54 results about "Advanced phase" patented technology

A system and method are disclosed to generate and terminate clock shift modes during initialization of a synchronous circuit (e.g., a delay-locked loop or DLL). Upon initialization, the DLL is entered into a ForceSL (Force Shift Left) mode and an On1x mode (i.e., left shifting on each clock cycle). The feedback clock that tracks the phase of the reference clock (which, in turn, is derived from the system clock) is initially delayed in a coarse phase detector prior to applying it to the coarse phase detection window. Two delayed versions of the feedback clock are sampled by the reference clock to generate a pair of phase information signals, which are then used to establish an advanced phase equal (APHEQ) signal. The APHEQ signal advances onset of the PHEQ (phase equalization) phase and is used to terminate the ForceSL and On1x modes, thereby preventing wrong ForceSL exit due to clock jitter or feedback path overshooting during On1x exit. The avoidance of wrong ForceSL exit and On1x overshooting problems further results in faster DLL locking time.

A phase shifter includes a first signal path in which a first unit is disposed to advance a phase of a signal; a second signal path in which a second unit with no shunt capacitor is disposed to change the phase of the signal such that the changed phase is delayed than the advanced phase by the first unit; and a switch section configured to switch between the first signal path and said second signal path. The first unit comprises a filter, and the second unit is a transmission line.

The sole structure 1 has an upper plate, a lower midsole located under and fixedly attached to the upper plate, and having a laterally extending groove opening to the bottom side of the lower midsole, and a bending restriction member formed in a bent shape and spanning the groove longitudinally between the front edge and the rear edge of the opening of the groove. During the beginning phase of sole bending, the bending restriction member allows for the sole to bend till the bending restriction member gradually extends toward a straight shape from the bent shape and becomes taut between the front edge and the rear edge of the opening of the groove. During the advanced phase of the sole bending, when the bending restriction member experiences a force from the taut state, it functions so as to restrict the sole from bending.

The present invention discloses an adjustable advanced observation device. The device comprises a subtractor, a high-gain proportion-integral controller, an inertia combination filter, a first-order inertia filter, a first proportion unit, a second proportion unit and an addition unit. The adjustable advanced observation device can solve the technical problems that a current low-order observationdevice is low in efficiency, namely low in the advanced phase peak, and low in the ratio of the advanced phase peak and the gain peak.

The invention provides an advanced observation method and device. Advanced observation measured time, inertia combination filters, high gain ratio-integral controllers, 1-order inertia filters and a subtraction unit are arranged. An input signal accesses a subtracted input end of the subtraction unit, and the input signal is a process signal requiring advanced observation. An output end of the subtraction unit is connected to the input end of each high gain ratio-integral controller. The output end of each high gain ratio-integral controller is connected to the input end of each inertial combination filter. The output end of each inertial combination filter is connected to a subtraction input end of the subtraction unit, and the output end of each high gain ratio-integral controller is connected to the input end of each 1-order inertial filter. Advanced observation output of the input signal is acquired on the output end of each 1-order inertial filter. An advanced phase peak value ishigh and a ratio of the advanced phase peak value and a gain peak value is high too.

A hybrid drive apparatus includes an input member that is drivingly connected to a rotary electric machine and drivingly connected via an input clutch to an internal combustion engine, an output member that is drivingly connected to the input member and transmits rotation of the input member to wheels, and a control device that controls the rotary electric machine. The control device is capable of performing valve opening / closing phase control that advances or retards opening / closing phases of valve elements provided in the internal combustion engine via a valve opening / closing phase adjusting mechanism and, with the internal combustion engine in a stopped state before starting a vehicle, advances the opening / closing phases of the valve elements to bring the opening / closing phases of the valve elements into an advanced phase state relative to predetermined reference phases, thus starting the vehicle with torque of the rotary electric machine in the advanced phase state.

