The application of Loke velocity measuring device in speed controlling of flattening roll of aluminum cold rolling mill was described in the paper.

Study on new method of laser range finding and light velocity measurement

An improvement of light path adjusting method in light velocity measurement

Upper computer software design of whiteness measurement system;

Realization of depth measurement and velocity measurement with high precision.;

Control and velocity measurement of multi-stage reconnection gun;

The principles and experimental methods of both velocity measurements including the electromagnetic induction,the rotary 2-disc,the Laser-2-Focus Velocimeter,the Laser-Doppler Velocimeter(LDV),the Particle Image Velocimeter(PIV),the impact force measurement and the jet structure measurements including the Scanning-X-Ray Densitometry,the flow separation technique were summarized.

Simplified computational method of high-accuracy speed measurement based on low resolution encoder;

Study on digital speed measurement methods for servo control system of swivel table;

This system band together tramcar speed measurement, over-speed alarm and the conservation, display and management of record data.