30results about How to "Wide input" patented technology

A scrolling scan optical band scanner is provided having a scrolling scan optic with a scan function that inherently deviates from an ideal imaging function over wide apertures. Compensation optics are provided to correct the scrolling scan optic performance to provide accurate imaging over a wide aperture. The compensation optics and the scrolling scan optic together accurately scroll the input pattern to an output pattern according to the formula: xo(t) / X=(t / T+xi / X) modulo 1, with X being the total height of input and output beam, xi being the ray height in the input beam, xo being the corresponding ray height in the output beam as a function of time, T being the frame period, and t being the time, and said scroll patterns remains telecentric even where X is large with respect to a physical size of the scanning optic system.

The invention discloses a wide-range bidirectional conversion circuit and a control method. The wide-range bidirectional conversion circuit comprises a three-stage bidirectional converter and a control unit, and the three-stage bidirectional converter is formed by sequentially connecting a non-isolated DC / DC converter, an isolated DC / DC converter and a DC / AC inverter. When the system works in theforward direction, a direct-current power supply or energy storage equipment realizes grid-connected energy feedback through the non-isolated DC / DC converter, the isolated DC / DC converter and the DC / AC inverter; and during reverse working, an alternating voltage supplies power to a direct-current load or charges an energy storage device through a rectifying circuit, the isolated DC / DC converter and the non-isolated DC / DC converter. In order to adapt to different power levels and realize higher input current ripple control, the non-isolated converter adopts a multi-phase interleaved parallel structure; and in order to further broaden the requirements of input and output ranges in practical application, the isolated converter can be controlled by adopting a full-bridge / half-bridge variable structure. The whole system has the advantages of wide input direct-current voltage range, wide output alternating-current voltage range, wide load range, small current ripple, high-frequency isolation, high efficiency, energy conservation, environmental protection and the like.

A power converter topology is adapted for efficiency according to input voltage, output voltage or output current conditions. Topology adaptation is achieved by control responsive to the input and output operating conditions, or to one or more external control signals. Transition between any two topologies is implemented by pulse width modulation in the two switches in one of two bridge legs of a full bridge converter. When transitioning from full-bridge to half-bridge topology, the duty ratio of one switch in one leg of the full bridge is increased, while simultaneously the duty ratio of the other switch in the same leg is reduced until one switch is continuously on, while the other switch is continuously off. The transition from the half-bridge to the full-bridge topology is accomplished by modulating the same switches such that, at the end of the transition, both switches operate with substantially the same duty cycle.

A bidirectional DC / DC converter includes first and second control circuits, and first and second bridge circuits respectively connected to first and second direct current voltage supplies. In one embodiment variant, when power is supplied from the first direct current voltage supply to the second direct current voltage supply, the first control circuit carries out PFM control of the first bridge circuit at a frequency equal to or lower than the resonance frequency of an LC resonant circuit in accordance with a control amount based on the voltage and current of the second direct current voltage supply. When power is supplied in the other direction, the second control circuit carries out fixed frequency control of the second bridge circuit, using phase shift control or the like, in accordance with a control amount based on the voltage and current of the first direct current voltage supply.

A power converter topology is adapted for efficiency according to input voltage, output voltage or output current conditions. Topology adaptation is achieved by control responsive to the input and output operating conditions, or to one or more external control signals. Transition between any two topologies is implemented by pulse width modulation in the two switches in one of two bridge legs of a full bridge converter. When transitioning from full-bridge to half-bridge topology, the duty ratio of one switch in one leg of the full bridge is increased, while simultaneously the duty ratio of the other switch in the same leg is reduced until one switch is continuously on, while the other switch is continuously off. The transition from the half-bridge to the full-bridge topology is accomplished by modulating the same switches such that, at the end of the transition, both switches operate with substantially the same duty cycle.

The present invention relates to an integrated magnetics component comprising a magnetically permeable core comprising a base member extending in a horizontal plane and first, second, third and fourth legs protruding substantially perpendicularly from the base member. First, second, third and fourth output inductor windings are wound around the first, second, third and fourth legs, respectively. A first input conductor of the integrated magnetics component has a first conductor axis and extends in-between the first, second, third and fourth legs to induce a first magnetic flux through a first flux path of the magnetically permeable core. A second input conductor of the integrated magnetics component has a second coil axis extending substantially perpendicularly to the first conductor axis to induce a second magnetic flux through a second flux path of the magnetically permeable core extending substantially orthogonally to the first flux path. Another aspect of the invention relates to a multiple-input isolated power converter comprising the integrated magnetics component.