A method and apparatus for inspecting patterned transmissive substrates, such as photomasks, for unwanted particles and features occurring on the transmissive as well as pattern defects. A transmissive substrate is illuminated by a laser through an optical system comprised of a laser scanning system, individual transmitted and reflected light collection optics and detectors collect and generate signals representative of the light transmitted and reflected by the substrate. The defect identification of the substrate is performed using only those transmitted and reflected light signals, and other signals derived from them, such as greyscale representations and image features. Defect identification is performed using a pattern inspection algorithm by comparing image feature representations of the present substrate with an idealized representation thereof, and using an advanced phase shift algorithm that accounts for particular types of expected anomalies.

Electric power steering system has steering mechanism; input and output shaft side rotation angle sensors detecting rotation angles of input and output shafts; operation circuit calculating command current for an electric motor; rotation direction judging circuit judging whether rotation directions of the input and output shafts are identical; advanced-phase judging circuit judging which phase of input and output shaft side rotation angle signals (S1, S2) is advanced; normal / reverse input judging circuit judging that (i) when both rotation directions are identical and S1 is advanced, input is normal input and (ii) when both rotation directions are identical and S2 is advanced, input is reverse input; and command current correcting circuit. The command current correcting circuit corrects the command current so that when the normal input is judged, torque in the same direction as input shaft rotation direction generated by the electric motor is greater than a case of reverse input judgment.

A clock and data recovery circuit generates a recovery and a reference clock corresponding to the input data and includes a phase shifter generating M discrete clocks at different phases, a data sampler generating a select signal according to the input data and the M discrete clocks, a primary phase selector outputting two consecutive discrete clocks and at least one interpolated clock with a phase between the phases of the two consecutive discrete clocks, a multiplexer selecting one of the two consecutive discrete clocks or the interpolated clock as a selected output clock, a phase detector receiving the selected output clock as the recovery clock and outputting an advanced calibration signal if the recovery clock leads or lags the input data, an advanced phase selector receiving the advanced calibration signal and transmitting the phase select signal to the multiplexer for adjusting the selected output clock and a primary calibration signal.

A system and method are disclosed to generate and terminate clock shift modes during initialization of a synchronous circuit (e.g., a delay-locked loop or DLL). Upon initialization, the DLL is entered into a ForceSL (Force Shift Left) mode and an On1x mode (i.e., left shifting on each clock cycle). The feedback clock that tracks the phase of the reference clock (which, in turn, is derived from the system clock) is initially delayed in a coarse phase detector prior to applying it to the coarse phase detection window. Two delayed versions of the feedback clock are sampled by the reference clock to generate a pair of phase information signals, which are then used to establish an advanced phase equal (APHEQ) signal. The APHEQ signal advances onset of the PHEQ (phase equalization) phase and is used to terminate the ForceSL and On1x modes, thereby preventing wrong ForceSL exit due to clock jitter or feedback path overshooting during On1x exit. The avoidance of wrong ForceSL exit and On1x overshooting problems further results in faster DLL locking time.

A valve timing control device comprises a drive rotation member driven by a crankshaft of an internal combustion engine; a driven rotation member fixed to a camshaft that actuates engine valves to open and close, the drive rotation member and driven rotation member being coaxially arranged to make a relative rotation therebetween; a phase varying mechanism that rotates the driven rotation member relative to the drive rotation member within a given angle, the phase varying mechanism being able to cause the driven rotation member to take the most-retarded phase position, the most-advanced phase position and a middle phase position defined between the most-retarded phase position and the most-advanced phase position; and a position keeping mechanism that is able to keep the driven rotation member at least the most-retarded phase position and the middle phase position at the time of starting the engine, and is able to select one of the most-retarded phase position and the middle phase position in accordance with an operation condition of the engine.

