a digital power controller in the micro gas turbine power station and executes the step (2), the load parameters include rated voltage Vm, a rated frequency fm, rated power Pm and rated current Im of the load, and the soft starting parameters include an output voltage initial value V0, an output frequency initial value f0, an output voltage change rate Vslew and an output frequency change rate fslew; and (2) the digital power controller receives the soft starting parameters and drives the load to start according to the soft starting parameters. According to the soft starting method, the loading ability of the micro gas turbine power station can be improved on the basis of meeting an existing power output function, and especially, the soft starting method has a significant effect on the load of an asynchronous motor.

A thermal frame of an imprinting apparatus has an motor and a cooling element. A metrology frame of the imprinting apparatus is coupled to an output end of the motor and receives an imprinting mold. Thermal isolation is provided between the motor and the metrology frame. Thermal sensors are disposed at locations of the frames. A digital controller applies a control signal for controlling a driving signal of the cooling element to maintain a thermal balance, such as thermal equilibrium, of heat flow between the frames. The digital controller uses output of the thermal sensors to identify transfer functions of heat flow used to calculate the control signal. The feedforward design avoids the very low control bandwidth that limits the performance of typical feedback designs.

An electromagnet power source comprises a digital controller, a modulator, a power device and an electric current transducer, wherein based on a preset referential current signal and a sensing current signal of output electric current corresponding to the electromagnet power source, the digital controller produces a controlling current signal, based on the controlling current signal, the modulator produces a power device controlling signal, based on the power device controlling signal, the power device draws electric energy from a power supply and provides an electromagnet load for the electric current, and the electric current transducer is arranged at the output end of the electromagnet power source to produces the sensing current signal. The electromagnet power source and control method and digital controller of the electromagnet power source provides a method used for controlling the electromagnet power source and the digital controller.

A surgical system is presented including a microwave generator having a resistive identification connector with a plurality of resistive channels, each resistive channel having a plurality of resistive values. The surgical system further includes a microwave applicator having a device identifier, the microwave applicator configured to be connected to the microwave generator via a reusable cable. The surgical system also includes a digital controller configured to be connected to the resistive identification connector of the microwave generator. The device identifier of the microwave applicator is relayed to the digital controller via a resistive channel of the plurality of resistive channels of the resistive identification connector to enable the digital controller to control the microwave applicator by adjusting at least one operation of the microwave generator. The microwave generator further includes at least one digital pass-through line to allow direct communication between the microwave applicator and the digital controller.

The invention discloses an electromagnetic bearing switching power amplifier for modular series. The electromagnetic bearing switching power amplifier comprises a digital controller, a current sensor, a signal conditioning circuit and at least one power module; two ends of the power modules connected in series in a modular way are used as voltage input ends; after being connected in series, the current sensor and a load are used as an output end connected in the power modules; the output end of the current sensor is connected with the digital controller through the signal conditioning circuit; the digital controller is connected to various power modules, and controls connection among the various power modules and the internal conduction state of each power module; and thus, the performance and the requirement of the portability of the switching power amplifier are achieved. The electromagnetic bearing switching power amplifier can be flexibly selected and put into use; the optimal performance of the switching power amplifier is realized; the power modules are uniformly designed and convenient to replace; faults can be simply removed; compared with a power amplification device using a high-voltage device, the working efficiency of the switching power amplifier used in a low-voltage working occasion is relatively high; and the loss is relatively low.

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 digital intelligent electricity saver. The digital intelligent electricity saver can collect diversified on-site data in real time, integrate the collected data, and reasonably provide electric energy needed by load, so as to achieve the purpose of saving electricity. The digital intelligent electricity saver comprises an input switching circuit, a speed regulator or a variable reactor, an output switching circuit and a digital intelligent controller, wherein the input switching circuit and the output switching circuit are respectively connected with the speed regulator or the variable reactor electrically; the digital intelligent controller comprises a signal collecting and conditioning circuit and a digital control circuit; the signal collecting and conditioning circuit is electrically connected on the digital control circuit; and the digital control circuit is electrically connected with the input switching circuit, the speed regulator or the variable reactor and the output switching circuit.

