JPS62120513A - Control system for multiplication of manual pulse - Google Patents

Abstract

PURPOSE:To easily set a manual pulse at an optional and desired value of multiplication by deleting the multiplied puses within a fixed period of time and also easily setting the multiplication value by means of the parameter of a microprocessor, etc. CONSTITUTION:Both A- and B-phase pulses of a manual pulse generator 1 are supplied to a waveform shaping circuit 3 via a filter 2. Then a forward or reverse pulse 10 or 11 obtained through discrimination of direction is sent to an up-down counter 12. The value of the counter 12 is changed with rotation of the generator 1.A microprocessor 14 calculates an equation based on the output of the counter 12 to obtain the N' value, where the preceding count value obtained before change of the value of the counter 12 is defined as Nn-1 together with the present count value defined as Nn, the difference defined as N between both count values Nn-1 and Nn, and the multiplication value set previously to correspond to the shift amount of a motor and defined as C respectively. The value N' is set to a distribution counter 19. thus a forward or reverse multiplied pulse 17 or 18 is deleted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a control system for multiplying manual pulses used in positioning devices and the like.

[Prior Art] Conventionally, in applications such as NC machine tools, there have been many positioning devices that use a manual pulse generator to send one pulse. Conventional control methods of this type include:
For example, the one shown in FIG. 3 is known. Here, 1 is a manual pulse generator, 2 is a filter, 3 is a waveform shaping circuit, 4 is a multiplier circuit, 5 is a multiplexer, 6 is a signal switching circuit, and 7 is a deviation counter. In the positioning device, the counter output is converted into an analog value by a D/A converter, and the motor is rotationally driven according to the value.

Furthermore, the rotational speed of this motor is detected by a rotary encoder and supplied to the deviation counter 7, and servo control is performed so that the deviation counter value becomes zero, and when the value is zero, the motor is stopped, and the manual pulse The motor is rotated in response to manual pulse input from generator l.

The A-phase and B-phase pulses from the manual pulse generator 1 are
Each of the pulses is supplied to a waveform shaping circuit 3 via a filter 2, where the waveform is shaped and the direction is determined to obtain a forward rotation pulse lO and a reverse rotation pulse 11. These pulses lO and 1
Either input it directly to the deviation counter 7 via the multiplexer 5 without multiplying it by 1, or input it directly to the deviation counter 7 through the multiplexer 5.
is converted into a constant multiplied pulse, and the multiplied pulse is switched by the multiplexer 5 and input to the deviation carantuff.

However, in such a control method, since the multiplier value depends on the multiplier circuit 4, the selection of the multiplier value is limited, and there is little control flexibility. It has the disadvantage that it cannot be constructed economically because it uses many parts.

[Problems to be Solved by the Invention] Therefore, an object of the present invention is to solve the above-mentioned problems and provide a manual pulse multiplication control system that easily enables manual pulse multiplication. ζ In particular.

[Means for Solving the Problems] In order to achieve such an object, the present invention provides a manual pulse multiplication control method that multiplies the manual pulse taken out from a manual pulse generator. means for setting a multiplication value; means for determining the difference between the current value and the previous value of the number of manual pulses; means for multiplying the set multiplication value and the difference between the number of pulses; and generating a pulse signal. and means for permitting the delivery of pulse signals in a number corresponding to the result of the multiplication.

[Function] - The present invention was made by focusing on controlling the difference between the previous value and the current value of the manual pulse, thereby making the pulse delivery time constant and increasing the multiplication value within that time. By multiplying the difference between the values and the pulses and outputting the resulting value, it is possible to easily multiply the manual pulse without any restrictions on setting the multiplication value.

That is, according to the present invention, the multiplication pulse is delivered within a certain period of time, and the multiplication value can be easily set using microprocessor parameters, digital switches, etc., so there is no need for a special multiplication circuit. Moreover, there is no limit to the multiplication value of the manual pulse, and the manual pulse can be easily multiplied to any desired multiplication value.

[Example] The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention. Here, the same parts as in FIG. 2 are given the same reference numerals.

A-phase and B-phase pulses from a manual pulse generator 1 are input to a waveform shaping circuit 3 through a filter 2, and a forward rotation pulse 10 or a reverse rotation pulse 11 obtained by direction determination is input to an up/down counter 12. This up/down counter 1
The count value of 2 can be read by the microprocessor 14 via the bus 13. A keyboard 15 supplies various inputs to the microprocessor 14.

Reference numeral 16 denotes a frequency division counter that includes a built-in pulse oscillator that generates a clock pulse of a constant frequency, and divides the frequency of the clock pulse at a frequency division ratio set by the microprocessor 14. Even if the frequency of the output pulse from this counter 16 changes, the frequency division ratio in this frequency division counter 16 is
The pulse dispensing time shall be determined to be constant. The purpose of discharging pulses within a certain period of time is to set a predetermined short period of time from manual pulse input to the generation of multiplied pulses, so that the operator can reduce the operation time delay during that time. This is to ensure that the pulse is delivered twice as much so that it is not felt as much.

