112results about How to "Simple control mechanism" patented technology

Disclosed is a walking robot having an improved driving structure for a pitch-direction femoral joint and a knee joint. The walking robot includes a pitch-direction actuator driving the pitch-direction femoral joint to rotate a femoral link relative to a body in a pitch direction, and a power transmission unit transferring driving force of the pitch-direction actuator to the knee joint to rotate the lower leg link relative to the femoral link in the pitch direction.

Disclosed is a walking robot having an improved driving structure for a pitch-direction femoral joint and a knee joint. The walking robot includes a pitch-direction actuator driving the pitch-direction femoral joint to rotate a femoral link relative to a body in a pitch direction, and a power transmission unit transferring driving force of the pitch-direction actuator to the knee joint to rotate the lower leg link relative to the femoral link in the pitch direction.

The AC power generated by AC utility has been successfully transferred from AC-to-DC by means of an AC-to-DC converting circuit. This disclosure provides an AC-to-DC converting circuit applicable to a power-charging module, and the AC-to-DC converting circuit comprises two parts such as a first stage being a low-frequency AC to high-frequency AC converter comprising an input full-bridge rectifier, a full-bridge inverter and an immittance conversion circuit and a second stage being an AC-to-DC converter comprising a single-phase transformer and a full-bridge rectifier, where the inverter in the first stage is switched at high frequencies so as to reduce the size of the transformer in the second stage. Additionally, the immittance conversion circuit is further characterized in voltage to current conversion so as to simplify the control mechanism of the power-charging module, reduce the number of current measuring elements and the cost thereof.

A method of controlling a controllable device related to a building aperture, whereby a climate related characteristic for the aperture is adjusted by the device, and whereby the device is controlled in accordance with a climate and comfort program which is dependent on a control parameter, whereby the device is controlled in accordance with a time schedule provided by the climate and comfort program.

A high chair for a child with a simple control mechanism for adjusting the inclination of the backrest, including a foldable frame work, a seat portion, a backrest, an adjusting mechanism movable along the backrest, and a connecting element pivitolly interconnected between the adjusting mechanism and the foldable frame work. The adjusting mechanism can be manipulated to move along the backrest and carries the connecting element to pivotally change to different inclination angles, so as to support the backrest at different inclination angles.

The invention provides an electric control scanning waveguide leaky-wave antenna based on liquid crystal, belongs to the technical field of microwave antenna engineering, and aims at solving problems that a conventional electric control scanning leaky-wave antenna based on a varactor and other conventional electrically controlled elements is difficult to work at a microwave high-frequency band, and existing liquid crystal electric control scanning leaky-wave antennas require the special design of a bias circuit. The electric control scanning waveguide leaky-wave antenna comprises a top part dielectric plate layer, a metal layer, an insulation paste layer, a liquid crystal layer and a bottom part waveguide slot. The metal layer is arranged at the lower surface of the top part dielectric plate layer. The metal layer has a leaky-wave structure with etching of periodic transverse seams. Equivalent series inductance of electromagnetic wave is enabled to be increased by the periodic transverse seams when electromagnetic wave is transmitted between the bottom part waveguide slot and the metal layer. The metal layer is provided with N periodic seam units. Seam unit spacing distance p is from lambdag / 2 to lambdag. The seams of the middle part are main radiation units. Seam length l of the main radiation unit is from lambdag / 4 to lambdag / 2. The former four and the latter four seams are auxiliary radiation units.

A processor for performing a Fast Fourier Transform and / or an Inverse Fast Fourier Transform of a complex input signal comprises a first stage for passing the input signal to a second stage when a Fast Fourier Transform procedure is to be performed and for swapping the real and imaginary components of the complex input signal before passing the signal to the second stage if an Inverse Fast Fourier Transform procedure is to be performed. The second stage has first and second radix-4 butterfly elements. A third stage is arranged to switch between first and second operating modes, the second operating mode being for processing a complex conjugate symmetrical input signal. A fourth stage has a plurality of processing units, one or more of the processing units comprising a radix-2 pipelined Fast Fourier Transform processor. The first and second radix-4 butterfly elements are arranged to perform a butterfly operation on the complex input signal to generate and deliver one or more components of a processed signal to the fourth stage. The fourth stage is arranged to process the processed signal received from the first stage according to a Fast Fourier Transform processing procedure to produce an output signal. There is also disclosed a method for performing a Fast Fourier Transform and / or Inverse Fast Fourier Transform of a complex input signal.

