Search Engine www.edaboard.com

# Braking

Are you looking for?:
motor braking , voltage braking
60 Threads found on edaboard.com: Braking

## Signal value goes to 'X' in between,want to drive it to either '0' or '1'

* driving different bits of a signal from different processes can work on some tools, and can fail on others. If this is the case, you need to complain to the tool vendor, as its braking the lrm. Arrays and records are all counted as separate objects and should be drivable from separate processes.

## Direction determination using accelerometer and gyroscope

Hello People, Can we determine the direction of robot movement (forward or backward or standing still) using data combined from accelerometer and gyroscope ? As long as the robot is moving forward ( starting to move, moving with constant velocity and decelerating/braking to zero) I want to show as forward. Similarly for backward movement.

## simple logic circuit related question

Hi friends, I have been braking my head the entire day to solve this simple problem. 1) 1 digital input low/high (will be continuous say if its low then it can be low for days and vice versa) 2)output needs to be high for n seconds and should be low when the input changes. if I need to do with a mcu I would have done in minutes but i need

## braking resistors pins

hi there, is there any standard for electronic components like resistors that explain how much force is need to break resistor pin? like this : 106600

## a non contact braking indicating system

hai am pursuing 2nd year m.tech in hyderabad. can u help me the how to interface with micro controller and Bluetooth module how it do and send mee the c code

## Vehicle braking dynamics simulation... help needed

Dear all, I am working on a simulation based project in which.. i have to show: AEB=Autonomous Emergency braking,,,, with a controlled slip ratio value of 0.2 And distance measuring system which measures the distance between host and target vehicle. I have to build this project simulation based only... and i want to build this on Simulink or

## Servo motor code with ramping

From the present level of information, I can only say, this shouldn't happen. Regular H-bridges don't need additional means against overvoltages (and not even snubbers with a good layout). Where does the energy go in regenerative braking or fast stop? It shouldn't be a a problem with battery supply, but other power supplies may need a braking

## Regenerative braking of dc motor without using sim power systems

A high current capable boost converter is what you want. It will run differently than a normal fixed output, slightly variable input - you need a wide range of input from the full speed armature voltage, to as low a RPM's back EMF as you can manage, so that your braking recoups as much kinetic energy as possible. And your braking effort needs to b

## Basic Circuit Help. thanks

A mechanical furling system is more efficient but if you want to use dynamic braking, you need to measure the frequency of the output of the generator, from this you can work out the RPM. Then set limits of how fast it has to rotate before the load resistors are connected. As it exceeds each limit, connect another resistor in parallel across the o

## Motor position control

I think this would depend on the dynamics of the motor to a large extent. How fast was it going, what is its inertia, what braking mechanism you use, etc. There obviously has to be some overshoot, and you could try to pre-compensate for the overshoot based on practical measurements/ experiment ? And yes I have positioned dc motors quite accurat

## can anyone reprogram or erase the memory in a ST10F269-T3 chip

Hello we remanufacture truck braking electropneumatic modulators. The ECU in one has a ST10F269-T3. We need to erase the mileage & operating data recorder information, however, I imagine that it will be write protected. Anyone have any ideas?

## What kind of electrical motor can resist motion when stopped?

A shorted DC motor generates a speed proportional braking torque, but no "holding" torque at zero speed. To achieve the latter, you'll need a step motor, a motor with servo control or a mechanical brake.

## How to design a Dynamic Braking Unit like DELTA VFDB4045, 460v,45KW

Hi everyone. I want to study and design a dynamic braking unit. i have a braking unit of DELTA, Model number VFDB4045, 460V, 45KW. The circuit of this unit is not clear and may be i could find it helpful. if anyone can provide a circuit diagram, or operational step of each circuit blocks.

## LDO at no load condition

You might instead assert a minimum load, or set values for the feedback divider network that impose a minimum load current. Or make the output stage more like Class AB, with a "braking" NMOSFET. Any of these will limit how high the output impedance, and how low-frequency the output pole can be.

## DC motor Controller Reverse enginering

Hi i am an electronics students and i am doing a project on brushed motor controller .. i have experimented with some circiuts some with sucess , some with flames unpleasent endings anyway i am intresed in making a 60A H bridge and most important part is a the protection agianst overvoltage , overcurrent , spikes , sudden braking ......

