36 results about "Leaf inclination angle" patented technology

A blade-pitch-angle control device includes a memory unit in which predetermined parameters that affect the load fluctuation of blades, azimuth angles, and pitch-angle command values are stored in association with each other; an azimuth-angle detecting unit that detects the azimuth angle of each of the blades; a parameter-detecting unit that detects the predetermined parameters; a command-value receiving unit that receives pitch-angle command values for each of the blades from the memory unit, the pitch-angle command values being selected on the basis of the azimuth angle of each blade detected by the azimuth-angle detecting unit and the predetermined parameters detected by the parameter-detecting unit; and a pitch-angle-control command-value generating unit that generates pitch-angle-control command values for individually controlling the pitch-angle of each blade on the basis of the pitch-angle command values and a common-pitch-angle command value.

Disclosed are method and apparatus for controlling the blade elevation and blade slope angle of a dozer blade. Elevation and slope angle measurements are calculated from measurements received from a global navigation satellite system (GNSS) antenna and an inertial measurement unit mounted on the dozer blade. The inertial measurement unit includes three orthogonally placed accelerometers and three orthogonally placed rate gyros. The measurements are processed by algorithms to calculate estimates of the blade elevation, blade vertical velocity, blade slope angle, and blade slope angular velocity. These estimates are then provided as inputs to a control algorithm which provides control signals to control a dozer hydraulic system which controls the blade elevation and blade slope angle.

The present invention relates to a system for the monitoring of the wind incidence angle and the control of the wind turbine. A wind turbine includes a control system and at least one wind turbine blade having a pressure measurement system is disclosed. The pressure measurement system includes a pressure probe that provides a measurement of inflow angle to the control system. The control system adjusts the blade pitch angle of the at least one turbine blade in response to the inflow angle measurement to improve energy capture. The pressure probe is mounted by a probe support structure at a predetermined position from the leading edge of the at least one wind turbine blade.

On a dozer, a semi-automatic system automatically translates a joystick to control blade elevation and provides an indicator display to guide manual control of blade slope angle. A mechanical linkage operably couples the joystick to an electrical motor. A computational system receives measurements from measurement units mounted on the dozer; calculates estimated values of elevation and slope angle; compares the estimated values to reference values; and calculates error and control signals. Drivers generate a motor drive signal and a display drive signal. In response to the motor drive signal, the electrical motor translates the joystick to control elevation. In response to the display drive signal, the indicator display generates a graphical representation of the status of slope angle. When the operator needs to take manual control, a proximity sensor detects the presence of at least a portion of the operator's hand, wrist, or forearm and disengages automatic control of elevation.

A blade inclination angle adjustable and anti-slide abrasion-resisting reducing pitch adjusting detachable delivery pump screw shaft is composed of nine different detachable blade assemblies, a bladeinclination angle adjusting structure, a blade positioning structure, a rotary shaft, a tail end baffle and a vacancy filling plate. The nine different detachable blade assemblies cooperate with one another to form a reducing pitch adjusting spiral shaft structure, the blade inclination angle adjusting structure is adopted, different blade inclination angles can be adjusted according to needs, andthe material blockage situation is greatly improved; the detachable blade assembly structure is adopted, blade installing, demounting and maintaining are very convenient, and the cleaning difficultyof blades is greatly lowered; and the blades are provided with a plurality of grooves and lugs which are all in different shapes and are arrayed in a stagger manner, material sliding is prevented, andthe blade is provided with arc-shaped anti-abrasion ribs so that the blade abrasion situation can be improved. By means of the blade inclination angle adjustable and anti-slide abrasion-resisting reducing pitch adjusting detachable delivery pump screw shaft, the material blockage, sliding, abrading and other problems in the running process of a screw conveying pump are solved, the working performance is improved, and the service life is prolonged.

The present invention relates to F-BOX protein for regulating leaf inclination and application thereof. The present invention discovers for the first time that the F-BOX protein can regulate the leaf inclination angle of gramineous plants. By knocking out or down-regulating the F-BOX gene, the leaf inclination angle can be reduced, the plant type can be optimized, and then reasonable dense planting can be realized, and the yield per unit area can be increased. The F‑BOX gene can be applied to the molecular breeding of erect plant type to select high-yield varieties.

The invention discloses a method for measuring the stress state of plant water, which comprises the following steps: S1: determinating the scanned range and the sampling point of the plant to be measured and constructing an x y rectangular coordinate system within the determinated scanned range; S2: acquiring a height value d x y of the sampling point in the scanned range; S3: setting a height threshold D, combing the height value d x y of the sampling point, and extracting the sampling point positioned on the leaf of the plant to be measured; S4: reconstructing a three-dimensional space shape and calculating the three parameters of the average height h0 of the leaf, the inclination angle Alpha of the leaf and the area of the leaf s0 on the basis of combing the x y coordinate system constructed in the S1 and the height value of the extracted sampling point positioned on the leaf of the plant in the S3; and S5: according to the three parameters of the average height h0 of the leaf, theinclination angle Alpha of the leaf and the area of the leaf s0, and floristics to be measured, judging the water loss of the current plant. The invention can directly measure plant morphological characteristics, and has simple operation process, low degree of operation difficulty and the effect of small measurement error.