Electrical pulse counters – pulse dividers – or shift registers: c – Applications – Position determining
Patent
1991-10-10
1993-05-11
Heyman, John S.
Electrical pulse counters, pulse dividers, or shift registers: c
Applications
Position determining
377 51, H03K 2140, G06M 302
Patent
active
052107760
ABSTRACT:
The present invention relates to a counter circuit for counting the rotated position of the motor and controlling absolute position of the same to control an absolute position of a robot system, which comprises, a RS-422 receiver for receiving encode signals from a motor driver, a 16-bit counter device for receiving rotated-number data of the motor supplied from the receiver and counting the data to output the counted value to a CPU via a bus line, a plurality of 4-bit counters for counting the signals when overflow or underflow is produced at the 16-bit counter portion, a first 8-bit latch circuit for receiving the counted values from the 4-bit counters and outputting the counted values to the CPU, and, a second 8-bit latch circuit for controlling the output state of the receiver on the basis of a control signal supplied through the bus line when a zero pulse control signal is inputted for searching an origin of the robot system thereby preventing erroneous counting operations due to a program and reducing the program porforming time.
REFERENCES:
patent: 3832640 (1974-08-01), Cederquist et al.
patent: 3922670 (1975-11-01), Shaw et al.
patent: 4881248 (1989-11-01), Korechika
patent: 4931792 (1990-06-01), Baginski
patent: 4951300 (1990-08-01), Koike
Kim Sung-Kwon
Oh Hak-Seo
Heyman John S.
Samsung Electronics Co,. Ltd.
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