SU451059A1 - System of two-coordinate program control with program correction - Google Patents

Description

one

The invention relates to the field of automation and computer technology and, in particular, to software systems for controlling machine tools with recording information on magnetic tape.

Known two-coordinate program control systems with program correction are known; they contain a technological information reading unit, a reference signal reading unit and serially connected control information reading unit, a deviation detector, a drive control unit, a drive, a feedback sensor connected to the reference unit. sensor, and a correction input unit connected to the deviation detector.

The purpose of the invention is to reduce the complexity of the preparation of the program.

This is achieved by introducing a correction value regulator, a reference signal generator, a comparator unit, a feedback unit, a two-channel scaling unit and a geometric addition unit connected to the comparator unit, and for each coordinate of the correction character switch units, connected to the technological information reading block, the drive control blocks for each coordinate

through a series-connected two-channel scaling unit, correction character switch blocks, and a correction value controller are connected to the correction input units of another coordinate.

The drawing shows a block diagram of the system.

The system contains blocks 1, 2, 3 of reading signals from a magnetic tape, respectively.

for coordinates x, control information and reference signal, deviation detectors 4, 5, drive control units 6, 7, drives 8, 9, feedback sensors 10, 11, correction input blocks 12, 13, two-channel

scaling unit 14, blocks 15, 16 of switching correction signs, correction amount controller 17, geometric addition unit 18, comparison unit 19, reference signal adjuster 20, feedback unit 21 and

a process information reading unit 22.

The signal from the magnetic tape enters the readout blocks 1, 2 and 3, the output signals of which are fed to the deflection detectors 4 and 5, respectively, and the reference signal through the feedback sensors 10 and II and the correction input blocks 12 and 13 to the second inputs of the detectors 4 and 5 deviations. If the control and reference signals coincide, i.e.

no program movement, the signal from the outputs of the deflection detectors is zero. In this case, there are also no signals from the outputs of the control units 6 and 7, and the drives do not move.

When a phase shift appears in any of the coordinates with respect to the reference signal at the output of the deviation detector of the corresponding coordinate, a signal proportional to this phase shift appears, and the control unit of the corresponding coordinate begins to move the drive connected to the sensor in such a direction so that the control and reference signals at the inputs of the deviation detector are equal.

When there are displacements in coordinates, signals from control units 6 and 7 also go to the inputs of a two-channel mass-spreading unit 14, from whose outputs they come to the inputs of geometric addition unit 18, which sends a signal to comparison unit 19, where it is compared with the reference signal setpoint 20. The deviation signal from the output of the comparison unit 19 through the feedback unit 21 sets the output value of the two-channel scaling unit 14 to be equal to the reference signal. The magnitude of the reference signal is chosen such as to provide the maximum amount of correction.

From the outputs of the two-channel mass stabilization unit 14, the signals arrive through the correction sign switching units 15 and 16, the manual controller 17 correction values to the correction input units 12 and 13, and the signal from one coordinate goes to the correction input unit of the other coordinate.

Subject invention

The system of two-coordinate software control with program correction, containing a technological information reading unit, a reference signal reading unit and serially connected along each coordinate control information reading unit, a deflection detector, a drive control unit, a drive, a reverse sensor

connection, connected to the reference signal reading unit, and the correction input unit, connected to the deviation detector, characterized in that, in order to reduce the complexity of the program preparation, a correction value regulator, connected in series to the reference signal adjuster, comparison unit, are introduced into the system, a feedback unit, a two-channel mass stabilization unit and a geometric addition unit connected to the comparison unit, and for each coordinate the correction character switch units connected to the technology reading unit information, with drive control units for each coordinate

through a series-connected two-channel scaling unit, correction character switch blocks, and a correction value controller are connected to the correction input units of another coordinate.

red