A differential circuit comprises first and second differential pairs driven by constant-current sources, respectively, for receiving input voltages, first transistors, second transistors, and switches are included. In a first connection state, one current mirror comprises among the first transistors. Input and output terminals of the one current mirror are connected to outputs of the first differential pair. Two current mirrors are composed by the second transistors. Inputs of the two current mirrors are connected to the outputs of the second differential pair, and the outputs of the two current mirrors are connected to an input and an output of the one current mirror circuit. The output of the one current mirror is a first output. In a second connection state, one current mirror comprises among the second transistors. The input and the output of the one current mirror are connected to the outputs of the second differential pair. Two current mirrors are composed by the first transistors. The inputs of the two current mirrors are connected to the outputs of the first differential pair, and the outputs of the two current mirror circuits are connected to the input and the output of the one current mirror circuit, respectively. The output terminal of the one current mirror is a second output terminal.

An electrostatic clutch is described comprising a plurality of micron-scale thickness electrodes, adjacent electrodes being separated by a thin film of dielectric material. A power source and controller apply a voltage across two electrodes, causing an electrostatic force to develop. When engaged, a force can be transferred through the clutch. A tensioning device maintains the alignment of the clutch when the electrodes are disengaged, but permits movement in at least one direction. In some embodiments, multiple clutches are connected to an output to provide variable force control and a broad range of torque input and output values. Moreover, the clutch can be used as an energy-recycling actuator that captures mechanical energy from negative work movements, and returns energy during positive work movements.

The invention discloses a self-compensating robot tail end six-dimensional torque transducer collecting system and a zero-drift compensating method and zero-drift obtaining method thereof, and belongs to the field of information collection of robot transducer systems. In order to solve the problem that the degree of accuracy of collected data of an existing robot tail end six-dimensional torque transducer collecting system is low, a force moment signal and a temperature signal which are input by the collecting system undergo information conditioning, collecting and signal processing in sequence, and a signal processor enables the data of a transducer combined with a temperature drift curve to be compensated to a force moment signal input module; a digital analog converter is used for converting a zero-drift compensating voltage output by the signal processor into an analog signal to be input to the force moment signal input module, and the signal processor conducts data exchange with an upper computer through a communication module. The zero-drift compensating method is realized by the way that the zero-drift compensating voltage or the resistance of the force moment signal input module is adjusted to meet the fixed formula requirement. The self-compensating robot tail end six-dimensional torque transducer collecting system and the zero-drift compensating method and zero-drift obtaining method thereof are used for signal collection of robot tail end six-dimensional torque transducers.

An electrostatic clutch is described comprising a plurality of micron-scale thickness electrodes, adjacent electrodes being separated by a thin film of dielectric material. A power source and controller apply a voltage across two electrodes, causing an electrostatic force to develop. When engaged, a force can be transferred through the clutch. A tensioning device maintains the alignment of the clutch when the electrodes are disengaged, but permits movement in at least one direction. In some embodiments, multiple clutches are connected to an output to provide variable force control and a broad range of torque input and output values. Moreover, the clutch can be used as an energy-recycling actuator that captures mechanical energy from negative work movements, and returns energy during positive work movements.

The present invention discloses a starting circuit of a PWM chip of a super-wide voltage auxiliary power supply. The circuit comprises a voltage switching switch circuit, a voltage detection circuit and a charging circuit; the voltage switching switch circuit comprises a MOS tube Q1, a resistor R4 and a resistor R5; the voltage detection circuit comprises a MOS tube Q2, a resistor R7 and a resistor R8; and the charging circuit comprises a resistor R1 and a resistor R2. The starting circuit of the PWM chip of the super-wide voltage auxiliary power supply can provide stable charging current for the PWM chip VCC no matter how the input voltage is changed, the relative change amount is small; and when the power supply generates faults, the chip can restarted and cannot enter a locking state, after the faults are eliminated, the chip can be restarted with no need for power-off restarting, especially the circuit works in the ultrahigh voltage, the circuit loss is less than the loss of a routine circuit.

For controlling a switch power supply, an adjustment module produces a first control voltage by comparing a period of a switch signal with a reference period. A current source module generates a first charging current according to the first control voltage. A pulse signal generating module converts the first charging current into an on time signal or off time signal of a switch transistor. A driving module produces the switch signal according to the on time or off time signal of the switching transistor, so as to control the turn on and turn off signal of a switching transistor. A time measurement module obtains a time parameter according to the switch signal, and generates a periodic adjustment signal according to the time parameter. The adjustment module adjusts the reference period according to the periodic adjustment signal to adjust the period of the switch signal.

The invention relates to a super capacitor charging device. The super capacitor charging device comprises an input control switch unit, an EMI processing unit, a signal collection unit, a driving unit, a control and protection unit, a single-phase input rectification unit, a current feed topology unit and an output switch control unit which are electrically connected. The device charges a super capacitor by adopting a current feed topology structure and voltage mode control and feed-forward compensation control technologies, and can realize a mode of two-section charging for the super capacitor, thereby realizing wide input, high efficiency, low cost, reliable performance and strong applicability of the charging device, and greatly promoting the process of industrialization of the super capacitor. The device provided by the invention is applied to charging of super capacitor banks with wide AC voltage input.

