... root-locus domain. Mechatronics Kevin Craig DC Motor / Tachometer Closed-Loop Speed Control System 24 Mechatronics DC Motor / Tachometer Closed-Loop Speed Control System 1. Introduction This ... well-behaved speed- torque characteristics, and adaptability to various types of control methods. DC motors are classified as either integral-horsepower motors (≥ 1 hp) or fractional-horsepower motors ... power amplifier. Motor speed is measured using an analog tachometer. Figure 2. Physical System Mechatronics Kevin Craig DC Motor / Tachometer Closed-Loop Speed Control System 5 Most...
Ngày tải lên: 25/01/2014, 13:20
Tài liệu Speed Control SPC GAS SPRINGS, cushioned pptx
... Overview of Gas Springs 2 . 21369 . 2007 . 1 Speed Control TM « SPC Gas Springs, cushioned 2486.12. FIBRO SPC Gas Springs Speed Control TM « are designed to reduce or eliminate the ... caused by the increased return travel speed in high speed presses (link drive presses). SPC Gas Springs feature an integral return travel delay which reduces the speed of the gas spring to 0.4 m/s ... 2 . 21370 . 2007 . 1 3 Speed Control TM « SPC Gas Springs, 2486.12. cushioned subject to alterations Force in daN at Piston...
Ngày tải lên: 22/01/2014, 02:20
HOBBYKING BRUSHLESS ELECTRONIC SPEED CONTROL FOR CAR OR TRUCK potx
Ngày tải lên: 16/03/2014, 12:20
báo cáo hóa học:" Scan speed control for tapping mode SPM" docx
Ngày tải lên: 21/06/2014, 17:20
Bộ điều khiển số PID điều khiển DC motor
... chúng em đã chọn đề tài nghiên cứu : “Bộ điều khiển số PID điều khiển DC motor . Đồ án của chúng em điều khiển động cơ một chiều bằng PID viết trên nền vi điều khiển, giao tiếp với máy tính ... tích phân (bộ PID) Bộ điều chỉnh PID lý tưởng là cấu trúc ghép song song của ba khâu: P, I và D. Hình 2.8 Sơ đồ khối của bộ điều chỉnh tỉ lệ - vi tích phân Phương trình vi phân của bộ PID lý tưởng: ... thường được sử dụng là hiệu chỉnh nối tiếp với bộ điều khiển PID số. Ta có sơ đồ điều khiển với bộ PID số: Xuất phát từ mô tả toán học của bộ PID liên tục ở trên ta có: u ( t ) =u p ( t ) +u D ( t ) +u I ( t ) ...
Ngày tải lên: 23/04/2013, 14:48
Design and Implementation of a Three-Phase Induction Motor Control Scheme
... 3.1. The basic control format In essence, we are endeavoring to design a controller that can vary the torque induced in the rotor of the motor. To do this, the induction motor controller will ... for an induction motor An induction motor is an asynchronous AC (alternating current) motor. The least expensive and most widely used induction motor is the squirrel cage motor. The major ... 6.10. The speed response of the control system where the proportional gain of the speed controller is increased As you can see, the transient response is faster as it follows the speed command...
Ngày tải lên: 27/10/2013, 23:15
Tài liệu The PID Control Algorithm ppt
... B PID Control PID Control Figure 17 Two PID controllers that share one valve. Suppose the output of a controller is broken by a selector, with the output of another controller taking control ... commercial controllers allow the user to specify Proportional only controllers, proportional-reset (PI) controllers, and PID controllers that have all three modes. The majority of loops employ PI controllers. ... transmitted to the final control element. • A final control element . A valve, air flow damper, motor speed controller, or other device receives a signal from the controller and manipulates...
Ngày tải lên: 22/12/2013, 21:15
Motor control sensor feedback circuits
... Inc. BACK EMF CONTROL METHOD The back electro-magnetic-force (EMF) or sensorless motor control method obtains the speed and position of the motor directly from the voltage at the motor windings. ... stable, reliable and cost-effective control system. Further details on motor control circuits and sensors are provided in several books, including Motor Control Electronics” (10). In addition, ... Parekh, Rakesh, “AN889 - VF Control of 3- Phase Induction Motors using PIC16F7X7 Microcontrollers”, Microchip Technology Inc., 2003. 10. Valentine, Richard, editor, Motor Control Elec- tronics Handbook”,...
Ngày tải lên: 03/01/2014, 18:55
DC bus control of variable speed wind turbine using a buck boost converter
... Operation modes of buck boost converter 2 Unlike constant -speed control, a variable -speed control can adjust the speed of the turbine as the wind speed changes, so as to operate at the peak of the ... proposed MPPT control method. Fig.7: Wind turbine output power without MPPT control method for low wind speed. Fig.8: Wind turbine output power with MPPT control method for low wind speed. ... low wind speeds. Fig.9 : Wind turbine output power without MPPT control method for high wind speed. Fig.10 : Wind turbine output power with MPPT control method for high wind speed. ...
Ngày tải lên: 03/01/2014, 19:15
New control strategy for variable speed wind turbine with DC DC converters
... converter LOAD P electSpeed Duty ratio VSWT Aero dynamical / Mechanical unit MPPT LPPT Operator Controller speed d Control strategy VSWT Control unit VSWT Electrical unit Fig. 1. Control concept ... power in above rated wind speeds. This control acts directly upon an additional hydraulic system and is very important to protect the blades from breaking. The speed control algorithm serves ... two optimum wind turbines power/torque versus speed characteristics. Two control loops: inner feed forward current control loop and outer voltage control closed loop are applied for the non-inverting...
Ngày tải lên: 03/01/2014, 19:15
Direct torque control of brushless DC motor with non sinusoidal back EMF
Ngày tải lên: 03/01/2014, 19:44
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