摘要:
A numerical control device wherein a sinusoidal signal generated by a sine wave generation part is input by a control loop excitation part to a control loop of the control object, the input signal input to the control loop and the output signal from the control object are sampled by the data acquisition part periodically, and the sampling data is used by the frequency characteristic calculation part to calculate the frequency characteristic of the control loop to control the control object, wherein the frequency characteristic calculation part uses data obtained by inputting a sinusoidal signal obtained by shifting an initial phase of the sinusoidal signal by a phase shift part provided at a sine wave generation part by exactly a certain amount to the control loop a plurality of times to calculate the frequency characteristic of the control loop to thereby improve the measurement precision regardless of the sampling frequency.
摘要:
Provided is a motor control system of a numerical controller that can instruct a plurality of motors and display data on a display device by means of a single serial bus. An amplifier which controls the motor drives the motor based on a motor command received from the numerical controller via the serial bus. The display device display data on a screen based on display data received from the numerical controller via the serial bus.
摘要:
An arithmetic unit for correcting a detection output of a detector for a mechanical error of the detector in accordance with a predetermined input/output characteristic (straight line) is provided. When a digital output of the detector exceeds an upper limit value stored in a main memory, the digital output becomes a new upper limit value. From a virtual line which passes through the new upper limit value and which is parallel to the straight line, a new lower limit value is obtained. A corrected operation output is obtained in accordance with a new input/output characteristic of the detector based on the new upper limit value and the new lower limit value. Thus, the correction accuracy is improved.
摘要:
A drive control system for supplying a drive voltage to a DC servo motor. The drive control system includes a position detector for detecting a rotational position of the DC servo motor, and a controller which switches the drive mode of the DC servo motor from DC drive to PWM drive when a detected position value obtained by the position detector is within a predetermined amount of a value corresponding to a target stop position.
摘要:
An optical system is provided having an analog image memory, an analog refresh circuit, and analog converters. An optical image is projected on a charge transfer array, such as a CCD imaging array, generating analog image charge samples in the array. The analog image charge samples can be shifted in the array and can be processed with an analog to digital converter to generate digital samples. The digital samples can be processed with a digital processor, such as a stored program digital computer; can be processed with an analog processor, such as a stored program analog computer; and can be processed with an analog filter processor, such as a Fourier transform processor. The analog image signal samples can be refreshed to reduce signal degradation, such as with a bias refresh circuit and a scale factor refresh circuit. Adaptive refreshing can be implemented by storing a reference signal in the analog memory and refreshing the analog image signal samples in response to the reference signal.
摘要:
An improved data processor architecture is provided having integrated circuit (IC) memories. Provision is made for dynamic memories with a memory refresh arrangement. Memory refresh is provided in response to instruction execution, synchronized with computer control signals to minimize contention or conflicts with computer operations and to share control circuitry. An improved memory architecture is provided that is particularly suitable for dynamic memories and integrated circuit data processors.
摘要:
Memory technologies for storing filter samples include RAMs and CCDs. Adaptive memory capability and memory servo capability improve memory characteristics. In a RAM embodiment, a detector is used to detect a memory address condition and to control the memory and the memory address register in response thereto. In a CCD embodiment, a detector is used to detect a memory reference signal and to refresh the memory signals in response thereto. Improved memory refresh, memory performance, and memory capacity enhance system characteristics. Improved memory architecture provides advantages of increased speed, lower cost, and efficiency of implementation. Information stored in memory can be scanned out at a rate greater than the addressing rate associated with the memories. This permits higher speed operation with lower cost memories. Use of an output buffer, such as a FIFO, permits normalization of memory clock rates.
摘要:
A computer system having an improved memory architecture uses a variety of memory speed enhancement features that can be used in combination. For example, the memory is scanned out across memory blocks, unnecessary row addressing operations are detected and eliminated, and the memory is organized to reduce row addressing operations for combinations of instruction accesses interspersed by operand accesses. In a DRAM configuration, unnecessary CAS addressing cycles and RAS addressing cycles are detected and eliminated. A memory address detector circuit in the memory controller determines the nature of the memory cycle; chip select, RAS, or CAS; needed to access stored digital information and deletes unnecessary cycles.
摘要:
A filter display system is provided to improve display operations. Filtering of display information, such as with correlation filters, improves the image and enhances events of interest. High speed filters for filtering on the fly as the image is being refreshed provides improved capability for iteratively and adaptively enhancing an image. Parallel processing channels provide multiple filtering operations simultaneously for improved performance. Iteratively refreshing a display with filtered information as the filtered image is built up permits operator intervention for optimizing filtering operations.
摘要:
A personal computer (PC) and a programmable controller are used to automatically reposition the turn bars and compensation rollers used in a folder for a web printing press. By providing linear transducers for each of the turn bars and compensation rollers disposed at each level of the folder, analog information as to the actual position of each is provided to the programmable controller. The PC provides digital information to the programmable controller as to the desired position and an error signal is computed for controlling the operation of the drive motors so as to reduce the error signal to zero. When setting up the folder to run a new job, the turn bar settings and compensation roller positions are manually accomplished, but upon command, the settings for that job may be stored in the memory of the PC for use the next time that particular job is to be run.