The invention relates to a high voltage large power resonance frequency conversion deicing device and method which is capable of improving the frequency of a line loading circuit from an industrial frequency of 50Hz to 1000-1800Hz according to the principle that a lead wire generates skin effects under a high frequency situation, and the resistance of the corresponding line is increased by about 5 times, the current transmitted by the line under the condition of a same deicing power is reduced, so as to reduce the overcurrent hardness of the line; the principle of LC series resonance is simultaneously utilized by connecting a resonance capacitor reaction at the connection position of a power electric frequency conversion device and the line to lead the equivalent inductance of the power electric frequency conversion device and the line, thus realizing series resonance under the current of 1000 to 1800Hz. In order to realize series resonance between the equivalent inductance of a line under the situation with incorrect line data and the series capacitor, a self adaptive frequency adjusting technique is adopted in the invention to lead the line to be operated at a resonance point. The device of the invention is suitable for deicing three-phase and single-phase lines; a constant current control method can ensure the stability of deicing; an advanced phase-split control method can ensure the device to be suitable for the simultaneous deicing of the three-phase line with different parameters.

A control device projects a lock pin to lock a VCT phase in an intermediate lock phase when a lock request occurs. A learning unit learns one of a most retarded phase, a most advanced phase, and an intermediate lock phase, as a reference phase. A control unit sets a target phase according to the reference phase and controls the control device. A monitor unit determines that the VCT phase has passed through the intermediate lock phase when the lock request occurs before completion of learning of the reference phase, and when a change in the VCT phase becomes greater than a threshold. The threshold is set to be greater than a sum of i) a design value of a phase difference between the intermediate lock phase and one of the most retarded phase and the most advanced phase and ii) a range of a product variation of the phase difference.

The invention discloses an initial starting method for a double-shaft contra-rotating permanent magnet brushless direct current motor. A starting process is divided into two stages according to the characteristics of the starting process of the double-shaft contra-rotating permanent magnet brushless direct current motor. In a first stage, a first-stage phase change control table for the double-shaft contra-rotating permanent magnet brushless direct current motor in 144 initial states of an inner rotor and an outer rotor is established according to an advanced phase change principle for the 'two-phase conducted three-phase star-like six-state' driven double-shaft contra-rotating permanent magnet brushless direct current motor. A conduction mark calculation method is summarized by the initial phase change control table, a conduction mark can be rapidly calculated in a digital signal processor (DSP) without looking up the phase change control table, and the initial rotation of the motor is realized.

The invention discloses a fault-tolerant control method for a Hall position sensor of a permanent-magnet brushless motor, aiming to solve the technical problem of low practicality of existing fault-tolerant control methods for Hall position sensors of permanent-magnet brushless motors. The technical scheme of the fault-tolerant control method includes the steps of identifying three Hall position sensor output sequences during forward and backward rotation of the permanent-magnet brushless motor firstly; outputting signals to the Hall position sensor to determine fault positions and shield fault signals; if the actual rotation direction of the permanent-magnet brushless motor is identical to a given rotation direction, performing fault-tolerant control on the Hall position sensor of the permanent-magnet brushless motor according to a position compensation method; if the actual rotation direction of the permanent-magnet brushless motor is different from the given rotation direction, restarting the motor according to an advanced phase change method to keep the actual rotation direction identical to the given rotation direction. The fault-tolerant control method has the advantages thatfault-tolerant control is realized by the position compensation method, torque ripples are reduced, normal working of the permanent-magnet brushless motor is guaranteed, the reliability of a full-electric braking system of an airplane is improved, and the practicality is high.

A synchronous pipeline design is provided that includes a first predetermined number of fetch logic sections, or “stages”, and a second predetermined number of execution stages. Instructions are retrieved from memory and undergo instruction pre-decode and decode operations during the fetch stages of the pipeline. Thereafter, decoded instruction signals are passed to the execution stages of the pipeline, where the signals are dispatched to other execution logic sections to control operand address generation, operand retrieval, any arithmetic processing, and the storing of any generated results. Instructions advance within the various pipeline fetch stages in a manner that may be independent from the way instructions advance within the execution stages. Thus, in certain instances, instruction execution may stall such that the execution stages of the pipeline are not receiving additional instructions to process. This may occur, for example, because an operand required for instruction execution is unavailable. It may also occur for certain instructions that require additional processing cycles. Even though instructions are not entering the execution stages, instructions may continue to enter the fetch stages of the pipeline until all fetch stages are processing a respective instruction. As a result, when normal instruction execution resumes within the execution stages of the pipeline, all fetch stages of the pipeline have been filled, and pre-decode and decode operations have been completed for those instructions awaiting the entry into the execution stages of the pipeline.

