摘要:
In a method and apparatus for measuring a driving amount of a motor, relative driving amounts and absolute driving amounts are sampled in each predetermined driving amount pulse train on the basis of an origin of a motor, the relative driving amounts, coefficient and constant of at least one linear approximate equation representing the relation between the relative driving amount and the absolute driving amount are obtained from the relative driving amounts and the absolute driving amounts sampled, and the coefficient and constant obtained are preliminarily stored in a non-volatile memory.Accordingly, the contents in the non-volatile memory are utilized at a starting time of a motor whereby the present position indication of the motor can be conducted without effecting an origin indication of the motor.
摘要:
A drilling restart control system is for restarting an NC drilling machine for a printed wiring board or the like. A drilling data block provides for a bore diameter, a drilling position, and detection of a complete block. A host computer reads data from a storage medium and the data processing is executed. A series of drilling instructions is stored in a memory with protection against power failure. When a restarting of the drilling operation is indicated, the machining operation is reserved until the data coincides with the contents stored in the memory with protection against power outage.
摘要:
A numerical control system for controlling the motion of a movable member wherein part program and other data flows throughout the system under control of a programmable digital processor. Selected devices present interrupt signals indicating data flow conditions according to an order of priority determined by external wiring; the highest priority being assigned to part program reading and the lowest priority being assigned to the scanning of certain hard contacts such as control panel switches. Interface logic between input and output devices and the processor is disclosed.
摘要:
A gear pitch error correcting system for a numerical control apparatus used for a machine tool including at least one pair of gears provided in a transmission line through which the rotating force of a servomotor is transmitted to a driven member. Gear pitch error correction values for the respective gears, which each correspond to a predetermined gear angle and collectively cover one gear rotation, are stored in a nonvolatile memory. A pitch error computing means (E) refers to a current position register (D), reads out pitch error correction data (14b) corresponding to the current position from the nonvolatile memory, and adds up the data to obtain a superimposed pitch error correction value. The superimposed pitch error correction value and an interpolation pulse from an interpolating means (B) are added together by an adder (C), to obtain a pitch error-corrected output pulse, which is then supplied to an axis control circuit (18). Accordingly, even with a relatively small number of gear pitch error correction values for the individual gears, a gear pitch error correction can be precisely executed in proportion to the superimposing of the gear pitch error correction values.
摘要:
Disclosed is a method of controlling a robot, for restarting the robot by resupplying an electric power in the event of a power failure. When a power failure detection circuit detects that a voltage has dropped or has been cut off, the circuit notifies an operating method (OS) of this (S1) and the OS writes a power failure flag to a non-volatile memory and stops a task being performed (S2). The data of the task being performed is saved in the non-volatile memory. After the electric power has been resupplied (S10), the OS executes a power failure processing for itself, with reference to the power failure flag (S11), initializes hardware (S12), executes a power failure processing routine for each task (S13), and restarts the operation of the robot from the position at which the robot was stopped when the power failure occurred (S14).
摘要:
To improve the reliability of a control in a control system for devices included in an aircraft, such as engines. An engine control system 10 for controlling engines 11 of an aircraft includes a FADEC 30 including a calculation processing unit 33 for performing control calculation, and a first memory 321 for storing abnormality detection information that indicates that the calculation processing unit 33 detects an abnormality occurred in a sensor 20 and an actuator 21 used for a control. The abnormality detection information is not erased but still stored in the first memory 321 since the first memory 321 is not cleared even if the engine 11 is stopped. As a result, referring to the abnormality detection information makes it possible to avoid using a device having a low reliability, in which an abnormality is detected, for the control.
摘要:
A machining end detecting device detects whether each hole or the like has completely been drilled to its bottom or not, and the latest drilling information is stored in a nonvolatile memory. In the nonvolatile memory are also stored modal data sequence numbers assigned to drilling start position determining blocks and the latest information on a drilling restart position. Upon inputting a drilling restart command from key input means such as a cycle start button, a restart block indexing device indexes, from a numerical control machining program, a restart block necessary for resuming drilling of an unfinished hole or the like on the basis of the sequence numbers and the machining end detection information stored in the nonvolatile memory. A restart positioning device positions a drilling machine at the drilling start position stored in the nonvolatile memory, and a control device causes the drilling machine to restart with the indexed restart block from the specified position.
摘要:
To improve the reliability of a control in a control system for devices included in an aircraft, such as engines. An engine control system 10 for controlling engines 11 of an aircraft includes a FADEC 30 including a calculation processing unit 33 for performing control calculation, and a first memory 321 for storing abnormality detection information that indicates that the calculation processing unit 33 detects an abnormality occurred in a sensor 20 and an actuator 21 used for a control. The abnormality detection information is not erased but still stored in the first memory 321 since the first memory 321 is not cleared even if the engine 11 is stopped. As a result, referring to the abnormality detection information makes it possible to avoid using a device having a low reliability, in which an abnormality is detected, for the control.