11. One axis of an NC positioning system is driven by a stepping motor. The motor is connected to a lead screw whose pitch is 4.0 mm, and the lead screw drives the table. Control resolution for the table is specified as 0.025mm. Determine (a) the number of step angles required to achieve the specified control resolution, (b) the size of each step angle in the motor, and (c) the linear travel rate of the motor at a pulse frequency of 200 pulses per second.

11. One axis of an NC positioning system is driven by a stepping motor. The motor is connected to a lead screw whose pitch is 4.0 mm, and the lead screw drives the table. Control resolution for the table is specified as 0.025mm. Determine (a) the number of step angles required to achieve the specified control resolution, (b) the size of each step angle in the motor, and (c) the linear travel rate of the motor at a pulse frequency of 200 pulses per second.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter16: Advanced Automatic Controls-direct Digital Controls (ddcs) And Pneumatics

Section: Chapter Questions

Problem 3RQ: One advantage of a modern control system is A. simplicity. B. faster response. C. ability to...

See similar textbooks

Similar questions

For a 1-degree-of-freedom robot arm, it is needed to use a DC motor. Draw a blockdiagram for a mechatronic system that controls the position of this robotic arm forgripping objects. Suggest a sensor system and clarify the flow and nature of signals inyour block diagram.
One advantage of a modern control system is A. simplicity. B. faster response. C. ability to modulate. D. that they are less expensive.
A CNC machine tool table is powered by a servomotor, ball screw, and optical encoder. The ball screw has a pitch = 7.5 mm and is connected to the motor shaft with a gear ratio of 12:1. The optical encoder is connected to the ball screw and generates 200 pulses/rev of the screw. The table must move a distance of 300 mm at a feed rate = 450 mm/min. (a) Determine the pulse count received by the control system to verify that the table has moved exactly 300 mm. Also, what are (b) the pulse rate and (c) motor speed that corresponds to the specified feed rate?
A NC machine tool table is powered by a servomotor, lead screw, and optical encoder. The lead screw has a pitch = 5.0 mm and is connected to the motor shaft with a gear ratio of 16:1 (16 turns of the motor for each turn of the lead screw). The optical encoder is connected directly to the lead screw and generates 200 pulses/rev of the lead screw. The table must move a distance = 100 mm at a feed rate = 500 mm/min. Determine (a) the pulse count received by the control system to verify that the table has moved exactly 100 mm; and (b) the pulse rate and (c) motor speed that correspond to the feed rate of 500 mm/min. Solve the problem assuming the optical encoder is directly coupled to the motor shaft rather than to the lead screw.
Derive the inverse mobile kinematics for the same robot, and compute thematrix with l = 0.325 m
The worktable of a CNC machine tool is driven by a closed-loop positioning system that consists of a servomotor, ball screw, and optical encoder. The screw has 4 threads/in and is coupled directly to the motor shaft (gear ratio = 1:1). The optical encoder generates 180 pulses per motor revolution. The table is programmed to move a distance = 6.0 in at a feed rate = 25.0 in/min. (a) How many pulses are received by the control system to verify that the table has moved the programmed distance? Determine (b) the pulse rate and (c) motor speed that correspond to the specified feed rate.
An incremental optical encoder coupled to a robot wheel has 2880 slots. Find: a) change in angle when 1200 pulses counts are obtained b) number of pulse counts when the angular change is 5000 degrees
Determine the controllability and observability for this system
For the following automatic control systems commonly encountered in daily life, identify the devices that perform the measurement (M), decision (D), and action (A) functions, and classify the action function as “On/Off’ or “Regulating” (time-varying until reaching a setpoint). Also, draw a sketch of the control loop for each system and determine whether the control is feedback or feedforward. Automatic sprinkler system for fires Automobile cruise speed control Refrigerator
Please give me answer in 45 min. Calculate the minimum technical specifications of a linear pneumatic cylinder that meets the requirements of raising the transfer mechanism in 3 seconds and lowering in 2 seconds.Specifically, the distance to travel (stroke) and diameters.
Define the axis of sight, horizontal axis, and the vertical axis in a total station and describe their relationship to each other.
In the mid-1900s, several technological and analysis concepts came together to make the PID controller widely accepted as an effective industrial controller. Discuss in detail and evaluate the performance of a PID or three-term controllers that are widely used in a typical paper mill where there may be about 2000 control loops, and over 90% of these would be PID control loops.