A hybrid drive apparatus includes an input member that is drivingly connected to a rotary electric machine and drivingly connected via an input clutch to an internal combustion engine, an output member that is drivingly connected to the input member and transmits rotation of the input member to wheels, and a control device that controls the rotary electric machine. The control device is capable of performing valve opening / closing phase control that advances or retards opening / closing phases of valve elements provided in the internal combustion engine via a valve opening / closing phase adjusting mechanism and, with the internal combustion engine in a stopped state before starting a vehicle, advances the opening / closing phases of the valve elements to bring the opening / closing phases of the valve elements into an advanced phase state relative to predetermined reference phases, thus starting the vehicle with torque of the rotary electric machine in the advanced phase state.

The invention provides an initial startup method for a biaxial contra-rotating permanent-magnet brushless direct-current motor. According to the method, a startup process is divided into two stages according to the characteristics of an initial startup process of the biaxial contra-rotating permanent-magnet brushless direct-current motor; at the first stage, aiming at the two-phase-conduction three-phase-star-shape six-state driven biaxial contra-rotating permanent-magnet brushless direct-current motor, a first-stage phase commutation control table of the biaxial contra-rotating permanent-magnet brushless direct-current motor in initial 144 states of inner and outer rotors is formulated according to an advanced phase commutation principle; a conduction code calculation method is summed up through the initial phase commutation control table, and a conduction code can be quickly calculated in a DSP (Digital Signal Processor) without querying a phase commutation table, so as to realize the initial rotation of the motor.

The invention provides a motor control apparatus capable of improving the performances of both interference suppression and positioning adjustment. A phase advancer (125) is configured to advance the phase of the speed feedback of a motor (110) in order to compensate the phase retardation of the speed feedback of the motor (110) within the high-frequency range. A time constant adapter (130) is configured to multiply the speed feedback difference between the advanced phase and speed commands sent by a computer by a time constant so as to suppress the interference effect. An integrator (140) is configured to integrate commands multiplied by the time constant adapter. A speed proportional gain (150) is configured to accumulate the commands, gain the accumulated commands by a speed ratio, and then output the torque command of the motor. The torque command is then input into a torque control part (160) so as to control the power supplied to the coil of the motor (110).

A delay locked loop increases an operation margin of a delay locked loop by using an output clock having more advanced phase than a DLL output clock. A clock delay compensation block receives an external clock signal to thereby generate a first multi clock and a second multi clock. A phase control block compares the first multi clock with the second multi clock to generate phase control signal controlling a shifting operation. A multi-phase delay control block performs a shifting operation based on the phase control signal to control the clock delay compensation block.

The invention belongs to the technical field of power systems and automation thereof, and discloses a forced oscillation disturbance source positioning method based on frequency band-dividing parallel computation. A preset frequency range is divided into a plurality of frequency bands for parallel computation; as for each frequency band, through setting each data window length and each sampling frequency, analyzed data points are reduced; each frequency band adopts an asynchronous computation mode, other frequency bands do not need to be waited after one-round analysis computation, a result is refreshed and new data are obtained for next-round analysis, dissipation power of a unit, a transformer and a line is calculated, a suspected oscillation source related element is screened according to a threshold value, oscillation elements are grouped according to a dominant mode phase angle, and elements with advanced phases in the group of the suspected oscillation source elements are selected as the oscillation source unit, the related line and the transformer. The scheme is reasonably designed, and forced power oscillation warning and disturbance source positioning information timeliness can be ensured.

