stepper motor control circuits pdf

... drive a stepper motor with a dsPIC33F motor control family DSC The eight PWM channels (six pins from the PWM1 module and two pins from the PWM2 module) are used to control a stepper motor in ... tuning PI controller Stepper motors have two windings, so two PI controllers are needed, one for each winding EQUATION 1: MOTOR WINDING EQUATION V u  R i  L di dt L = Motor resistance R = Motor ... the PI controller by properly controlling the decay mode CLOSED LOOP PI CURRENT CONTROL Two Proportional Integral (PI) controllers are used to control the current, one for each of the two motor

Ngày tải lên: 11/01/2016, 16:55

... Output Control DC Motors Motor ports are numbered from 0 to 5 ports for motors 0 to 3 are located on the Microprocessor Board while motors 4 and 5 are located on the Expansion Board Motor ... motor m o 134 CHAPTER 7 IC MANUAL The power level of motors may also be controlled This is done in software by a motor on and o rapidly (a technique called pulse-width modulation The motor( ... A library routine allows control of a single servo motor The servo motor has a threewire connection: power, ground, and control The power and ground of the servo motor connect to the power

Ngày tải lên: 10/08/2014, 02:20

... Basic Electronics Diode circuits Contents • Diode models • Typical diode circuits & applications • Load line concepts for nonlinear load analysis Prof C.K Tse: Diode circuits What is a diode? ... 50 V Better — 50 – 1.4 = 48.6 V Prof C.K Tse: Diode circuits Application examples clamper dc restorer half-wave doubler Prof C.K Tse: Diode circuits full-wave doubler A nonlinear circuit problem ... characteristic curve Prof C.K Tse: Diode circuits Step : KVL & KCL constraints We also know from KCL : id = iR AND from KVL : vd + vR = Vs = Vs O + = Prof C.K Tse: Diode circuits 10 Step : enforcing KVL

Ngày tải lên: 13/12/2013, 22:15

... to a particular control situation Then, an admissible control action was associated with each control situation The association (or map- ping) from control situations to desired control actions ... of learning control systems and the benefits of augmenting traditional control approaches with learning capabilities INTELLIGENT AND AUTONOMOUS CONTROL SYSTEMS 238 Introduction Control systems ... AND AUTONOMOUS CONTROL SYSTEMS vided to the learning control system to adjust the control mapping, and hence, the fu- ture behavior of the system The majority of early learning control approaches

Ngày tải lên: 14/12/2013, 12:15

... Terms—AC–DC power conversion, actuators, conveyors, current control, phase control, resonance, silicon-controlled recti- fier (SCR), switching circuits. I. I NTRODUCTION V IBRATORY movements represent ... of the controllable mechanical oscillator [14], [15]. Silicon-controlled rectifier (SCR) converters are used for the EVA standard power output stage. Their usage implies a phase angle control ... firing angle provides the controlled ac or dc injection current to control mechanical oscillations amplitude, but not the tuning of their frequency. Since conventional SCR controller operates at

Ngày tải lên: 03/01/2014, 19:16

... information about controllable structures is detailed in the Appendix We recommend that you read this information particularly if carrying out PID control CONTROL STRATEGY The Control Strategy ... determined by a control strategy A control strategy describes how the gate level is set when a condition is met at a control point For a specific gate it is possible to have any number of control strategies ... the furnace and the cycle repeats This type of control is called On/Off control No surprise there This type of control system works by adjusting a controlled variable (in our example the furnace

Ngày tải lên: 25/01/2014, 12:20

... tắt sự phiền toái này bạn vào lại User Accounts chọn Turn User Account Control on or off 3 of 13 Bỏ chọn mục Use User Account Control (UAC) to help protect your computer đi và tiến hành Restart ... chấp nhận kích hoạt chương trình yêu cầu hay không?, thực ra đó chính là tính năng User Account Control (UAC) mới của Microsoft vừa tích hợp vào Windows Vista mà các phiên bản trước đó như XP, ... tôi sẽ gán vào Group Administrators. Bạn làm như sau: Tạo 2 User gccom1 & gccom2 sau đó vào Control Panel chọn User Accounts Tiếp tục chọn mục Manage another account 1 of 13 Sau đó click chọn

Ngày tải lên: 27/01/2014, 15:20

... connector (7) is used to transmit control power for the electric motor (5) and to route low level signals associated with operation of the LVDT (6) The control system for the test prototype ... two major tasks: nominal velocity control of the primary structure and delayed feedback control of the CDR absorber The objective of the nominal velocity control is to track a desired overall ... operations executed in the control loop (delay and gain), simplicity of implementation (only one or at the most two variables need to be measured), complete decoupling of the control algorithm from

Ngày tải lên: 27/01/2014, 15:20

... Slaughter Hazards and Controls D-14 Table - Red Meat Slaughter: Beef D-15 Section IV - Red Meat (Swine) Slaughter Hazards and Controls ... there may be other control measures The examples assembled here are to help plant HACCP teams think through all the hazards that could affect their product and know about various controls that can ... hazards, and controls for beef, swine, and poultry slaughter This section should be used with the process flow diagram developed by the HACCP team Section VI presents hazards and controls organized

Ngày tải lên: 21/02/2014, 01:20

... star–star transformer Motor Three-phase induction motor cage delta-connected 26 Practical Troubleshooting of Electrical Equipment and Control Circuits Power circuits have to carry ... Equipment and Control Circuits Flux produced by a current-carrying coil Flux can...2 Practical Troubleshooting of Electrical Equipment and Control Circuits Voltage is ... Practical Troubleshooting of Electrical Equipment and Control Circuits and quantum of power Distribution circuits where typically the amount of power and distance involved

