摘要:
A system and method for generating master and slave reference signals is disclosed, wherein at least one axis of the plurality of axes is a master section and at least one axis of the plurality of axes is a slave section, said slave section being a slave of said master section. The system and method generates a first reference signal and a second reference signal, wherein the second reference signal lags the first reference signal by a first delay period, and the processor provides the first reference signal to the slave section and the second reference signal to the master section. As a result, the slave section can lead the master section.
摘要:
In a master unit, clock signals from a clock are counted by a counter, and clock data is generated. This clock data is outputted to a slave unit by a driver, and stored in clock data storage memory. The slave unit stores clock data received by a receiver in the clock data storage memory. A processor for a program controller of the master and slave units starts up, and executes the synchronized operation of an operating program of axes that are synchronized on the basis of clock data stored in the clock data storage memory. It is also possible to commence operation of an axis under other conditions without relying on clock data. If override is applied to clock data, override will apply only to an axis that is synchronized and operated in accordance with clock data.
摘要:
The subject matter of the invention is a process for controlling a multiplicity of spray tools for the surface coating of vehicles or parts thereof. With stored program control, the settings for the multiplicity of spray tool which determine the paint flow through each tool are issued centrally to the control elements associated with the spray tools. The trajectory points for the tools, which are stored with coarse spacing or obtained by coarse interpolation from already stored trajectory points, are applied as reference values to the attitude controllers serving each spray tool; from the said position controllers, additional trajectory points are determined by fine interpolation between the transmitted trajectory points and processed in the position controller by means of actual position values.
摘要:
A yarn supply system having a plurality of feeders associated with a textile machine. Each feeder having its own speed control system including a variable speed drive motor and a variable speed controller which includes a programmable control unit which is capable of responding to the actual yarn consumption requirements and responding to a main control apparatus message. The main control apparatus including a yarn feed rate anticipating unit that represents additional intelligence to the feeders. The yarn feed rate anticipating unit becomes informed about a weaving pattern stored in the main control apparatus memory and transfers a message via a message transfer network to individual feeder programmable control units to accelerate or decelerate in advance of an actual winding-on requirement.
摘要:
A programmable machine is provided with a programmed computer and a number of actuators, the operation of the latter being controlled by the computer in conformity with this computer program. The computer also includes an operating program which co-operates with a display device and a data input device for the input of instructions to the computer. The operating program responds to a sequence of the entered instructions displayed on the display device having a separate display field for each actuator or a group of actuators and enabling an operator to enter instructions with the data input device into each field to define the movement of the respective actuator and the relationship between actuators. The display device illustrates the operating sequence of the machine as a diagram. The operating program translates this information into a machine code program controlling the operation of the actuators.
摘要:
A pulse width moduation (PWM) scheme provides for digital implementation of robot control commands. For this purpose, it provides time stabilized current sampling synchronized to the sampling frequency of the position and velocity loops in the robot control. The PWM scheme enables accurate motor current measurement through usage of a single current sense resistor independent of the number of legs in a power amplifier configuration. This scheme permits commercially available, low cost, power blocks to be used for implementation of robot control system power amplifiers.The PWM scheme is cost effectively implemented in a semi-custom large scale integrated (LSI) circuit which provides the digital interface between a torque loop microprocessor and the drive circuitry for the power handling devices used to apply voltage to the robot axis actuator. Interface and control for three axes is provided by a single LSI device.
摘要:
A digital control is provided for a robot having a plurality of arm joints. The control includes an electric motor for driving each of the robot arm joints and a power amplifier supplies drive current to each motor.Each joint motor has feedback control loop means including at least digital position, velocity and torque control loops operable at a predetermined sampling rate to control the associated power amplifier. Digital motor position, velocity and drive current feedback signals are generated for the control loop means for all of the robot axes.Paired system microprocessors or paired position/velocity microprocessors generate position commands for the feedback control loop means in accordance with predefined moves set forth in a robot program. A planning program generates a time profile including acceleration, slew and deceleration time segments for each commanded robot program move.A trajectory program generates position commands for each of the feedback control loop means in accordance with a curved path trajectory and in accordance with the time profile applicable to the current move segment.The trajectory program employs stored third order polynomial equations and arc equations each having predetermined variable parameters operative to particularize that equation to a commanded curved path segment. The trajectory program responds to parameters specified by the robot program and implements the stored equations corresponding to the specified parameters to generate the position commands and define a tool tip trajectory corresponding to the curved path defined by the robot program.
摘要:
An apparatus for controlling the motion of machine tool components about or along respective axes comprises a plurality of structurally identical processors each capable of controlling one complex motion or a plurality of simple motions. Each processor receives desired position values from a numerical control unit and has access to a first memory storing actual position values and a second memory storing desired rates of motion generated by the processors.
摘要:
A multiple-function hand useful in automated laboratory operations, particularly liquid transfer operations. A gripper and a piston operated syringe are made compatible on a single function by mounting such that their mechanical actuating mechanisms are operated parallel to one another, while the operating vector of the syphon, i.e., the direction of piston movement and direction of gripper lift are at right angles one to the other.
摘要:
In a numerically controlled machine includes a first computer which stores command data for a path and derives sets of interpolation point data from said command data for a plurality of points along the path. A second computer stores two sets of interpolation point data from said first computer and extrapolates a set of said stored interpolation point data by incrementing velocity with acceleration and position with velocity using a noncircular high order polynomial to produce a sequence of driver command signals.A timing means provides timing signals to the second computer to determine the number and rate of iterations of drive command signals in said sequence as predetermined by the first computer for each set of interpolation point data.The program execution time in the second computer is reduced by a unique method of multiprecision calculation which requires a carry flip flop for each variable calculated and a sign flip flop for eliminated word segments. The memory address decoding for the two sets of interpolation print data are interchanged after each sequence invisibly to the computers. An index register causes data memory address decoding for a plurality of motor drivers invisible to the computers and selects an output to the appropriate motor driver. The second computer includes a manual mode program to calculate the sequence of driver command signals using a manually induced velocity vector. A phased locked loop in the timing means controllably reduces the iteration rate to zero in response to an error signal.