A PWM interruption subroutine is built in single chip MCU of controller of brushless motor for general motor-assisted bicycle. Based on Hall signal, MCU calculates real time rotate speed of motor to determine whether a weak magnetic rotate speed point is reached. If yes, weak magnetic angle of corresponding rotate speed i.e. advanced phase change angle is calculated. Based on the said advanced phase change angle, MCU outputs relevant logic signal of advanced phase change through table look up. Then, weak magnetic control is implemented for motor through parts of preceding stage driving and power amplification. Advantages are: target of maximum speed is guaranteed without increasing cost of controller hardware; increasing designed value of moment coefficient reduces current of power part of controller effectively when bicycle climbs sloping field so as to raise service life of the controller.

The invention discloses a progress class system, comprising a courseware server, a feedback server and a teaching server. The courseware server provides class information and class resources for the feedback server and the teaching server; the feedback server feeds back analysis, evaluation and award results for the courseware server and the teaching server; the teaching server provides teaching information for the feedback server and the courseware server; an efficient interactive class is established with a progress learning system; each student's learning state and results are monitored inreal time based on biological feedback and aptitude feedback by means of a mobile intelligent terminal; the progress class system allows a student's cognitive ability to be given to fullest play, thestudent is progressively promoted to improve the learning ability, average class efficiency may be three times as high as that of a traditional class and twice as high as a multimedia class. When thestudent's learning ability reaches an advanced phase, the class efficiency of the progress class system may be more than five times as high as that of a traditional class.

The invention discloses an energy storing device which is used for air conditioners and hot water supply. The energy storing device comprises a box body (6) and is characterized in that the box body (6) is internally provided with two sets of capillary pipe heat exchange structures which are respectively used for storing energy and discharging the energy; and a cavity of the box body is internally filled with a heat storage medium material capable of phase change. The energy storing device transmits heat to a phase change medium through one set of the capillary pipe heat exchange structures, and the phase change medium absorbs and stores the energy; and when a system needs the heat, the other set of the capillary pipe heat exchange structures can extract the heat from the energy storing device to meet the requirements of life or engineering. The energy storing device better compensates the defects of various energy utilizations such as solar thermal collectors, air source heat pumps, water resource heat pumps, and the like and stores the energy with high efficiency and high capacity according to the requirements by adopting the advanced phase change and capillary pipe heat exchange technology so as to adjust the timeliness in the process of using the energy. The energy storing device has high heat exchange efficiency and heat storage capability and small volume.

A valve timing control device comprises a drive rotation member driven by a crankshaft of an internal combustion engine; a driven rotation member fixed to a camshaft that actuates engine valves to open and close, the drive rotation member and driven rotation member being coaxially arranged to make a relative rotation therebetween; a phase varying mechanism that rotates the driven rotation member relative to the drive rotation member within a given angle, the phase varying mechanism being able to cause the driven rotation member to take the most-retarded phase position, the most-advanced phase position and a middle phase position defined between the most-retarded phase position and the most-advanced phase position; and a position keeping mechanism that is able to keep the driven rotation member at least the most-retarded phase position and the middle phase position at the time of starting the engine, and is able to select one of the most-retarded phase position and the middle phase position in accordance with an operation condition of the engine.

The invention relates to a motor control system with a speed-change function and a method thereof. The motor control system with the speed-change function comprises a state control module, a DC / DC boost conversion module, a motor phase current driving module, a phase current detection module and a power supply module, wherein the power supply module can adopt a battery for providing low voltage, when the rotational speed of a motor is increased to a certain degree, the DC / DC boost conversion module is used for boosting input voltage, and the state control module uses the phase angle advanced phase change technique to maintain that proper torque is still output when the motor power system of an electric two-wheel vehicle rotates at a high speed, and under a proper plan, traditional application occasions requiring for a mechanical speed control system can be replaced, so as to achieve the purposes of simplifying the system and saving cost.

A phase shifter includes a first signal path in which a first unit is disposed to advance a phase of a signal; a second signal path in which a second unit with no shunt capacitor is disposed to change the phase of the signal such that the changed phase is delayed than the advanced phase by the first unit; and a switch section configured to switch between the first signal path and said second signal path. The first unit comprises a filter, and the second unit is a transmission line.