SU1118965A1 - Device for programmed control of positioning - Google Patents

Abstract

1. DEVICE FOR POSITIONING SOFTWARE CONTROL, containing a position sensor, a clock generator, a program block connected to the inputs of the switch connected to the first and second outputs with counting inputs of the first and second pulse counters connected via the first and second decoders to The first and second inputs are JafaitHtfe t Hvtatagki e give the unit of comparison, associated with the output from the first input of the second switch, characterized in that, in order to improve the position accuracy In this case, a frequency divider, the first and second null-bodies, connected by outputs to the control inputs of the first and second pulse counters, respectively, and inputs to the first and second outputs of the position sensor connected by the third output to the second input of the second switch connected to the output the control inputs of the first null-organ and the block of the program set associated with the inputs of the outputs of the frequency divider connected by the input to the output of the clock pulse generator 2. POP.1 device, OTLI-t is characterized by The position sensor is designed as an infrared light emitter and a photo relay connected by the first, second, and third outputs to the corresponding outputs of the position sensor.

Description

The invention relates to automatic control, in particular, to devices intended for adjusting a position in space, and can be used in computer software control systems for transporting a control volume in a specific post. from one work position to another. A device is known for programmatically controlling the position of an object comprising a serially connected program master, a counter, a comparator unit, a drive and a field sensor, for example a rotating transformer, as well as a pulse generator, a frequency divider, a voltage driver, two phase-shifting units and two pulse drivers l. In this device, the engine of the movable object and the position sensor are mechanically connected. In the presence of a mechanical connection, both the radial displacements of the geometrical axes of the motor shaft and the position sensor, and their angular misalignment are inevitable. This introduces a significant error in the installation of the target position of the object and reduces the reliability of the device. The closest to the present invention is a device comprising a position sensor, a television system with a unit for filtering pulses of building and starting pulses, a comparison voltage unit and a comparator, as well as switching selectors setting the program, the outputs of which are connected. to the inputs of the meters connected to the outputs of the electrical evaluation system with a 64-position offset register. One of the outputs of the position sensor is connected to the counter, the other is connected to the positional offset register. The electrical evaluation system performs the function of decoder counter information. The output of the electrical evaluation system is connected to a computer in which the decrypted information from the meters is compared. The output of the computer is connected to the input of the movement control unit of the object, the output of which is connected to the transfer unit of the moving device. One of the outputs of the pulse generator is connected to the counter, and the other to the positional offset register. The image of the actual position of the object is converted into point information, which is then converted into digital form. In digital form, the device also receives information describing the position of the object. The computer compares the actual and the specified positioning parameter and calculates the parameters of the deviations between them. The control is the information characterizing the difference between the actual and the desired positions of the object 2. The limited resolution of the position sensor of the television system, due to the finite number of expansions into lines, limits the accuracy of the positioning of the object. When using a known device in adverse weather conditions (snow, rain, fog, etc.), the image quality deteriorates significantly and, therefore, inaccurate information comes to the processing units, which drastically reduces the accuracy of the device and its reliability. In addition, the device is complicated in construction. The purpose of the invention is to improve the positioning accuracy. The goal is achieved by the fact that the device for the program:: -; :: a lot of positioning control containing a position sensor, a clock generator, a dialing unit are programmed, connected by outputs to the inputs of the first switch connected to the first and second outputs with counting inputs of the first and the second pulse counters connected by the outputs via the first and second decoders respectively to the first and second inputs of the comparison unit connected by the output to the first input of the second switch are entered divides The frequency target, the first and second zero-bodies connected to the control inputs of the first and second pulse counters, respectively, and the inputs to the first and second outputs of the position sensor connected by the third output to the second input of the second switch connected by the output to the control inputs of the first zero organ and a block of the program set associated with the inputs to the outputs of a frequency divider connected by an input to the output of a clock generator. .. The position sensor is designed as an infrared light emitter and a photorelay connected by the first, second and third outputs to the corresponding outputs of the position sensor. The drawing shows a functional diagram of the device. The device contains 1 clock pulse generator, 2 frequency divider, program block 3, first switch 4, first 5 and second & pulse counters, first 7 and second 8 decoders, block 9

comparison, the second switch 10, the first 11 and the second 12 null-organs, as well as the position sensor 13, which includes the infrared light emitter 14 and the photo relay 15.

The proposed device for programmatically positioning an object in a particular embodiment is used for programmatically controlling the movement of the timber carriage counter 16, which moves along predetermined positions 17.,

The device works as follows.