The present invention relates to an integrated magnetics component comprising a magnetically permeable core comprising a base member extending in a horizontal plane and first, second, third and fourth legs protruding substantially perpendicularly from the base member. First, second, third and fourth output inductor windings are wound around the first, second, third and fourth legs, respectively. A first input conductor of the integrated magnetics component has a first conductor axis and extends in-between the first, second, third and fourth legs to induce a first magnetic flux through a first flux path of the magnetically permeable core. A second input conductor of the integrated magnetics component has a second coil axis extending substantially perpendicularly to the first conductor axis to induce a second magnetic flux through a second flux path of the magnetically permeable core extending substantially orthogonally to the first flux path. Another aspect of the invention relates to a multiple-input isolated power converter comprising the integrated magnetics component.

A method of determining a circuit response (such as delay or slew) from a ramp input of an RC circuit calculates two circuit response parameters using a given circuit response metric based on a step input for the RC circuit, and extends the circuit response metric to a ramp input of the RC circuit by combining the first and second circuit response parameters to yield an estimated ramp response. The novel technique is based on the use of probability distribution functions and cumulative distribution functions to characterize the impulse response of the RC circuit, and the calculating steps derive the first and second circuit response parameters from such statistical distribution functions. In particular, the calculating steps may use a standard deviation or a mean of a probability distribution function corresponding to the circuit response parameter. In one application, the invention is used to estimate delay response for the ramp input of the RC circuit. In another application, the invention is used to estimate output slew for the ramp input of the RC circuit. New delay and slew metrics are also disclosed which are derived by matching one or more properties of the network impulse response to a lognormal distribution. For delay, the mean and variance of a probability distribution function (PDF) are correlated to the lognormal distribution. For slew, alternative metrics are provided; one slew metric correlates the mean and variance of the PDF to the lognormal distribution, while a second slew metric correlates the variance and skewness of the PDF to the lognormal distribution.

The invention discloses a power factor correction control circuit and a driving power supply. The power factor correction control circuit comprises a power grid input Vin, a rectifier bridge DB1, a capacitor C1, a capacitor C2, a switching tube S1, a switching tube S2, a switching tube S3, a diode D1, an inductor L1, a resistor R1, a transformer T1, a first output rectification circuit, an outputcapacitor Co, a power factor correction control circuit and a resonance control driving circuit. The power factor correction control circuit and the driving power supply of the invention have the advantages that a circuit device can be prevented from being overstressed, and a power factor correction function is achieved; the circuit is simple and convenient to control; compared with a two-stage circuit, the circuit cost is low; compared with passive charge pump PFC, bus capacitance voltage and power factors can be both taken into consideration; and the power factor correction control circuit and the driving power supply are suitable for wide input and output load ranges.

The invention provides a constant-current-to-constant-voltage conversion topology system and a control method thereof. The constant-current-to-constant-voltage conversion topology system comprises a shunt meter circuit, a first filter circuit, an inverter circuit, a resonance circuit, a high-frequency transformer, a rectifying circuit, a second filter circuit, a voltage and current acquisition circuit, a controller circuit and a driving circuit. The shunt meter circuit is connected with an input current source to realize conversion from a current source to a voltage source, and meanwhile, a higher voltage is generated at the front end. The first filter circuit is connected with the output of the shunt meter, and the LLC resonant circuit is connected with the first filter circuit, is firstly inverted into high-frequency alternating current through the inverter circuit, and then supplies power to a load after being isolated by the resonant circuit and the transformer and rectified and filtered by the rectifying circuit. According to the invention, constant-current to constant-voltage conversion can be realized, and wide input and load changes can be endured. And meanwhile, a switching tube of the post-stage LLC resonant converter can realize ZVS (Zero Voltage Suppressor) opening, and a secondary rectifier diode is also a ZVS switch, so that relatively high efficiency can be achieved.

Disclosed is a power detector. The power detector in which calibration is performed to minimize errors caused by a process variation and a temperature variation in a structure that allows a wide input dynamic range of the power detector at a low supply voltage is provided.

The invention relates to a super capacitor charging device. The super capacitor charging device comprises an input control switch unit, an EMI processing unit, a signal collection unit, a driving unit, a control and protection unit, a single-phase input rectification unit, a current feed topology unit and an output switch control unit which are electrically connected. The device charges a super capacitor by adopting a current feed topology structure and voltage mode control and feed-forward compensation control technologies, and can realize a mode of two-section charging for the super capacitor, thereby realizing wide input, high efficiency, low cost, reliable performance and strong applicability of the charging device, and greatly promoting the process of industrialization of the super capacitor. The device provided by the invention is applied to charging of super capacitor banks with wide AC voltage input.

