55results about How to "Avoid serious deviation" patented technology

An optical scanning characteristic control method is applied to an optical scanning system in which a beam is deflected, and the deflected beam is converged and directed toward a scanning surface, so that optical scanning of the scanning surface is performed by an optical spot formed thereon by the deflected beam. The method comprising the steps of a) disposing a beam deflection control device on the light path of the beam before it is incident on the scanning surface; and b) controlling a beam deflection amount of the beam deflecting device provide to an incident beam so as to control a scanning characteristic of the optical scanning.

The invention relates to a device (10) for the additive manufacture of a component (12), comprising at least one coating device (14) for producing a powder layer (16) on a construction platform (18); at least one radiation source (20), in particular a laser, for producing a high-energy beam (24), by means of which the powder layer (16) in a construction surface area (22) can be melted and/or sintered locally to form a component layer (30); at least one deflection device (26), by means of which the high-energy beam (24) can be deflected onto different regions of the powder layer (16) and can be focused on the construction surface area (22); at least one measurement system (28), by means of which a cross-sectional geometry of the high-energy beam (24) on the powder layer (16) and/or the component layer (30) can be determined; and at least one equilibration device (32).

A device for use in constructing a breathing circuit has at least a first tube and a filter; the filter has a proximal and a distal end; the first tube is attached to the filter distal end. A second tube can be attached to the filter proximal end, wherein the second tube can be detached from the filter for reuse in a breathing circuit formed with the foregoing components. The filter and the first tube may be disposed of after a single use. The first tube has a length sufficient to maintain the filter at a desired distance from a patient airway device when connected thereto. In a preferred embodiment, a fresh gas outlet is provided at the distal end of the first tube resulting in minimal or substantially no mixing space in the circuit, while the disposable first tube and filter create less medical waste than that created by prior art circuits. Mixing space refers to space distal of the fresh gas outlet into the circuit where the fresh gases can mix with recirculated or other gases. In embodiments, the mixing space is less than 15 cm³ or less than about 5 cm³, and the distal disposable filter and tube device is less than 50 cm in length.

A method and a device for determining the rotor temperature in a permanent-magnet-excited synchronous machine are described, in which field-oriented regulation takes place. An estimator is provided which is supplied with the manipulated variables for the direct-axis current and the cross current made available by a direct-axis current controller and a cross current controller. The estimator determines an estimate for the rotor temperature using the manipulated variables mentioned and a temperature model of the synchronous machine.

A sprocket of a chain transmission for a bicycle is described, intended to be coupled with a further sprocket with a smaller diameter in a group of sprockets integral in rotation. The sprocket comprises a plurality of teeth which follow each other on the sprocket separated by spaces according to a direction of rotation of the sprocket, in which each tooth has a thickness, a width and a height and has a lead side, a following side, a front side and a rear side. The sprocket has a front bevel on at least one tooth of first disengagement of said plurality of teeth and a rear bevel (60) on at least one tooth of last engagement of said plurality of teeth.

An electric motor includes a stator made up of individual segments disposed in the circumferential direction, each individual segment including a core stack around which a winding is provided and at whose axial terminal regions end caps are provided, the winding being produced by a winding wire, an end cap including at least one dome, in particular for delimiting the region of the winding, a wire inlet duct for rerouting the winding wire being provided in the base region of the dome, grooves being provided on the end cap, the distance of one groove with respect to the radially following groove and the diameter of the curvature of the respective groove being smaller than the diameter of the winding wire.

The invention relates to an automatic-deviation-rectification, constant-speed and constant-tension rewinding machine. A magnetic powder brake and a cantilever unwinding inflation shaft are mounted on a rack; an unwinding membrane passes through an unwinding force sensor roll and an unwinding guide roll, and is delivered into a membrane processing device to form an unwinding tension control device; a screw rod sliding table and a stepping motor are fixed on the rack; a variable frequency motor, a magnetic powder clutch and a cantilever winding inflation shaft are fixed on the surface of the screw rod sliding table; a winding membrane sequentially passes through a photoelectric position sensor, a winding force sensor roll and an encoder roll, and finally passes into the membrane processing device to form a device for controlling winding tension, winding speed, deviation rectification and the like; and an unwinding force, winding force and deviation rectification controller with a program-controlled preset value is utilized to control constant tension of the membrane, and to rectify deviation automatically. The programmable logic controller (PLC), a frequency converter and the variable frequency motor are arranged to control the transmission of the membrane at the constant speed. The machine achieves multifunctional control, solves the problems of high stress deformation, non-uniform viscosity, the deviation and the like, is high in quality and efficiency, simple, reasonable in design, and convenient to operate and maintain, and is particularly applicable to rewinding of a polytetrafluoroethylene adhesive tape coil.