## Simulink design for regenerative braking from pedal brake to the battery

Hi guys. I would like to seek assistance and advice on constructing a MATLAB simulink model to display the simulation result for regenrative system starting from the pedal brake, till the battery side to monitor any output. For your information, I'm currently doing a project about retrofit conversion of hybrid electrical vehicle (HEV), and my

## How to wire a VFD ? What things and accessories are required for good hook up of VFD

How to wire a VFD ? What things and accessories are required for good hook up of VFD ? 1) First Use a Three Phase Breaker for the input of VFD. 2) Connect the output of this breaker to a EMI Filter. 3) Then connect to R, S & T of the VFD 4) Connect braking Resistors for frequent stops and starts of VFD 5) Connect the Output U , V & W of the

## Help: Regenerative braking - Simulink model of bidirectional DC-DC converter

Hello dear friends, My project is about improving an AC motor drive's efficiency by implementing regenerative braking and i really need your kind help. Does anyone have a simulink model of a bidirectional DC-DC converter for connecting a storage battery (for charging and discharging) to the DC bus of a 3-phase PM motor drive that I could gain ac

## brushless dc motor help.

Can somebody tell me how to perform regenerative braking of a brushless dc motor drive in PSIM..?

## DC shell - report disable timing

When I cast the command 'report_disable_timing' with dc_shell, what is the difference between the different flags: c case-analysis C Conditional arc l loop breaking u user-defined L stored loop breaking What do they actually mean, precisely? I know that 'l' (loop braking) means that there is an asynchronous loop inside my design, but

## Gyro scope or Accelerometer???

Use an accelerometer to measure linear acceleration (or braking) The gyro is good for rotational measurements

## Regenerative Braking

I think you want to use the control loop and command a lower speed than rotor speed. You have to respect the battery's charging current limitations and you want some proportionality if this is a transportation application - who brakes by locking them up? If you can command negative torque, this is your best regen braking I think. But you do want

## proteus simulation design for motoring & regenerative braking in dc motor

I need a design for motoring & regenerative braking of DC motor that works in proteus ISIS 7 professional. I need the .DSN file or any images that helpful for me. Please help me anyone.........

## Regenerative braking dc motor controller

Hi i'm trying to implement regenerative braking on a simple PM dc motor controller i'm aplying a pwm signal to the mosfet to control the motor speed, but i can't figure out how to put the regen part working was hoping that when the M1 mosfet is off, that the motor current wou

## Yaskawa H1000 drive displays OL1 & OL2 alram after 25 minutes (running process) or so

Yaskawa H1000 drive displays OL1 & OL2 alram after 25 minutes (running process) or so the siemens 17KW motor gets very very warm .... It was giving the OL1 fault then when i tried it again it given OL2 fault .... the amps are in the range of 25.5 A to 31.5 A ..... braking resistors are used in this process , its a main motor connected wit

## 24v DC motor controller help

Hello all. I've cobbled together a 30amp bi-directional motor controller which will ultimately be installed in my wife's 8mph Mobility Scooter. The problems that I have, are a requirement for regenerative braking, and a way of controlling the electro-mechanical brake, which is comprised of a 2amp hold-off coil on a stator-lock attatched to the mo

## how to design a boost converter for a dc motr application?

hello everyone currently am working on a project to design a boost regulator for an electric vehicle system. The boost converter should be able to convert a varying input voltage from 6 to 12V dc to 13.5V dc which would be used to charge the batteries during the process of regenerative braking. i made the calculation for the boost converter the spe

## How to calculate the braking resistor & wattage value for a 3.7 KW 3 phase inverter ?

There is not any simple formulas ... The change in kinetic energy of the load during deceleration is dissipated in the brake resistor. If you decelerate the load from full speed to zero speed, the energy dissipated in the resistor is equal to the kinetic energy of the driven load and motor minus the load and rotational losses. High inertia giv

## Sequence of the connections of a 3 phase motor inside the panel of a machine ?

Good reading about motors starting and protection systems Presentation : ? AC motors starting and braking systems ? AC motors protection devices and failure analysis ? Protection devices selection guide

## Question:regenerative braking in a traction motor

I guess you'd begin with determining the motor output voltage (RPM and constant) and the boost ratio to get 600V + delta (diode drop, series resistance, braking current) which with an assumption about converter operating mode (conduction) ought to get you a duty cycle from boost converter basic equations. Treat the motor as a voltage source and it

## What these terms mean: Jog frequency, Frequency Reference Bias

What these terms mean: Jog frequency, Frequency Reference Bias, Frequency Reference Gain, Dc Injection braking & memobus control ? thanks in advance

## Helpo with an electronic brake for a DC motor

HI, I must up-front admit I am not an expert in this area. But from what I can imagine, a DC motor would have some inertia even when you stop supplying power to it. Shorting its supply might not have much effect. On the other hand, after you switch off its supply, a negative voltage applied momentarily would provide active braking. The duration of

## resistor query for car sensor

The anti-lock braking system needs some way of knowing when a wheel is about to lock up. The speed sensors (variable-reluctance sensors/ hall-effect type sensors) which are located at each wheel, provide this information, so you can’t replace sensors by resistors.