The invention provides a hybrid control method based on Petri network, which is characterized in that a Petri network based controller and an industrial computer are used. The controller comprises a monitor and a digital controller, and is used for monitoring the state variable or the output quantity of a controlled object and determining a working mode according to a set control strategy. The industrial computer is connected with the controlled object to realize the data collection of the controlled object and convert the control quantity sent by the controller into specific control data of the controlled object. The hybrid control method comprises: step 1: establishing a generalized synchronous self-controlled network system model of the monitor part in the controller; step 2: establishing a generalized synchronous self-controlled network system model of the digital controller part in the controller; step 3: establishing a complete controller model; step 4: using the industrial computer to perform the data collection and control on the controlled object. The hybrid control method based on Petri network completes the unified Petri network modeling of the monitor and the digital controller, and is easy to integrate with other intelligent control methods.

An electro-hydraulic proportional control system based on a digital controller is mainly composed of a control system and a hydraulic loading system. The system adopts force value closed-loop real-time control, which improves the control of loading rate and force value accuracy during the loading process of the testing machine, and has high dynamic performance and automatic adjustment. The electro-hydraulic proportional loading system based on the digital controller can better meet the loading requirements of the testing machine, the loading process is stable and there is no overshoot, and the force value control accuracy can be within the allowable range.

The invention discloses a digital vortex multi-connected air conditioner refrigerating system teaching training station, which consist of a digital vortex multi-connected air conditioning unit and a refrigerating system operation and control training station. The digital vortex multi-connected air conditioning unit comprises a refrigerating system and an electric control system. The refrigeratingsystem consists of a digital vortex compressor, a fixed frequency compressor, a main four-way valve, an auxiliary four-way valve, various control electromagnetic valves, a condenser, a throttling part and a multi-connected indoor unit. The electric control system comprises a sensor, a main control board, a digital vortex controller and a plurality of electric appliance actuating mechanisms. The front side of the refrigerating system operation and control training station is printed with a refrigerating system pipeline structure schematic diagram and is provided with a thermal parameter instrument and an electric quantity parameter instrument which are used for displaying real-time parameter values. By two modes of simulation and real operation, design functions of comprehensive learning training, experiments and the like such as operation mechanism learning, signal measurement, fault setting and diagnosis, signal acquisition and real-time demonstration, performance tracking research and the like are realized.

An electromagnet power source comprises a digital controller, a modulator, a power device and an electric current transducer, wherein based on a preset referential current signal and a sensing current signal of output electric current corresponding to the electromagnet power source, the digital controller produces a controlling current signal, based on the controlling current signal, the modulator produces a power device controlling signal, based on the power device controlling signal, the power device draws electric energy from a power supply and provides an electromagnet load for the electric current, and the electric current transducer is arranged at the output end of the electromagnet power source to produces the sensing current signal. The electromagnet power source and control method and digital controller of the electromagnet power source provides a method used for controlling the electromagnet power source and the digital controller.

The invention discloses a soft starting method of power output of a micro gas turbine power station. The method comprises the steps as follows: (1) for a load of which the load type is a motor type and parameters are known, a user inputs load parameters into an upper computer, the upper computer calculates soft starting parameters, transmits the soft starting parameters to a digital power controller in the micro gas turbine power station and executes the step (2), the load parameters include rated voltage Vm, a rated frequency fm, rated power Pm and rated current Im of the load, and the soft starting parameters include an output voltage initial value V0, an output frequency initial value f0, an output voltage change rate Vslew and an output frequency change rate fslew; and (2) the digital power controller receives the soft starting parameters and drives the load to start according to the soft starting parameters. According to the soft starting method, the loading ability of the micro gas turbine power station can be improved on the basis of meeting an existing power output function, and especially, the soft starting method has a significant effect on the load of an asynchronous motor.

The invention provides a photovoltaic inverter which belongs to power supply or power distribution circuit devices or systems, provides a power storage system, and particularly relates to the structure improvement of an alternating current mains or alternating current distribution network circuit device. The photovoltaic inverter provided by the invention has the advantages of high conversion efficiency, high reliability and stable operation. The photovoltaic inverter provided by the invention comprises an exciter, a voltage regulator, an amplifier module, an excitation module, a filter, a trigger, a central controller, a digital signal controller and a regulation module. The photovoltaic inverter is characterized in that the central controller is connected with the trigger, the amplifier module, the digital signal controller and the regulation module; the amplifier module is connected with the voltage regulator, the filter and the excitation module; the voltage regulator is connected with the exciter; and the filter is connected with the trigger.

