Degree of freedom digital control system for a hydraulic press
First Claim
1. A digital computer based degree of freedom (DOF) control system for driving a movable member about a plurality of degrees of freedom as a function of a preestablished motion control program, including:
- actuators responsive to actuator commands for driving the movable member at a plurality of spaced driving locations;
feedback means for providing;
digital position feedback data representative of positions of the movable member at the spaced driving locations; and
digital load feedback data representative of loads on the moving member at the spaced driving locations;
memory means for storing data including the position feedback data, load feedback data, and data representative of the preestablished motion control program; and
digital control computer means coupled to the actuators, feedback means, and memory means for generating the actuator commands as a function of the position feedback data, the load feedback data and the preestablished motion control program, the digital control computer means including;
DOF feedback sum means for computing position DOF feeback sums, load DOF feedback sums and centroid DOF feedback sums as a function of the position feedback data and load feedback data;
command generator means for computing servoloop input commands including, position servoloop commands, load servoloop input commands and centroid servoloop input commands as functions of the preestablished motion control program;
DOF servoloop means for computing servoloop output commands including, position servoloop output command, load servoloop output commands and centroid servoloop output commands as functions of associated DOF feedback sums and servoloop commands;
mode select means for selecting servoloop output commands from among the position servoloop output commands, the load servoloop output commands and the centroid servoloop output commands as a function of the motion control program; and
DOF output sum means for computing the actuator commands as a function of the selected servoloop output commands.
1 Assignment
0 Petitions
Accused Products
Abstract
A digital computer-based degree of freedom (DOF) control system for driving a moving ram of a hydraulic press about a plurality of degrees of freedom as a function of a preestablished motion control program. Actuators responsive to actuator commands drive the moving ram at a plurality of spaced locations. Digital feedback data representative of the positions and loads of the moving ram at the spaced locations are stored in memory. Motion control data representative of the motion control program is also stored in memory. A digital control computer implementing servoloop operations generates the actuator commands as a function of the feedback data and motion control data.
-
Citations
27 Claims
-
1. A digital computer based degree of freedom (DOF) control system for driving a movable member about a plurality of degrees of freedom as a function of a preestablished motion control program, including:
-
actuators responsive to actuator commands for driving the movable member at a plurality of spaced driving locations; feedback means for providing;
digital position feedback data representative of positions of the movable member at the spaced driving locations; and
digital load feedback data representative of loads on the moving member at the spaced driving locations;memory means for storing data including the position feedback data, load feedback data, and data representative of the preestablished motion control program; and digital control computer means coupled to the actuators, feedback means, and memory means for generating the actuator commands as a function of the position feedback data, the load feedback data and the preestablished motion control program, the digital control computer means including; DOF feedback sum means for computing position DOF feeback sums, load DOF feedback sums and centroid DOF feedback sums as a function of the position feedback data and load feedback data; command generator means for computing servoloop input commands including, position servoloop commands, load servoloop input commands and centroid servoloop input commands as functions of the preestablished motion control program; DOF servoloop means for computing servoloop output commands including, position servoloop output command, load servoloop output commands and centroid servoloop output commands as functions of associated DOF feedback sums and servoloop commands; mode select means for selecting servoloop output commands from among the position servoloop output commands, the load servoloop output commands and the centroid servoloop output commands as a function of the motion control program; and DOF output sum means for computing the actuator commands as a function of the selected servoloop output commands. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A degree of freedom (DOF) control system for control of the movement of a body in a plurality of degrees of freedom, the control system comprising:
-
motion actuators responsive to actuator commands for applying force to the body at a plurality of mutually spaced locations; feedback means for providing feedback information relating to changes in position of selected points on the body; and signal processing means for generating the actuation commands, the signal processing means including; memory for storage of contemporaneous servoloop output commands, feedback information and DOF feedback sums; feedback summing means responsive to the feedback information accessed from memory for generating DOF feedback sums and storing DOF feedback sums to memory; command means operating on a motion control procedure for generating servoloop input commands; DOF servoloop means for generating the servoloop output commands as a selectable function of the DOF feedback sums and the servoloop input commands; and DOF summing means responsive to the servoloop output commands for generating actuator commands. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
-
Specification