Modeling, Measurement and Control P21

... problems, increased reliability and improved thermal capacity are achieved. On the other hand, brushless motors require more complex and expensive control systems. Sensors and switching circuitry are ... cheap, robust, and reliable, and at the same time offer good torque characteristics. However, control of such motors is rather complicated. Advanced vector controllers are expen...

Ngày tải lên: 25/10/2013, 13:15

... Figures 18.5, 18.6, and 18.7 where (18.30) and for i = 1, 2, …, n, j = 1, 2, …,m we have (18.31) For j = 1 we replace t 2ij with For j = m we replace t 6ij and t 7ij with where and i + n = i. ... × 25) = (36 × 75) ∗ (75 × 25). and the dimensions are (36 × 6) = (36 × 18) ∗ (18 × 6). and the dimensions are (36 × 24) = (36 × 36) ∗ (36 × 31) ∗ (31 × 24). The control inputs u αi...

Ngày tải lên: 18/10/2013, 09:15

... the command and control of a vector such as position or force is not enough to control the interaction between systems (dynamic networks). The controller must also be able to command and control ... measurements, and a controller involving a PD regulator and robust control part. The purpose of the robust controller is to ensure that the control tracking error (i.e., the diff...

Ngày tải lên: 29/10/2013, 20:15

... consequent is a control action. Thus, the rule base can be represented as: R 1 : if X 1 is A 11 and … and X n is A 1n , then Y 1 = B 11 and … and Y m = B 1m R 2 : if X 1 is A 21 and … and X n ... N.J. Mandi ˇ c, E.M. Scharf, and E.H. Mamdani. Practical application of a heuristic fuzzy rule-based controller to the dynamic control of a robot arm. IEEE Proceedings on...

Ngày tải lên: 29/10/2013, 20:15

... The control station consists of a TV monitor, and a control panel with joysticks and pushbutton commands. Bi-directional radio links allow simultaneous transmission of 1. Commands from the control ... desired (commanded) one. In this case, the above equation becomes (26.34) where u R and u L are left- and right-wheel control inputs. From (Equations 26.22 and 26.23) we obt...

Ngày tải lên: 09/11/2013, 05:15

... Processes and Their Monitoring and Control 8.1 Assembly Processes 8.2 Monitoring and Control of Resistance Welding Process 8.3 Monitoring and Control of Arc Welding Processes References 9 Control ... Monitoring and Control 6.5 Other Process Phenomena 6.6 Future Direction and Efforts Acknowledgments References 7 Forming Processes: Monitoring and Control 7.1...

Ngày tải lên: 17/12/2013, 13:15

... interconnected set of links and powered joints that support or move a wrist, a hand or an end effector. • Wrist: a set of joints between the arm and the hand that allows the hand to be oriented to the ... high positioning accuracy for precise assembly, fast and vibration-free motion for short cycle times, and advanced control for path precision and controlled compliance. Figure 28...

Ngày tải lên: 17/12/2013, 13:15

... guidance and control (absolute motion control) • Sensorimotor primitives defined as encapsulations of perception and motion that form domain general blocks for fast task strategies (reactive motion control) The ... meals, pharmaceuticals, and documents along normal corridors. Clear and simple user interfaces, robust robot navigation, and ability to open doors and operate elev...

Ngày tải lên: 17/12/2013, 13:15

... refueled by a robot (left) and a touch-screen terminal for inserting credit card, entering refilling order and printing (right). (From Leondes, C.T., Mechatronic Systems Techniques and Applications, Vol. ... island is guaranteed at all times. Figure 28.33 depicts a refilling station in operation since September 1995 at Fraunhofer IPA. For more than 3 years, the robot has shown its reliabi...

Ngày tải lên: 17/12/2013, 13:15

... and structural vibration of the machine tool and wear, failure, and thermal deformations of the tool (Rangwala and Dornfeld, 1990; Li and Elbestawi, 1996). Currently, commercially available controllers ... sequence of operations and process planning, control of the machines and monitoring of the processes (on/off line), automation, networking and communication systems, and...

Ngày tải lên: 23/01/2014, 06:20