The invention discloses an output constant current-based digital controller of an AC-DC (alternating current-direct current) isolated converter. The digital controller comprises a voltage detecting unit, a current threshold calculating unit, a delay compensation calculating unit, a peak current comparing unit, a PWM (Pulse-Width Modulation) generating unit and a driving unit. In the digital controller, according to the inherent characteristic of a Flyback isolated topology structure and on the basis of the traditional AC-DC isolated converter, the original side peak current is sampled, and the auxiliary winding voltage is sampled, so that a coupling isolating device is eliminated, and the cost is reduced; the rising digital control technology is adopted to substitute the traditional analog control technology, constant current control is ingeniously realized through the special powerful operational capability of digital control, and the large area occupied by analog control is reduced; and in order to overcome the deficiency of control precision in the digital control way, a switch tube driving circuit delay compensation unit is introduced to improve output current precision.

The invention provides a main controller of a full-automatic packing belt production machine. The main controller of the full-automatic packing belt production machine comprises a machine body, a first working chamber and a second working chamber. The first working chamber and the second working chamber are arranged in parallel; a servo motor is arranged in the first working chamber; one end of the servo motor is connected with the second working chamber through a driving belt; a control panel is arranged on the surface of the second working chamber; an output end of the control panel is connected with a digital controller; the digital controller is electrically connected with the servo motor; and an output end of the digital controller is connected with a production system, a cooling and sizing system and a feeding system. According to the main controller of the full-automatic packing belt production machine provided by the invention, various systems are connected in a digital control way, and the limited control on the systems is carried out through the control panel, so that the control accuracy of the device is improved, the various mechanical systems are tightly matched, and the work efficiency is improved; and in addition, the whole device changes an original mechanical control manner, and the control system is integrated into the control panel, so that the difficulty in operation is greatly reduced, the convenience is improved, the mechanical fault can be reduced, and the service life is prolonged.

The invention relates to a non-uniform oversampling digital controller and a control method thereof, and belongs to the technical field of electronic circuits. The non-uniform oversampling digital controller comprises a proportion-integration-differential compensator and a non-uniform oversampling ADC changing resolution and conducting sampling and quantization based on input signal. The non-uniform oversampling ADC is provided with a first input end used for output connection with switching converter topology and a second input used for connection with reference signals. The output end of thenon-uniform oversampling ADC is connected with the input end of the proportion-integration-differential compensator. The proportion-integration-differential compensator is provided with an output end. The invention further discloses the control method of the non-uniform oversampling digital controller. The non-uniform oversampling digital controller and control method thereof have the advantagesthat the structure is simple, the switching time is short, accuracy is high, and stability is high.

The invention relates to a digital controller, a display module control system and a display module control method. The digital controller comprises a digital processing unit which comprises a comparison table. The comparison table stores a plurality of pre-set voltage values and a plurality of working frequency parameters, wherein each of the pre-set voltage values corresponds to one of the working frequency parameters. The digital controller searches the comparison table in response to an input signal which is input into the digital controller from a power source to find out the pre-set voltage value matched with the voltage value of the input signal, and generate a control signal with the working frequency parameter corresponding to the pre-set voltage value to control the display module, thus the power supplied to the display module has constant power basically.

A power conversion apparatus, including a transformer, a switch, an analog controller, a digital controller, and a voltage converter-based feedback circuit, is provided. The primary side of the transformer is coupled to an input voltage, and the secondary side of the transformer is coupled to an output voltage provided to a load. The switch intermittently transmits the input voltage to the primary side of the transformer. The analog controller is disposed at one of the primary side and the secondary side of the transformer and configured to control the operation of the switch in response to an analog feedback signal. The digital controller is disposed at the other one of the primary side and the secondary side and configured to generate a digital feedback signal. The voltage converter-based feedback circuit is configured to convert the digital feedback signal to the analog feedback signal based on a voltage conversion characteristic thereof.