## What does it mean by these terms : DC Reactor Connection, Braking Resistor Connection

What does it mean by these terms : DC Reactor Connection, braking Resistor Connection & braking Unit Connection ? What is DC Reactor ? With what components its made up of ? What is braking Unit ? With what components its made up of ? What is braking Resistor ? With what components its made up of ? (...)

## Workshop compressor (1,5kW)

a typical compressor with 1,5kW power and rotational speed of 2840rpm. The ratio is ? therefore the shaft of the pump has 1500rpm, which allows the use of tools like a painting gun. The pump is from a Star car, the cylinder from the trailer braking system. The compress

## Automated Car Braking System with Fuzzy Logic

hi... i'm planning to do a project related to the Fuzzy Logic... but i'm totally know nothing about it.. i'm not sure what controller can be used for it, how's the programming, what devices should?? what i plan to do is where the car will stop automatically when the ultrasonic sensor detect the distance relative to the speed of the car and automa

## Speed/torqe curve of motor

their torque speed characteristics curve at various conditions i.e under starting,running,braking conditions ,,.....etc...

## camera axes controller

It depends very much on the size of the camera. Are you thinking in terms of a small webcam or a heavy professional video camera? In general, use two stepper motors with reduction gears if necessary. Steppers have the advantage of staying locked in position, if you use normal motors you would also need a braking system so they don't roll by themse

## PWM signals could be used within vehicle

hello, how PWM signals could be used within a vehicle break control system to deliver braking force to a wheel and how control system would convert the braking force into actual PWM control value and i would like improve by a ddition of closed-loop. thanks ..

## understand a dynamical braking system

I doubt, that the circuit is correct (respectively complete). The capacitor will prevent an armature DC current, thus I can't see a braking action.

## DIY Hand Controller wiring questions

Hello. I'm making an electric skateboard and will be using this motor controller: Kelly 24V 300A (peak) w/ the wiring schematics (page 10): [URL="www.kellyco

## low side power mosfet driver ?

I want drive the braking resistor of servo driver I will have 10 KHz PWM signal

## Question regarding charging a lead acid battery

I don't have a braking system on the turbine. Is it not possible to have a constant current charging using a high value inductance in series with the battery? Can anyone please explain what methodology of charging will perfectly fit the given constraints?

## extracting gerber file from PSB

Hi all, This is Emiliano and I'm new in the forum. I have a question: as far as you know, is it possible to extract a gerber file from a PCB? Is there any hardware/software able to recognize and draw the design of a PCB. An alternative solution would be expensive, such as using X-rays or braking it. Thank you, Emiliano

## fully analog 4 quadrent chopper for dc motor control

hi all..... I m building a 4 quadrant chopper using IGBT-H bridge for sep ext dc motor. motor specifications are 230v, 3.7 A, 0.75hp. Im trying to make a controller using uc 3638 pwm without any microcontroller. The problem i am facing is how to design the control circuit for reg braking ... i know the topology for regenerative braking b

## Role of shunt resistance in servo drives???

Hello, The purpose of this resistor is disipate the energy recovered to the input filter capacitor during braking and avoid overvoltage. During braking cycle, the motor turns into a generator converting the cinetic energy to current, that find its way to the input capacitor usually trough the free wheeling diodes. If you have a high inertia load

## 3 Phase Inverter with braking diodes

Hello I've seen that some 3 phase bridge topologies use three extra diodes in serires in the branch. This topology is shown in the image bellow. For a BLDC motor drive, will this topology help to handle back EMF? will this make a more robust brige? what other considerations should be taken, to implement this? Thanks in advance. Alex

## Applying brakes to a 1-Phase AC Induction Motor

My aim is to apply brakes to a 1-Phase AC Induction Motor. Do i simply swap the motor terminals with the a DC source? or there are any better ideas for AC motor braking? Motor specs: 220VAC 0.25Hp 1phase Regards.

## regenerative braking - battery charging question

Hi All, I am trying to store the energy from regenerative braking to the battery. will the battery store the energy immediately? Or battey will take some time to absorb energy? ( Since in the regenerative braking, less energy only be produced before stop) Do we need any capacitor to store the energy from motor and then to bat

## [Needed]AC motor braking by DC injection

Hi All, I have an ac induction motor of about 0.5hp. I need to stop it by e-braking. I heared about e braking by DC voltage injection. Can you guide me by giving some explaination or links or schematics. Regards, Vamanan Kutty