Detecting apparatus of adjusting speed

Abstract

Abstract PURPOSE: To improve the detection accuracy of low adjusting speed in high speed limits, by comparing the period observing data of output pulse of speed sensor and making the output of adjusting speed zero on occasion of not showing the difference of peiord even when numbers of observed pulse are reached the value of preliminary determined upper limit. CONSTITUTION: The clock oscillator 1, counter 2 and ratch circuit 3 are provided as a means of period observation of every N pulse section of output pulse of speed sensor. Data of period observation of every N section of the output pulse of the speed sensor are compared through the comparison operating part 6 and if the difference is found, calculated result of adjusting speed at that point of time is outputted and then, if the difference is not found, comparison of data of period obsarvation is repeatedly carried out increasing observed pulse numbers N moreover. On occasion of finding no difference even when said numbers N are reached preliminary determined upper limit, signal making adjusting speed zero is outputted by the main control part 8. By such a constitution, detecting accuracy of low adjusting speed at a high speed limits can be improved. COPYRIGHT: (C)1981,JPO&Japio

Inventors

• 👤 Jun Kubo
• 👤 Minoru Honda

Bibliographic Details