The present invention provides a controller and method for controlling interfacing to a data link, the data link enabling data items relating to a number of data elements to be transferred in corresponding data slots of the data link. The controller comprises at least one channel, each channel comprising a data buffer for storing data items, and a control register associated with the data buffer and arranged to store control data. The control data is settable to define for which data element or data elements data items are to be stored in that data buffer. Further, an interface mechanism is provided for controlling the transfer of data items between the at least one channel and the data slots of the data link in dependence upon said control data. This enables a generic controller to be developed, which is of an acceptable size and cost.

The present invention provides a diffraction grating element that allows the temperature control mechanism to be dispensed with or simplified. The diffraction grating element of the present invention comprises a transparent plate having a first surface and a second surface that are substantially parallel with one another; and a diffraction grating which is formed on a first surface side with respect to the second surface and is substantially parallel with the first surface. At any temperature within a temperature range −20° C. to +80° C., the sum of the rate of change in the period per unit length of the diffraction grating with respect to a temperature change, and the temperature coefficient of the refractive index of a medium that surrounds the diffraction grating element is 0.

The invention provides an electric control zero crossing scanning waveguide leaky-wave antenna based on liquid crystal, belongs to the technical field of microwave antenna engineering, and aims at solving problems that a conventional electric control scanning leaky-wave antenna based on a varactor and other conventional electrically controlled elements is difficult to work at a microwave high-frequency band, and zero crossing scanning of existing liquid crystal electric control fixed-frequency scanning leaky-wave antennas is not easy to realize and the special design of a bias circuit is required. The electric control zero crossing scanning waveguide leaky-wave antenna comprises a top part dielectric plate layer, a metal layer, an insulation paste layer, a liquid crystal layer and a bottom part waveguide slot. The metal layer is arranged at the lower surface of the top part dielectric plate layer. The metal layer has a leaky-wave structure with etching of periodic transverse seams and longitudinal seams. Equivalent series inductance of electromagnetic wave is enabled to be increased by the periodic transverse seams when electromagnetic wave is transmitted between the bottom part waveguide slot and the metal layer. Equivalent parallel induction of electromagnetic wave is enabled to be increased by the periodic longitudinal seams when electromagnetic wave is transmitted between the bottom part waveguide slot and the metal layer. The metal layer is provided with N periodic seam units and two conduction bands. The N periodic seam units include two groups of longitudinal seam columns and a group of transverse seam columns.

The invention discloses a home environment health control method based on fuzzy intelligent behavior simulation. The home environment health control method is characterized by comprising the following steps that a home environment health control device is constructed, a health fuzzy control mathematic model is built, the health fuzzy control mathematic model is input into a single chip microcomputer fuzzy controller, the indoor environment is collected and transmitted to the single chip microcomputer fuzzy controller, the single chip microcomputer fuzzy controller performs fuzzy reasoning calculation to obtain fuzzy comfort control output response values, and the values are transmitted to a drive executing mechanism. The home environment health control method resolves the problems that indoor health cannot be directly measured, and hardware circuits are complex. The home environment health control method has the advantages of being simple in control mechanism, scientific and effective in control method, simple in hardware circuit and the like, and is convenient to popularize and use during practical application.

The invention provides a liquid crystal electric control zero crossing scanning leaky-wave antenna based on half-mode pectinate line waveguide, belongs to the technical field of microwave antenna engineering, and solves problems that an electric control scanning leaky-wave antenna of conventional electrically controlled elements is difficult to work at a microwave high-frequency band. The liquid crystal electric control zero crossing scanning leaky-wave antenna comprises a top part dielectric plate layer, a metal layer, a liquid crystal layer and a bottom part waveguide slot. The metal layer is arranged between the top part dielectric plate layer and the bottom part waveguide slot. The bottom part waveguide slot has a longitudinal slot structure arranged at the upper surface of a rectangular plate. The liquid crystal layer is arranged in the longitudinal slot. The metal layer has a half-mode pectinate line waveguide structure. N periodic seam units are arranged between the column of pectinate teeth and the longitudinal edge of the opposite side of a rectangular waveguide frame in a rectangular waveguide frame area. The N periodic seam units include a group s longitudinal seam columns and a group of transverse seam columns. The transverse seam columns are arranged between the longitudinal seam columns and the pectinate teeth. Equivalent series inductance of electromagnetic wave is enabled to be increased by the periodic transverse seams and equivalent parallel induction is enabled to be increased by the periodic longitudinal seams when electromagnetic wave is transmitted between the bottom part waveguide slot and the metal layer.