JPS59213297A - Controller for stepping motor - Google Patents

Abstract

PURPOSE:To enable to input a step signal during the operation of a stepping motor by instructing the addition and subtraction of a step counter with direction signal for instructing the moving direction of a magnetic head, counting a step signal and driving until the data of a position counter coincide. CONSTITUTION:Reversible counters 11, 12 and FF13 form a step counter 14. Counters 11, 12 input a direction signal DIR at U/D terminal, and a drive select signal DS at a G terminal. The signal DIR instructs the moving direction of a magnetic head corresponding to the radial direction of a disk, which is set so that an addition count is executed at L and subtraction count is executed at H. A step signal STP is inputted to a CK terminal of the counter 11, and a carry signal of a counter 14 is inputted to the CK terminal of the counter 12. The present position of the magnetic head is counted by a positon counter 17, a microprocessor 15 compares the counted values of the counters 14, 17, and the motor 16 is driven until they coincide. Accordingly, the signal STP is arbitrarily inputted to follow up the high speed operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention is inspired by a step-moking control device used, for example, in a floppy disk drive device.

[Technical background of the invention and its problems]

Conventionally, as a stepping motor control device, ], first
What is shown in FIG. 2 and FIG. 2 is known.

) - That is, the one shown in Figure 1 is I10 boat 7,,CP
U (central processing unit 21)2 and ROiVI (1)-
If there is an input of the step signal STP to the IJ- (terminal of the I10 port l, a signal is input to the IR, C terminals of the CPU 2). CI) U2 is informed of this.

As a result, CPU 2 starts an interrupt and outputs the f signal S.
Continue interrupting until all TP is captured. Then, when all the steering signals STP have been taken in, C)) U2 starts driving control of the steering and ping motor 4 for 1η1.

- Mano ζ What is shown in Figure 2 is the CPU s P J, 9
Sura to J child, njE1 STP is input power J to CP
U 5 receives the 5TPO input of the swj-tsubu Shinkyu and turns it into a stepping morph 4't! , :, 1a.

However, in the case shown in Fig.
``l) In the middle of human power, CPU 2 is
-7 input processing is in progress/C cannot perform any other processing, input of YotaStesono signal 5TI) is completed,
When control of the U 2 cast chipping motor started, there were problems such as the inability of the human power of the Sudeno 0111 STP.

In the case shown in Ushidane 1 and 2, one step signal 4 S
Movement of J truck against TP human power 6-? ■While Tsume, Tora, and Ri are moving, there is a small space '1ii'>,: S
TP's intake) could not be performed, so [V stone A'A]
In response to the input of a human-like Stesono signal, there was a shortcoming that the movement was slow to follow.

[Za] - Koko Hitano]

this! 13 Ming was designed to eliminate these drawbacks.
It is a t thing, and the stenobing mork is stenon 0 movement chi'l
At the same time, the human power of the Stesono signal was created, and the continuous Kv was achieved at a very heavy speed.
It is an object of the present invention to provide a stepping motor control device that can follow the optical component of an input Stesono signal.

[Summary of the invention]

In this invention, when the direction of the moving force of the magnetic head relative to the disk is specified, the processing of the step, counter, and the count are specified, and both step counters drive the stepping morph that controls the movement of the magnetic head. On the other hand, the current position of the rad is counted by a position counter, and the stepping morph is driven when the value of the position counter becomes equal to the data of the step counter = η'. It performs control.

i fcIn this invention, the step counter is
(It was made so that it could be memorized and reported to other people.)

[Embodiments of the invention]

An embodiment of Ito's invention will be described with reference to the drawings.

In the 31st item), 11.12 is a reversible counter, 13(
These are step counter 14.
is formed. 1iiJ 100'' Reverse Counter 11.12
j manually inputs the direction signal DIR to its TJ/D terminal,
Drive select) (M number 1) S is manually input to the C terminal. The direction signal DIR indicates the direction of the moving force of the magnetic field (not shown) with respect to the radial direction of the disk. For example, a low level indicates the inner J-i1 direction, and a high level indicates the outer circumferential direction. J'HIJ<1. ing. When the direction signal DIR is at a low level, the reversible counters 11 and 12 are set to perform an addition count, and when the direction signal DIR is at a high level, the reversible counters 11 and 12 are set to perform a zero count. F=f Input STP to the CK terminal of the reversible counter 11, and input the C of the reversible counter 12.
Kgi,', the carry signal from the RC terminal of the child K6J inverse counter 11 is manually input. The reversible counters 11 and 12 fully count and output the step signal ss'rp with the outputs from the QA to QD terminals set to high level.
When is input, all outputs of the QD terminals are set to low level and the QD terminal output is output. Said Nori, Zoronozo 13 is n'! K'l ”J Ren Kaunk 12 RC Interchange
;5: Carry from child f1+i is input. No, put 16 stepping morphs in 5, do Eb solver 1? 1ii1 Busy, 1 circuit consists of 4 #7 Microgross, 175J, Magnetic-57 card's current position is counted fr','no-no-counter. The QA of the reversible counter is connected to the terminals PI 11 to R3 of the terminal 1, I->Il; .