When the device is turned on, the object being positioned (carriage 16) begins to move towards the specified positions (measuring platform 17), and the generator 1 also. This impulse is produced by a signal which arrives at frequency divider 2, where it is divided in such a way that n signals with frequency nf arrive at the input of block 3 of the program set (where n is an integer). The number and iacTOTa of signals is determined by the number of set positions for installation of the cart 16. If, on the measuring platform 17, there is one stack of timber, then to measure its volume, it is necessary to install the cart 16 strictly in the middle of this stack. To ensure this operation, it is enough to send two signals to the input of the setter 3 of the program, the signals with the frequency If and 2f. If there are three piles on the measuring platform 17, then to measure their volume, you need to install the cart 16 in three positions - in the middle of each pile. To ensure this operation, three signals with a frequency of if, 3f 6f are necessary. If on the measurement platform there are 17-p stacks, then three signals with a frequency of If, nf, 2nf are required. From block 3 of the program set, two or three signals of a certain frequency are sent to the switch, depending on the number of timber stacks. As soon as the carriage 16 moves to such an extent that the edge of the stack on the measuring platform 17 darkens the gap between the infrared light emitter 14 and the photoelectric sensor 15 of the carriage position sensor 13, the frequency signal from the switch 4 is fed to the counting input of the counter 6. At the same time, the connection between the null organ 12 and the counter is interrupted 6, which is reset. Counters 5 to. 6 are made on j K-triggers on the principle of shifting registers. When the cart reaches the opposite edge of the stack of timber placed on the measuring platform 17, a gap appears between

infrared light emitter 14 and photo relay 15. Photo relay 15 turns on and the switch 4 stops the signal If at frequency 6. Simultaneously, the counter input of counter 5 from switch 4 begins to give a signal with frequency 2rnf (where n is the number of piles on the measuring platform 17 ). However, the signal in counter 5 does not accumulate 0 s, since in this position the information supplied to this counter is zeroed by the authority 11. At the same time as the photo relay 15 is turned on, the switch 10 is given a signal containing information about the engine reverse and the carriage 16 begins to move to the opposite direction. As soon as the edge of the timber stack on the measuring paltform 17 enters the gap between the radiator

0 14 and the photo relay 15, the latter is disconnected, the interruption between the counter 5 and the zero-body 11. As a result, zeroing is removed from the counter b, and it begins to accumulate a 2 nf signal.

G,.

The counters are constantly deciphered by decoders 7 and 8. Signals from these decoders are 0 to block 9 comparisons. When the states of the counters 5 and 6 are equalized from the comparator unit, a signal is given through the switch in which the engine of the carriage 16 is turned off. In time

5, the trolley stop measures the middle section of the timber pile. When you turn on the sensor that controls the start of work (not shown), the connection is connected counter 5 - a zero-body

0 11 and counter 5 is zeroed. At the same time, a signal is sent to block 3 of the program set and from the latter through switch 4 to counter 5, a signal of frequency nf begins to be received instead of a signal of frequency 2nf. However in this

At the 5 position, the signal does not accumulate information, since it is constantly zeroing. When the sensor that controls the end of the work (not shown) is turned on, the signal from the output of the switch 10 turns on the motor of the trolley 16. At the same time, the connection between the counter 5 and the null organ 11 is disconnected and the latter begins to accumulate a signal with frequency nf. The counters 5 and 6 are again constantly deciphered by the decoding 7 and 8 and when the states of the counters 5 and 6 are equalized from the comparison block 9, a signal is sent to the switch, which turns on the engine 10. After

0 this cycle of operation of the device is repeated.

The proposed device has a theoretically unlimited resolution, determined by the number of triggers in the counters. With

five

1118965

Increasing the number of triggers for the time being, to test the number of the service provider perrareskachtsa device ability. In applying the proposed, therefore, the accuracy of the device also in the national economy

melt to the dock. In the device is used to measure the stacks of timber

The source of infrared light is used on railways and cars.

therefore, the accuracy of the positioning-G 5 mobile platforms is due to more

The weathering does not affect the weathering.

VIA, reducing visibility and, as a result, position increases its accuracy, its reliability increases dramatically.

Simplicity of management allows a considerable savings.

Claims (2)

1. DEVICE FOR PROGRAM CONTROL OF POSITIONING, comprising a position sensor, a clock pulse generator, a program set block connected to the outputs of a switch connected by the first and second outputs to the counting inputs of the first and second pulse counters, connected by the outputs through the first and second decoders to the first and second inputs of the comparison unit, connected by the output to the first input of the second switch, characterized in that, in order to improve positioning accuracy, Frequency amplifier, first and second null organs connected by outputs to control inputs respectively! the first and second pulse counters, and the inputs to the first and second outputs of the position sensor, connected by the third output to the second input of the second switch, connected by the output to the control inputs of the first zero-organ and the program set block, connected by the inputs to the outputs of the frequency divider connected by the input to clock output 2. Device pop. 1, characterized in that the position sensor is made in the form of an infrared light emitter and a photo relay, connected by the first, second and third g outputs to the corresponding outputs of the position sensor. sown I