Disclosed is a power detector. The power detector in which calibration is performed to minimize errors caused by a process variation and a temperature variation in a structure that allows a wide input dynamic range of the power detector at a low supply voltage is provided.

The invention discloses a self-compensating robot tail end six-dimensional torque transducer collecting system and a zero-drift compensating method and zero-drift obtaining method thereof, and belongs to the field of information collection of robot transducer systems. In order to solve the problem that the degree of accuracy of collected data of an existing robot tail end six-dimensional torque transducer collecting system is low, a force moment signal and a temperature signal which are input by the collecting system undergo information conditioning, collecting and signal processing in sequence, and a signal processor enables the data of a transducer combined with a temperature drift curve to be compensated to a force moment signal input module; a digital analog converter is used for converting a zero-drift compensating voltage output by the signal processor into an analog signal to be input to the force moment signal input module, and the signal processor conducts data exchange with an upper computer through a communication module. The zero-drift compensating method is realized by the way that the zero-drift compensating voltage or the resistance of the force moment signal input module is adjusted to meet the fixed formula requirement. The self-compensating robot tail end six-dimensional torque transducer collecting system and the zero-drift compensating method and zero-drift obtaining method thereof are used for signal collection of robot tail end six-dimensional torque transducers.

The invention discloses a starting circuit of a PWM chip of an ultra-wide voltage auxiliary power supply, which comprises a voltage switch circuit, a voltage detection circuit and a charging circuit; the voltage switch circuit is composed of a MOS transistor Q1, a resistor R4 and a resistor R5; the voltage detection circuit consists of The MOS transistor Q2, the resistor R7 and the resistor R8 are composed; the charging circuit is composed of the resistor R1 and the resistor R2. The start-up circuit of the ultra-wide voltage auxiliary power supply PWM chip, no matter how the input voltage changes, the charging current of the PWM chip VCC is stable, and the relative change is small; when the power supply fails, the chip can restart and will not enter In the locked state, after troubleshooting, it can be restarted without power-off and restart, especially when working under ultra-high voltage, the circuit loss is much smaller than that of conventional circuits.

The invention discloses a phase dislocation control single-stage power factor correction control circuit and a switching power supply, and the circuit comprises a power grid input Vin, a rectifier bridge DB, a capacitor C1, a capacitor C2, a capacitor C3, a switching tube S1, a switching tube S2, a switching tube S3, a switching tube S4, a switching tube S5, a switching tube S6, a diode D1, a diode D2, an inductor L1, an inductor L2, a transformer T1, a first output rectification circuit, an output capacitor Co, a power factor correction phase dislocation control circuit and a resonance phasedislocation control drive circuit. The invention has the beneficial effects that circuit device overstress can be prevented, a power factor correction function is achieved, the design of the filter issimplified, and the service life of the capacitor is prolonged; and the circuit is simple, convenient to control and low in cost, can well consider bus capacitor voltage and power factors, and can besuitable for wider input and output load ranges.

The invention provides a balanced type infinitely variable transmission, belongs to the technical field of transmissions and mainly solves the problem that in the prior art, when the function of infinitely variable speeds is achieved, the gear ratio is small, and the functions of a truck or other vehicles requiring big gear ratio can not be satisfied. The transmission comprises a first single-planet-row planet gear mechanism, a double-planet-row planet gear mechanism, a second single-planet-row planet gear mechanism and a damping device, wherein the first single-planet-row planet gear mechanism and the double-planet-row planet gear mechanism use a first planet gear support in common; the damping device is composed of a brake disc and a brake pad; the transmission is characterized in that a single gear ring or a double gear ring is fixedly connected with a planet gear support of the second single-planet-row planet gear mechanism, a sun wheel of the double-planet-row planet gear mechanism is slidably connected with an input shaft through a first shaft sleeve, and a gear ring of the second single-planet-row planet gear mechanism outputs power through an output shaft sleeve which is slidably connected with the input shaft. By means of the transmission, the range of the gear ratio of input and output is wider.

Proposed is a haptic reactive electrical switch including: a movable part including a floating panel having a touch area to which a user's touch is input and a holder coupled to the floating panel; a fixed part including a substrate and a casing configured to accommodate the substrate and be provided with at least two damping members; a vibration transmission plate configured to be interposed between the holder and the casing, thereby interconnecting the movable part and the fixed part; and an actuator configured to be operated to vibrate the holder and the vibration transmission plate coupled to the holder in a horizontal direction according to a user's touch input, wherein each of the damping members is configured in a form of a single object integrated into the casing, and an end part of one side thereof protrudes to a portion above the casing.