Establishment of cylinder speed and position control system by digital computer of electric hydraulic servo system
专利汇可以提供Establishment of cylinder speed and position control system by digital computer of electric hydraulic servo system专利检索，专利查询，专利分析的服务。并且PURPOSE:To control an electric hydraulic servo system precisely and accurately by calculating the valve opening of a servo valve by digital operation based upon a program of a microcomputer and controlling the speed and position of a cylinder. CONSTITUTION:A personal computer included in a 16-bit machine group is provided with a D/A converter and an A/D converter and CP/M86 is used as computer language. The center value 7ffffh of 0-0fffh is impressed to the D/A converter as a neutral position signal DEc of a servo valve. When the speed value of the cylinder is defined as DEr=3e8h, the applied variable to the D/A converter is DEd=DEc+DEr=83e7h. The value DEd is converted into an analog value and impressed to the servo valve and the cylinder is driven at that speed. If an output from a displacement detector becomes equal to a previously stored objective value signal DEp, DEd=7ffffh is outputted and the value is turned to the neutral position to stop the cylinder.，下面是Establishment of cylinder speed and position control system by digital computer of electric hydraulic servo system专利的具体信息内容。
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