3results about How to "No error accumulation" patented technology

The present application relates to a kind of welding methods of large-scale spliced pipe fittings, belong to welding technical field, it includes the following steps: step one: from the adaptive coaxial inner clamping between connecting device and pipe inner wall;Step two: from the welding mechanism of connecting device and installation component cooperation drive is close to the place to be welded;Step three: welding mechanism drives electrode free end and the start point of place to be welded alignment;Step four: welding unit carries out welding using electrode;Step five: welding mechanism moves to avoid the moving track of replacement mechanism;Step six: replacement mechanism pulls electrode and moves towards welding mechanism;Step seven: welding mechanism moves to make clamping area a and clamping area b be located on the same straight line, replacement mechanism drives electrode tail end to be located in clamping area a, clamping area a closes and clamps electrode, clamping area b opens and cancels the clamping of electrode, then, welding mechanism moves to avoid the moving track of replacement mechanism, replacement mechanism resets.

The invention provides a modular heliostat surface shape rapid assembling platform, the assembling platform is composed of a movable reference platform, a transmission branch chain and a fixed base, the movable reference platform is connected with the fixed base through the transmission branch chain, the movable reference platform is composed of a platform support, a mounting flat plate and a pneumatic positioning device, and the platform support is connected with the mounting flat plate through the transmission branch chain. The platform support is composed of an outer ring support, an inner ring support and a communicating support, the plane geometric center points of the inner ring support and the outer ring support coincide, the geometric center points are the center of the movable reference platform, the center line of the plane of the communicating support coincides with the center of the movable reference platform, and the included angle between the center line of the plane of the communicating support and the center line of the plane of the communicating support is 120 degrees. Mounting plates are arranged on the end face of the communicating support, and the mounting plates are distributed in an equilateral triangle shape. Compared with the prior art, the method does not need a complex process of measuring single planar sub-mirrors one by one and calculating a positioning reference, can carry out the flexible combination of sub-positioning platforms, is suitable for the surface shape assembly of various types of heliostats, improves the universality of assembly equipment, and effectively reduces the manufacturing, transportation and maintenance cost of the whole equipment. The method is not influenced by external conditions such as climate or illumination, has the characteristics of no error accumulation, and can realize high-precision motion control.

This disclosure provides a magnetic field positioning system. The magnetic field positioning system includes at least two magnetoelectric transmitting nodes, at least one magnetoelectric receiving node, and a position determination module. Each magnetoelectric transmitting node includes a signal generator, a voltage amplification circuit, and a first magnetoelectric device connected in sequence. Each magnetoelectric receiving node includes a second magnetoelectric device, a charge amplification circuit, and an amplitude detection circuit connected in sequence. The position determination module is used to determine the distance from each magnetoelectric transmitting node to the magnetoelectric receiving node, and to determine the position of the magnetoelectric receiving node based on the position of each magnetoelectric transmitting node and the distance from each magnetoelectric transmitting node to the magnetoelectric receiving node. This disclosure can effectively increase the maximum measurable distance of magnetic field positioning, effectively solve the problem of needing to deploy a large number of transmitting nodes in a limited space, and reduce positioning errors. It can be used on a large scale in various complex electromagnetic environment industrial scenarios.