A method is provided for monitoring a state of health of a vehicle system and includes measuring a plurality of parameter values for the system at different running conditions as an end of line test, storing the parameter values in a fingerprint file, measuring the same plurality of parameter values that is comprised in the fingerprint file after a predefined time interval, adding a predefined, ageing offset to the fingerprint file, where the ageing offset corresponds to a predicted wear of the system during the predefined time interval, thereby obtaining a time modified fingerprint file for the system, comparing the measured values with the time modified fingerprint file, and issuing a message if the measured values deviates from the time modified fingerprint file. The state of health can be compared with initial measurements such that the state of health of a vehicle system or component can be monitored over a longer time period.

The invention provides a driving planning method and device for an automatic driving vehicle and the automatic driving vehicle, and relates to the technical field of automatic driving. The driving planning method comprises the steps of obtaining a global planning path of the automatic driving vehicle; segmenting the global planning path to obtain a plurality of segmented planning paths; controlling the automatic driving vehicle to travel according to each segmented planning path in sequence, and monitoring deviation condition data of the automatic driving vehicle at the end point of each segmented planning path; and re-planning the global planning path of the automatic driving vehicle according to the deviation condition data of the automatic driving vehicle. Therefore, the driving condition of the automatic driving vehicle can be considered in real time, the automatic driving vehicle is prevented from seriously deviating from the originally planned path, and the driving accuracy of the automatic driving vehicle can be ensured.

A method for determining the efficiency of an electric energy system of a hybrid vehicle includes determining a measure representative of a relation between the electrical, brake energy and the mechanical brake energy, by determining a requested brake energy for a first vehicle retardation, and by determining an actual electrical brake energy and the actual mechanical brake energy during the vehicle retardation, determining a new measure representative of a relation between the electrical brake energy and the mechanical brake energy at a subsequent second similar vehicle retardation, comparing the determined measures representative of a relation between the electrical brake energy and the mechanical brake energy of the first and second vehicle retardations, where the actual efficiency of the energy system is obtained from the change in the measure representative of a relation between the electrical brake energy and the mechanical brake energy of the first and second vehicle retardations.

The invention discloses a high voltage direct current system control method. VDDCFP is arranged after a VDCOL controller. A VDDCFP control process comprises the steps that S1, three-phase voltage amplitude of an inverter side is monitored in real time, and the voltage value of each sub harmonic of a voltage instantaneous value through Fourier decomposition; S2, voltage distortion current limiting is carried out, namely the harmonic distortion rate is calculated through the voltage amplitude of each sub harmonic after Fourier decomposition, and the maximum harmonic distortion rate in three-phase voltage is taken as a feedback signal; S3, direct current deviation current limiting is carried out, namely the difference between a direct current instantaneous value Id and a rated value Id_ref is calculated in a direct current setting value, and the difference is used as an input signal with the feedback signal in step S2 in a gain process; and S4, an optimizing algorithm is used to select the appropriate gain size. According to the invention, when the harmonic distortion rate of commutation bus voltage is high, direct current is reduced; and commutation is failed due to insufficient influence of harmonics on commutation voltage time area.