Input the QD Kinoko output, and connect the j)14 to PI7 terminals to the previous jL four-ka-eight 12 QA + QB + QC
+Q11IX+, i2j-1j', and input, input the Q terminal output of the above-mentioned Nori, Shinr+7, and 13 to the 1 and 18 terminals, and read the count value of the step counter 14 in parallel. ing. - Also, the Mfl microprocessor 15 drives the step and ping motor J6 with the output from the P2□ to ■]2□ terminals, and also supplies the magnetic field to the position 16' counter 17 via the P2□ terminal. The current position is counted, and the count value of the step counter 14 is No. 1? i? The count value of the counter 17 is compared, and the stepping motor 16 is driven one step at a time until the count value of the position counter 17 matches the count value of the step counter 14.

The microprocessor 15 clears the reversible counter 11.12 of 111J to zero using the output from the P26 terminal, and also resets the counter 7 of 13 to 1.

In such a configuration, the step signal STP is manually operated (
r, one step counter 14 counts i. Whether the step counter 14 performs an addition count or a subtraction count is determined by the direction signal D1 instructing the moving direction of the magnetic head.On the other hand, the microprocessor 15-5 is Perform step processing.That is, read the count value of the step counter 14, and calculate the count 11Ij of the step counter 14.
and b) Compare '11 and the count value of 7 counter 17 [
7. To the magnetic field in the same place as the slur knob data, the C position []
v Check whether the Then, the stepping/ping motor 16 is controlled to stop or reverse one step at a time until the count values of both counters 14 and 17 match, and the magnetic head is moved one track at a time, and the position counter 17
Add or subtract one by one. When the count values of both counters 14 and 17 match, it is determined that the magnetic head has moved to the step and f data positions, and the step processing of the stepping motor 16 is terminated.

In this way, once the input of the step and f signal STP is
The counter 14 counts, and the microprocessor 15 reads the count value of the step counter J4, so even while the microprocessor 15 is driving the stepping motor 16, the step counter 14 Signal STP can be captured. In addition, the step processing 'F STP is so fast that even if it is done manually, the microprocessor 15 cannot handle the stepping/ping motor 16.
Drive! 11] without any trouble. I cut it out,
The count value of the tenop counter J4 - If the count value of the position counter 17 reaches that count value even for one arm, change the position of the 71-゛ Ill L to magnetic by changing the count value of the step counter 14. can be done continuously.

Next, another embodiment of the present invention will be described with reference to FIG. Incidentally, the same parts as those in the above embodiment are designated with the number 1TjJ-KENIN], and detailed explanation thereof will be omitted.

In FIG. 5, the step counter 14 is formed of three reversible counters 11, 12, 18, and the flip-flop is performed using the 8-1, 1)-signal from the RC terminal of the reversible counter 18 at the final stage. Set 19.

Shite 4 remembers that the status counter 14 flowed during the pretend 7, shift I call, and zo 19. And flipflop! Q of 7 jl'R1j J
'Output t microprocessor 15 1) 28 si i:a
``'I'': We are both saying 'I'.

By providing a three-stage reversible counter in this way, the amount counted by the step counter 14 can be increased.Moreover, when the step counter 7, i overflows, it is recorded in the flip-flop 19 and sent to the microprocessor 15. Therefore, 1zi- and step counter 14 can be
Take countermeasures against the enemy - Panoro - C.

It goes without saying that this embodiment also provides the same effects as those of the previous embodiment.

〔Effect of the invention〕

As described in detail above, this invention allows it to be achieved.

It is possible to provide a steering motor control device that can input the scale/f signal while step-operating the binder Tanabata, and can sufficiently follow the human power of the continuous speed signal at high speed. .

[Brief explanation of the drawing]

1 and 2 are professional diagrams showing a conventional example; FIGS. 3 and 3 are block diagrams showing one embodiment of the present invention; The figure is a diagram showing another embodiment of the invention. 14. Steno counter, 15.. Microprocessor, 16.. Stepping motor, 17.. Position counter. 1-1 Attorney Takeshi Suzue
Hiko 1st figure 2nd figure

Claims (2)

[Claims] (1) A step counter that adds and subtracts step and step signals for driving a stepping motor that controls the movement of the magnetic head according to a direction signal that instructs the direction of movement of the magnetic head relative to the disk; To the above magnetism. The position counter counts the current position of the step, and the data of the step counter is compared with the point of the position counter, and if the data of the position counter matches the data of the step counter, the step, L! A stepping motor control device characterized by comprising a control circuit for driving a stepping motor. (2) Insert your finger 7 in the direction of movement of the magnetic field towards the disk.
The step that drives the stepping motor that controls the movement of the magnetic spatula (・ゝ) according to the direction signal to
Stezzo count to add and subtract signals, -, E 1i [: I'Jj '<(\7 J, TI, position force/sonta to count right position, J1
211
ii)>: Compare with the data of ii't counter, place 1
A control circuit that operates the above-mentioned step and ping motor by 1 when the value of the counter matches the data of the step counter, and a suit flow of the step 0 counter.
Also, it is equipped with storage means! Y♀Sukenobi:/Gumota 11te 1j
control device.