Ngày tải lên: 07/03/2014, 08:20

... Ứng dụng ic lập trình AT89C51: Dùng bàn phím điều khiển motor, relay, đèn Chúng ta biết, "vật thể tự động hồn chỉnh" phải gồm có: Ngả vào - Bộ nhớ - Ngả ... ta thích dùng photo diode thiết bị điều khiển hồng ngoại, dùng thiết bị điều khiển tốc độ quay motor, dùng mạch đo tốc Bạn dùng ohm kế thơng thường để kiểm tra photo diode, dùng thang đo Rx10K, ... mặt trời phát điện để nạp tích trữ vào nguồn pin charge, dùng nguồn pin để thắp sáng hay làm quay motor Chúng ta thường thấy máy tính số (calculator) có trang bị pin mặt trời để vận hành nguồn sáng

Ngày tải lên: 18/03/2014, 18:20

... states and motor drive states from Figure 2 are tabulated in Table 1. FIGURE 3: THREE PHASE BRIDGE To A -V M +V M A High control A Low control To B -V M +V M B High control B Low control To C -V M +V M C ... the motor in Open Loop mode, start by adjusting the offset control until the motor starts to move You may also need to adjust the PWM control slightly above minimum • After the motor ... consists of one motor terminal driven high, one motor terminal driven low, and one motor ter- minal left floating. A simplified drive circuit is shown in Figure 3. Individual drive controls for

Ngày tải lên: 30/03/2014, 07:20

... [...]... motor control centers, motor control centers also have an overall rating of 600 volts This is the maximum voltage that can be applied to a motor control center A motor control ... of the motor control center Before a motor control. .. exceed this standard Siemens motor control centers meet or exceed NEMA and UL standards Bus bars in Siemens motor control ... combination motor control units found in motor control centers as well as in other types of circuits NEC® Article 430.94 In addition, NEC® Article 430.94 requires a motor control center

Ngày tải lên: 04/04/2014, 10:25

... brushless DC motor 14 Stepper motor 16 Switched reluctance motor 18 Auxiliary blocks 20 4 Microcontrollers ST supplies 8 and 16-bit microcontrollers which meet the performance requirements for controlling ... time and supply circuits. Bi-directional brush DC motor drive 9 Control supply AC switch M Microcontroller Direct-reverse speed induction motor drive AC switch M Control supply Microcontroller Multi-winding ... FeaturesMotor power Speed range AC universal motor drive The motor is connected to the mains through an AC switch. The AC voltage varies across the motor in phase control mode by means of a microcontroller

Ngày tải lên: 22/05/2014, 18:21

... neural -motor models p roposed to account for speech motor control problems. The kinematic data for speech motor control provided in this study may help clinici ans to understand the speech motor control ... speech motor control in childre n with mild spastic CP. It is important to conduct speech motor control ana- lysis in children with CP for several reasons. First, quan- titative measures of motor control ... that speech motor control is impaired in children with mild spastic CP because these children have greater oromotor variability than TD children. We predict that CP children’s oromotor variability

Ngày tải lên: 19/06/2014, 08:20

... modifications in motor control strategies are not easy to be detected throughout a simple observation of motor behavior because aging does not affect a specific part or function of motor control system ... in fine motor control Experimental Neurology 1997, 146:159-170 Sciavicco L, Siciliano B: Robotica Industriale 2nd edition Milano: McGrawn-Hill; 2000 Winter DA: Biomechanics and Motor Control ... their associated motor neurons; reduced efficiency of the sensory system, which limits the performance during complex motor tasks [9]; disturbances in temporal organization of motor synergies

Ngày tải lên: 19/06/2014, 08:20

... is given based on motor control knowledge, as this enhances motor learning and positively influences moti- vation, self-efficacy and compliance [97-100]. Feedback on correct motor performance ... Sensorimotor integration has been proven to be an important condition for motor learning [69]. Functional neuroimaging studies suggest that increased activity in the ipsilesional sensori- motor ... (e.g. by unmasking existing less active motor pathways) that support motor recovery in earlier phases after stroke [68]. Alternatively, increased ipsilateral motor cortex involvement may occur because

Ngày tải lên: 19/06/2014, 08:20

... neurorehabilitation and computational motor learning principles Motor control scientists define motor learning loosely, considering it a fuzzy term that encompasses motor adap- tation, skill acquisition, ... patient's motor controller produces a continuously mod- ulated motor command. Reinkensmeyer and colleagues hypothesized that the continuous output of the patient's motor controller is ... haptic interface between human and the robot may promote different motor control strategies. The choice of a particular motor control strategy may depend on an innate cost function that weights

Ngày tải lên: 19/06/2014, 08:20

... with a HMI, the neural motor controller. The neural controller of the upper limb model The trajectory parameters extracted by the NS algorithm are used to drive a neural controller which activates ... control by FES using a feedback error learning controller IEEE Transactions on Neural Systems and Rehabilitation Engineering 2005, 13(3):359-371 Gomi H, Kawato M: Neural- Network Control ... system is a biologically inspired controller of the stimulation waveforms for the arm. Even though some pioneering work has been found in literature [34], a neural FES controller has not yet been deeply

Ngày tải lên: 19/06/2014, 10:20

... the control channel design and structure to support the capacity enhancing fea- turessuchaslinkadaptation,physicallayerhybridautomatic repeat request (ARQ), and MIMO . Correct detection of the control ... system performance are dependent on the successful decoding of these control channels. The performance of the physical downlink control channels in the typical urban (TU-3 km/h) channel was reported ... principles for the decoding of the LTE physical control channels. We develop and analyze the per- formance of ML receiver structures for the downlink physical control format indicator channel (PCFICH)

Ngày tải lên: 21/06/2014, 11:20