Electricity: motive power systems – Positional servo systems – Multiple mode systems
Patent
1984-11-27
1986-03-18
Shoop, Jr., William M.
Electricity: motive power systems
Positional servo systems
Multiple mode systems
318603, 364190, G05B 1118
Patent
active
045771413
ABSTRACT:
In order to appropriately position a specimen within a view finder of a microscope, the stage supporting the specimen must be quickly and smoothly moved in all directions of two dimensions X and Y. According to the present invention, this can be accomplished by dividing a tilt angle of an operation lever of a joy stick into three regions, an insensitive band, a low velocity region and a high velocity region. For each of latter two regions, a relevant signal is produced by the joy stick and transferred to a microcomputer which controls stage driving motors by sawtooth pulse voltages. The velocities of X- and Y-stages are generally setted in the microcomputer so as to be high for the high speed region and low for the low speed regions, and movements in X- and Y-directions alternate by a short time interval, thus quick and smooth movements of stages being enabled.
Hashimoto Noriyoshi
Ishikawa Aiichi
Kudo Koichi
Saiki Kazuaki
Yoshikawa Kuniyuki
Keane Patrick C.
Nippon Kogaku K.K.
Shoop Jr. William M.
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