The invention discloses a method for improving roller surface temperature uniformity. The method includes controlling a cooling medium to enter a cooling path in a roller from one of two ends at the axial direction of the roller in an alternative inverting manner, and to be discharged from the other end. A system for improving roller surface temperature uniformity comprises the roller, a gas feeding pipe and a gas discharging pipe, wherein the cooling medium path extending at the axial direction of the roller is disposed in the roller, two ends of the cooling medium path are provided with a cooling medium inlet and a cooling medium outlet, the gas feeding pipe is alternatively connected to the cooling medium inlet at one of the two ends of the cooling medium path, and when the gas feeding pipe is alternatively connected to the cooling medium inlet at one of the two ends of the cooling medium path, the gas discharging pipe is communicated with the cooling medium outlet at the other end of the cooling medium path. The system and the method can improve roller surface temperature uniformity and improve roller surface temperature symmetry.

A zoom lens device is reduced in size and capable of zoom operation with the number of steps large enough to display the value as a zoom lens. The zoom lens device comprises lens system (A) with a first lens group, a second lens group, and a third lens group arranged on optical axis (Z). It comprises zoom mechanism (E) for changing the focal distance of lens system (A) by changing the second lens group in the direction of optical axis (Z). It comprises focus mechanism (C) for adjusting the image forming position of lens system (A) by moving the third lens group13 in the same direction as optical axis (Z). It also comprises driving force transmitting section (B) for transmitting the driving force from the motor to zoom mechanism (E) and focus mechanism (C). Driving force transmitting section (B) includes stopwork (D) like Geneva drive (F) for intermittently transfer the driving force from the driving source to zoom mechanism (E).

The invention relates to a transportable packaging unit (10), having a packaging content (11), a covering (12) surrounding the packaging content (11) and connecting means (15a-d) connecting the packaging content (11) and the covering (12). The covering (12) has an outer shape which can roll. A packaging unit which is particularly simple and flexible to use is achieved such that the connecting means (15a-d) fix the content of the packaging (11) in the covering (12).

For producing a cylindrical surface that has a surface structure of predetermined geometry suitable for application of material by thermal spraying, a geometrically predetermined groove structure of minimal depth and width is introduced into the surface by a tool embodied as a follow-on tool in that a groove cross-section is processed successively to a final size. In order for the surface to be producible in mass production with constant quality, the groove structure is worked in such that first a base groove is introduced with a groove bottom width that is smaller than the groove bottom width of the finished groove. Subsequently, at least one flank of the base groove is processed for producing an undercut groove profile by a non-cutting action or cutting action wherein the introduced groove structure is deformed in such a way that the groove openings are constricted by upsetting deformations of material.

A control method for a viscous semi-liquid frozen or hot food dispenser comprising a stirring means configured to stir the food, a motor (50) configured to drive the stirring means to rotate, a refrigerating means or heating means configured to input cold energy or heat energy into the food, a rotation speed sensor (80) configured to detect a stirring speed, and a temperature sensor (13) configured to detect the food temperature, the control method comprising the steps of: a) refrigerating or heating the food by the refrigerating means or heating means; b) comparing the food temperature detected by the temperature sensor (13) with a target preset value of the food temperature, and determining to continue the refrigeration or heating, or to stop the refrigeration or heating and to keep stopping for a preset time; c) intervening by corresponding adjustment of the target preset value when a data set collected from the rotation speed sensor (80) shows that change trend of the rotation speed meets predefined intervention conditions; and d) returning to step a) for the next cycle. The control method for a viscous semi-liquid food dispenser is capable of controlling viscosity of food accurately and reliably to maintain consistence of the characteristics of the dispensed product and minimize the influence from the environment as much as possible.

A MATZHU is prepared by using leaves of Gramineae (Graminae) and Bambusoideae plant as raw materials. The MATZHU has a stable emerald color and an average powder particle size of 800 to 10,000 meshes. The MATZHU also has a total amount of dietary fiber of ≥60%, a content of lignin of ≥20% and a content of minerals of ≥7%. The MATZHU includes at least three or more bamboo leaf characteristic components, such as orientin, isoorientin, vitexin, isovitexin, adenosine, δ-hydroxylysine and p-coumaric acid. The method for the MATZHU preparation includes, in turn, performing blanching and color protection, drying and superfine grinding the raw materials. By utilizing the thermal stability and the light stability of the MATZHU, the MATZHU may be used as a raw food material, a functional ingredient, or a dietary supplement.