Abstract:From the general concept of nanometrology and measurement technology and somereference article,this paper sgnthesises the researching situation of the field in and out our country anddiscusses the developing situation and prospect of nanometrology and measurement technology innanometer scale by introducing our researching results. The discusses problems are how to relizemeasurement technology in nanometer scale, to complete nanometer reference coordinate, to generatenanometer accuracy repetitive movement,the connection between the transducer and coordinate systemof nanometer,and the uncertain limitations for nanometer accuracy measurement technology.

Abstract:Silicon pressure transducers feature miniaturization and high sensitivity. The pressurerange for nimiature pressure transducers has been as low as 1 kPa by now. In the development of highsensitivity pressure transducer,the inprovement of diaphragm structure has been playing an importantrole. lntroduced in this paper is the beam-diaphragm (island)structure, first proposed by the authors in1989. Also introduced are two similar structures proposed by TUB and Honeywell in 1993 and 1992,respectively. 1 kPa pressure range has been achieved by all these three structure.

Abstract:This paper discusses the problems about measuring resolution in non-contractingmeasurement system which consists of camera,plcture card and computer. Some readons of influencingmeasurement resolution are analysed and suggestion of improving measurement resolution arepromoted.

Abstract:This paper is intended to introduce calculating the main technical parameters for randomvibration reference profile with analytic method. The calculating formula and examples for the spectrumparameters and acceleration total root mean square are given.

Abstract:Main problems about basic error ca1ibration for power factor meter with 400 Hz andsingle phase are analysed. The new phase meter with high precision and basic error of calibrating thepower factor meter are introduced and its calibrating results are discussed.

Abstract:This paper describes precision test of inductosyn and overall measuring angle system for1. 2 m infrared telescope and astrolabe. Then test scheme for 4. 3 m telescope are designed.

Abstract:According to experimental results, voltage divider measurement and analysingespecially narrow high voltage single impulse method, the disadvantage of distributing is that theinfluence of distributing capacitauce is neglected. After using compensating capacitance, voltage divideris improved. The project of improved measuring method is given from time field solution of improvedvoltage divider model.

Abstract:The instrument and controller which consists of some computer on slice often need oneor two channel temperature input signal, such as environment and water temperature. This paperintroduces digital interface circuit for the thermistor temperature transducers,with stability and againstinterference.

Abstract:This paper described the construction principle of the torsion pendulum,the method ofdetermining moment of inertia with this pendulum and the error analysis.

Abstract:The distortion analyzer or spectrum analyzer is used for measuring AM (amplitudemodulation)distortion in the traditional method. This paper introduces the new method of using AMlinearity for testing AM distortion.