36results about How to "Guaranteed decoupling" patented technology

The invention discloses a method and device for aiming at and fetching a columnar micro-part on the basis of the microscopic vision. The device comprises four motion platforms, two paths of orthogonally-arranged microscopic vision systems, a gripper, a vacuum generator and a computer, wherein each path of microscopic vision system is installed on the six-degree-of-freedom motion platform; the gripper is installed on the three-degree-of-freedom motion platform; and the columnar micro-part is arranged on the six-degree-of-freedom platform. The method comprises the following steps of: firstly, the gripper enters the visual field of the microscopic vision systems; by taking the gripper as the standard, the poses of the orthogonally-arranged microscopic vision systems are regulated; then, the gripper is exited; the columnar micro-part enters the visual field; the gesture of the columnar micro-part is regulated; and under the guidance of the vertically-downward microscopic vision systems, the gripper approaches to the columnar micro-part and fetches the columnar micro-part in a vacuum adsorption mode. According to the invention, the decoupling of a camera coordinate system and a motion coordinate system is realized, the parameter of the camera does not need to be calibrated, and the microscopic vision systems do not need to be focused for several times, thereby being convenient to apply.

The invention relates to an apparatus and method of improving spacecraft attitude stability, belonging to the spacecraft attitude dynamics and vibration inhibition field. The framework bearing of each SGCMG is provided with a vibration isolation element; each vibration isolation element includes a plurality of metal springs respectively in connection with the internal wall and the external wall of the vibration isolation element through spherical hinges. The internal wall of the vibration isolation element sleeves the framework bearing of an SGCMG so as to be in connection with the framework bearing of the SGCMG; the external wall of the vibration isolation element is directly in fixed connection with a satellite body. The vibration isolation elements can effectively solve the vibration problem of an SGCMG, and possess a decoupling characteristic so as to effectively and rapidly realize the parameter design of vibration isolation elements; in addition, the vibration isolation elements can greatly improve satellite attitude stability.

The invention relates to an eight-supporting-leg ultra-static vibration isolation platform with an orthogonal structure and a fault-tolerant control method, and belongs to the field of space station optical load active vibration isolation control. According to the method, the reliability design problem of the eight-supporting-leg ultra-static platform is preliminarily researched, the influence of coupling is structurally relieved through the designed orthogonal decoupling configuration, and design of a controller is facilitated. The fault condition of the actuator is studied, the fault mode is analyzed, and a reconstruction model is built. The researched fault-tolerant control method can improve the reliability of the vibration isolation platform when the actuator breaks down.

An antenna configuration for use in a magnetic resonance apparatus, which is designed as phase-controlled array and comprises at least two individual antennas which each comprise at least one conductor loop, one tuning network and one matching network, wherein the tuning network contains at least one tuning capacitance and the matching network contains at least one matching capacitance, and 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 invention relates to an engine mounting rubber mat assembly. The upper end and the lower end of the engine mounting rubber mat assembly are fixedly connected with an engine stand bar and a support respectively, an upper contact surface between the engine mounting rubber mat assembly and the engine stand bar and a lower contact surface between the engine mounting rubber mat assembly and the engine support are both horizontally arranged to enable the longitudinal axis of the engine mounting rubber mat assembly to be arranged in the vertical direction, vibration attenuation and decoupling in each direction of engine mounting can be guaranteed, and sulfidizing is not required.

The embodiment of the invention provides a multi-channel radio frequency coil device an NMR imaging system. The multi-channel radio frequency coil device comprises at least two radio frequency coils which are arranged adjacently and used for generating nuclear magnetic resonance MR signals and/or receiving the nuclear magnetic resonance MR signals; and a decoupling loop arranged between the two adjacent radio frequency coils and is used for adjusting the induction current of the at least two radio frequency coils. The decoupling loop is arranged between the two adjacent radio frequency coils,so that the imaging integrity is improved on the premise of ensuring the decoupling performance is achieved.

The invention provides a method and a device for controlling a permanent magnet synchronous motor. The method comprises the steps of acquiring a given stator current, a stator voltage at the previousmoment, a given stator voltage at the previous moment and a stator current at the previous moment of the permanent magnet synchronous motor; using a preset output voltage function of a current regulator of the permanent magnet synchronous motor; determining the current given stator voltage by combining the given stator current, the stator voltage at the previous moment, the given stator voltage atthe previous moment, the stator current at the previous moment and the motor parameters, the current regulator at least comprising a cross-coupling anti-saturation controller, and the output voltagefunction at least comprising an active damping term; and controlling the permanent magnet synchronous motor according to the current given stator voltage. By adding the cross-coupling anti-saturationcontroller and the active damping item, the speed of current tracking is increased, the delay of current tracking is reduced, and the stability and the dynamic performance of the permanent magnet synchronous motor are improved on the premise of ensuring the decoupling effect.

The invention relates to a structure for hoisting and clamping shaft type forgings. The structure comprises a plurality of connecting plates and clamping heads, which are symmetrically arranged front and back, wherein one ends of the connecting plates are mutually hinged through hollow pipes and round pins; the other ends of the connecting plates are respectively hinged to one ends of the clamping heads through the hollow pipes and the round pins; the clamping heads are mutually crosswise hinged through the hollow pipes and the round pins so as to enable the connecting plates and the clamping heads to form a link mechanism. The structure is compact in structure and convenient to mount, the link mechanism is formed through the mutually hinged connecting plates and clamping heads, and is symmetrically arranged front and back, the clamping and loosing of an object by the clamping heads can be realized through the operation of a handle, the positioning is accurate, the clamping is firm, and the disassembly and assembly are simple and convenient.

The invention relates to a method and system for achieving service cross-organization circulation based on a process engine, and belongs to the technical field of office automation. The method comprises the steps that a service form submitted by a current node user is received; judging whether a business process corresponding to the business form is a cross-organization process or not, and when the process is judged to be the cross-organization process, calling an organization structure management platform to obtain associated organization information of an organization to which the current node user belongs based on the business form, definition information of users and roles under different organizational structures and mapping relation information among the different organizational structures are configured in the organizational structure management platform; and displaying roles and user list information in the associated organization information, and transferring the business process to a next node user according to a selection instruction of the current node user. According to the method and the device, cross-organization circulation of the business process can be better realized.