36results about How to "Guaranteed decoupling" patented technology

The invention discloses a two-freedom degree motion-decoupling flexible hinge mechanism. The mechanism comprises a flexible hinge matrix and a driving branched chain. The flexible hinge matrix comprises flexible hinge branched chains and a rigid connection member. The rigid connection member comprises a terminal rigid output platform located in the middle of the flexible hinge matrix, and upper, lower, left and right rigid platforms respectively located at upper, lower, left and right parts of the flexible hinge matrix. The upper, lower, left and right rigid platforms are respectively connected to the terminal rigid output platform by the flexible hinge branched chains and are respectively connected to the rigid matrix of the flexible hinge matrix by the flexible hinge branched chains. The two-freedom degree motion-decoupling flexible hinge mechanism realizes decoupling of motion and forces of the terminal along all directions and is conducive to improvement of a motion precision.

An antenna configuration for use in a magnetic resonance apparatus has at least two individual antennas which each include at least one conductor loop, one tuning network and one matching network, wherein the individual antennas are each combined into separate modules which are positioned on and mounted to a support body and can be removed therefrom in a non-destructive fashion, is characterized in that the individual antennas are connected to each other through decoupling elements, wherein the decoupling elements are mounted to the support body in an undetachable fashion. It is thereby possible to define individual antenna modules which can be arranged in a simple fashion around the measuring volume, are also electromagnetically decoupled from each other, and can be positioned close to the measuring volume in order to ensure that the received MRI image has a maximum, high signal-to-noise ratio.

The comprehensive intelligent temperature control method for glass kiln is to use industrial control computer in detecting and regulating oil returning valve and oil feeding valve opening and oil pressure. Based on practical temperature inside kiln and oil viscosity, the present invention determines the oil pressure value to reach the required temperature with the nerve network-I. In order to reduce the effect of varying oil feeding valve, the present invention determines the compensation value of the oil returning valve opening with the nerve network-II. The present invention realizes the effective control of kiln temperature through the separate compensation of oil quality fluctuation and oil feeding valve on the oil pressure and the double control of temperature and oil pressure with two independent closed loops.

The invention discloses a two-degree-of-freedom scott-russell flexible micro-nano positioning platform. The invention adopts piezoelectric ceramics with high natural frequency as the driving element, and at the same time, in order to maintain good decoupling performance when realizing a large output displacement, A bridge-type amplifying mechanism with a large amplification ratio and good decoupling is used as the primary displacement amplifying mechanism. The present invention introduces the scott-russell mechanism as the secondary displacement amplification mechanism, adopts the scott-russell mechanism as the displacement amplification mechanism, and has the characteristics of superior motion decoupling performance and good guiding performance; the present invention introduces cross-shaped decoupling structures evenly distributed in the center of the movement Around the platform, the stiffness of the cross-shaped decoupling structure is small in the target motion direction, and relatively large in the non-target motion direction, which is not only conducive to output displacement, but also has good decoupling performance. Ensure high positioning accuracy.

The invention relates to a stator resistance and rotational speed parallel decoupling identification method of an induction motor. In an existing stator resistance on-line identification method of a speed-less sensor induction motor, the problem of inaccuracy observation value during light load and no load exists. The stator resistance and rotational speed parallel decoupling identification methodof the induction motor comprises the steps of 1, designing a relation between a rotor magnetic flux error and a stator current error; 2, decoupling a stator resistance error part in the stator current error by employing the relation between the rotor magnetic flux error and the stator current error; 3, determining stator resistance self-adaption rate and induction motor rotor rotational speed self-adaption rate; and 4, estimating a stator resistance value of the induction motor by a PI regulator. By the stator resistance and rotational speed parallel decoupling identification method, the observation precision and accuracy of stator resistance during light load and no load is improved.

The invention discloses a frequency-adjustable micro-scanning reflector and application thereof in fluorescence imaging. The frequency-adjustable micro-scanning reflector comprises a reflector, and is characterized in that the reflector comprises an inner shaft for rotating the reflector up and down and an outer shaft for rotating the reflector to the left and the right, and is also provided with a first group of comb-shaped driving devices for driving the inner shaft to rotate and a second group of comb-shaped driving devices for driving the outer shaft to rotate, the first group of comb-shaped driving devices comprise a plurality of stator comb teeth fixed around the inner shaft and a plurality of rotor comb teeth capable of being revolved around the inner shaft by a certain angle, the second group of comb-shaped driving devices comprise a plurality of stator comb teeth fixed around the outer shaft and a plurality of rotor comb teeth capable of being revolved around the outer shaft by a certain angle, the stator comb teeth and the rotor comb teeth are staggered and distributed at intervals, and both the inner shaft and the outer shaft are provided with thermoelectric heaters for tuning the reflector. The invention has the advantage that the scanning frequency, amplitude and phase of the micro-scanning reflector can be adjusted, and while energy consumption is less, optical resolution cannot be decreased and the field of view cannot be reduced.

The invention discloses a transmission wavefront adjustment device, which comprises: a parallelogram mechanism, a flexible hinge, a flexible moment applying mechanism, a linear drive mechanism and a support, one side of the parallelogram mechanism is connected with one side of a mirror surface, and the parallelogram The other side of the mechanism is connected to the flexible moment applying mechanism, and the side of the parallelogram mechanism connected to the flexible moment applying mechanism is hinged on the support through a flexible hinge, and the linear drive mechanism is used to control the up and down deformation of the flexible moment applying mechanism, and then An edge moment is applied to the mirror by a parallelogram mechanism. Among them, through the flexible torque application mechanism, not only the linear motion of the linear drive mechanism can be converted into torque, but also has the characteristics of motion decoupling. In addition, through the parallelogram mechanism, the decoupling of the applied torque can be guaranteed, that is, no additional motion is added, and the torque is simply applied. Secondly, flexible hinges are used to ensure that the system has no empty back, hysteresis, etc., thereby improving the calibration accuracy.