The paper explained the hardware and software structure of the system, as well as the operational principal. Resolved the problem of how to connect an absolute coder with standard InterBus interface to the system, accomplished automatic measurement and control of ascending height of the brake, so provide the scientific basis to water dispatch.
The theory, method and application of spatial autocorrelation analysis of plant population genetic variation are reviewed, including method of analysis with the genotype as nominal data and allele frequency as interval data.
The controller in this paper can be linked with two different encoder types: absolute rotary encoder (ten-line and eight-bit) and incremental rotary encoder (360 rpm).
Then, the author designs manipulator's pneumatic driving system, the Control system adopts SIMENSE S7-200 PLC as the control core,and replaces the absolute encoder by the incremental encoder to save cost. The research institutes two control schemes of PLC according to the manipulator workflow. The kinematics equation of manipulator is established by D-H method for the relation between the parts and position of manipulator.
Studies of error propagation in geodetic networks of an absolute type have already been carried through by several authors using various mathematical techniques.
For the very large workpiece, the use of an absolute type linear gage is recommended, since the master settings then need to be done just once.
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In the case of bulk workpieces an absolute type that eliminates the necessity of setting a master workpiece will be useful.
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It is proved in this paper that is an isometric isomorphism, where Xp is the nonabsolute Cesaro sequence space. On this basis the duals(continuous dual, α-dual, γ-dual) of Xp are determined.
With the development of space science, plasma physics and sho- rt wavelength laser study in recent years, there is a great progress on soft X-ray and Vacuum Ultraviolet spectral radiation metrology. This paper discusses the operating principle, the structure and the performance of VUV rare gas ionization chamber standard detector developed in this Lab, describes the evaluating equipment of the de- tector performance which is based on McPherson 247 grazing incide- nce VUV monochromator, and finally presents ...
This paper introduces an absolute capacitance diaphragm gauge which is made using magnetron sputtering, and the measurement circuits attached to it. The measurement range of this gauge is from 1.3Pa to 105Pa (1×10(-2) ~760 Torr) which covers five stages. The gauge and the capacitance signal detection circuits are placed inside one metal shell to avoid disturbance from the outside. The temperature fluctuation inside the thermostat is less than±0.1℃, thus the influence of temperature is effectively reduced. T...