The frequency dividing counter 16 selectively generates the normal rotation side multiplication pulse 17 and the reverse rotation side multiplication pulse 18 within the predetermined time as described above, depending on the forward rotation pulse 10 and the reverse rotation pulse 11. A distribution counter 19 subtracts a preset distribution count value every time an output pulse from the OR gate 20 occurs, and generates an interrupt pulse 21 when the count value becomes zero. The interrupt pulse 21 is supplied to the clear terminal of the frequency division counter 16, and when the interrupt pulse 21 is generated, the multiplied output from the frequency division counter 16 is stopped. The above multiplication pulses 17 and 18 are supplied to the OR gate 20, and the fact that either multiplication pulse 17 or 18 has occurred is transmitted to the distribution counter 19.
The number of pulses multiplied by that number is counted at .

A desired multiplication value for the output of the up/down counter 12 and a frequency division ratio of the frequency division counter 16 are input into the microprocessor 14 using the ten keys on the keyboard 15, digital switches, or the like. In this state, the microprocessor 4 specifies in advance the distribution count value in the distribution counter 19 according to the set desired multiplier according to the output of the up/down counter 12, and then specifies the distribution count value in the division counter 16. On the other hand, the clock pulse oscillator is activated, the frequency of the clock pulse is divided by a frequency division ratio set for a predetermined pulse payout time, and a counter output is taken out. Here, the microprocessor 14 calculates the desired multiplied pulse number in the following manner according to the multiplied value inputted from the keyboard 15, and sets the multiplied pulse number in the distribution counter 19.

That is, if the manual pulse generator 1 rotates, the value of the up/down counter 12 changes. The previous count value before that change is N1-1, and the current count value is N
η, and C is a multiplication value preset to make the difference correspond to the working amount of the N1 motor. Based on the output of the up-down counter 12, the microprocessor 14 calculates N' = CX (NTl-N controller). =CXN calculation,
The N' value thus obtained is set in the distribution counter 19. As a result, the deviation counter 7 receives a double pulse, that is, a forward rotation double pulse 17 or a reverse rotation double pulse 1.
8 is paid out.

Here, when the count value of the distribution counter 19 becomes 0,
An interrupt signal 21 is generated and interrupts the sentence collection counter 16 to stop its counting.

The above operation is repeated during manual pulse operation, that is, every time a pulse is output from the up/down counter 12.

As described above, in the present invention, the pulse dispensing time is a fixed time, and within the fixed dispensing time, the forward rotation or reverse rotation multiplied pulse 1 is multiplied by any desired multiplier.
Pay out 7 or 18. In the present invention, the multiplier value can be easily read by using a parameter or a digital switch in the microprocessor 14, for example, without requiring a special multiplier circuit as in the prior art.
Furthermore, since there is no limit to the multiplier value, there is flexibility in manual pulse multiplier control.

[Effects of the Invention] As is clear from the above, according to the present invention, the multiplication pulse can be delivered within a certain period of time, and the multiplication value can be easily set using microprocessor parameters, digital switches, etc. , no special multiplier circuit is required, and there is no limit to the manual pulse multiplier value.
Manual pulses can be easily multiplied by any desired number.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention; FIG. 2 is a flowchart showing an example of the control procedure, FIG. 3 is a block diagram showing a conventional example. 1...Manual pulse generator, 2...filter, 3-...Waveform shaping circuit, 4... multiplication circuit, 5...Multiplexer, 6...signal switching circuit, 7...deviation counter, 10...Forward rotation pulse, 11... Reverse pulse, 12...up/down counter, 13... bus, 14... microprocessor, 15...Keyboard, 16... Frequency division counter, 17...Forward rotation side double pulse, 18...Reverse side double pulse, 19--distribution counter, 20...or gate, 21--Interrupt signal.

Claims (1)

[Scope of Claims] 1) A manual pulse multiplication control method that multiplies manual pulses taken out from a manual pulse generator, comprising means for setting a manual pulse multiplication value, and a previous value of the number of manual pulses. means for calculating the difference between the current value and the current value; means for multiplying a set multiplication value by the value of the difference between the number of pulses; means for generating a pulse signal; 1. A manual pulse multiplier control system, comprising means for permitting output of a pulse signal. 2) In the manual pulse multiplication control method according to claim 1, the pulse signal generating means includes means for generating a clock pulse at a constant frequency, dividing the frequency of the clock pulse, and calculating the result of the multiplication. 1. A manual pulse multiplier control system comprising: a frequency dividing means that is determined to output a number of frequency-divided pulses within a predetermined time period.