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Simulink pump example

By | 11.10.2020

From the series: Getting Started with Simulink. Explore the Simulink start page and learn how to use several of the basic blocks and modeling components. The example shows how to build a simple model that takes a sine wave input and amplifies it.

It outlines how Simulink makes it easy to drag and drop blocks into your model. It also shows how to run your simulation to verify that your model behaves as expected.

Hello and welcome to the webinar, Simulink for new users. My name is Priyanka, I'm the product marketing manager for Simulink. And today we are going to talk about how you can get started with Simulink. We'll use these four blocks here-- modeling, simulation, essentially three blocks, and collaboration. And we will show you how to use some of the features, get started with Simulink, get running with building models.

So I think we want to present this in terms of, how would you use Simulink. Typically you would start building out a model, designing a system, and then simulating the model to make sure that that system is behaving the way you expect it to behave. And then once you are happy with the results, and you want to share your model with others-- either in your team or across organization-- what's the best way to do that.

So we're kind of going to go over all those different things. We have this common window where you can start typing commands. And to get started with Simulink, first I'll start typing Simulink in here. And if I hit Enter, it opens up a Simulink start page. Let's maximize it. What we have here are a few templates that allow new users to get started with. For example, we have a digital filter, or feedback controller with some of the blocks already existing, so you don't have to open a blank Simulink model.

And if you have other products besides Simulink, as you scroll down, there's different starting point templates for the other products as well.

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But I think for our presentation today, we're just going to start with the blank model, right? Yeah, just to show how easy it is to set up a model, I would like to start with a blank model. And this is how a blank submitted canvas would look like. As a first step, I would just want to save my model. So I just followed My Model and save it in the same current directory as I'm working.

Sounds good. So we have a blank model. And we need to put some blocks inside of here, and so the best way to do that-- probably the library browser, right?Documentation Help Center. Modeling Power Units. Pump and Motor Characteristic Curves. Plot the characteristic curves of components such as pumps and motors to aid in component design and optimization. Choose a web site to get translated content where available and see local events and offers.

Based on your location, we recommend that you select:. Select the China site in Chinese or English for best site performance. Other MathWorks country sites are not optimized for visits from your location. Get trial now. Toggle Main Navigation. Search Support Support MathWorks.

Open Mobile Search. Off-Canvas Navigation Menu Toggle. Pumps and Motors Fixed- and variable-displacement devices for mechanical-hydraulic energy conversion. Simscape Blocks Angle Sensor Ideal angle sensor with measuring range from 0 to degrees Centrifugal Pump Centrifugal pump with choice of parameterization options Fixed-Displacement Motor Hydraulic-to-mechanical power conversion device Fixed-Displacement Pump Mechanical-to-hydraulic power conversion device Jet Pump Jet liquid-liquid pump Porting Plate Variable Orifice Variable orifice between piston and porting plate Swash Plate Swash plate mechanism Variable-Displacement Motor Variable-displacement bidirectional hydraulic motor Variable-Displacement Pressure-Compensated Pump Hydraulic pump maintaining preset pressure at outlet by regulating its flow delivery Variable-Displacement Pump Variable-displacement bidirectional hydraulic pump.

Topics Modeling Power Units Modeling considerations for hydraulic power generation systems Pump and Motor Characteristic Curves Plot the characteristic curves of components such as pumps and motors to aid in component design and optimization.

Select a Web Site Choose a web site to get translated content where available and see local events and offers. Select web site. Angle Sensor. Centrifugal Pump. Fixed-Displacement Motor. Fixed-Displacement Pump.

Jet Pump. Porting Plate Variable Orifice. Swash Plate. Variable-Displacement Motor. Variable-Displacement Pressure-Compensated Pump. Hydraulic pump maintaining preset pressure at outlet by regulating its flow delivery.Documentation Help Center. A characteristic curve is a component-specific plot that shows how a change in one dynamic variable might affect others.

Such curves capture the performance of a component over a range of operating conditions and are commonly used in component selection, sizing, and analysis.

You can plot the characteristic curves of the following blocks from the Hydraulics Isothermal Liquid library:. Fixed-Displacement Pump. Fixed-Displacement Motor. These components have variants that you can select from. Only one variant enables you to plot characteristic curves—the default Analytical or tabulated data.

The types of characteristic curves that you can visualize depend on the block parameterization that you select.

Three performance curves are always shown—one of the volumetric flow rate, one of the mechanical power, and one of the mechanical-hydraulic power ratio. The pressure difference and output shaft speed serve as the independent variables in each case. The pressure difference is shown on the horizontal axis. The shaft speed is shown through a series of curves, one for each value of the shaft speed.

If the Leakage and friction parameterization parameter is set to a Tabulated data option, two additional curves are shown. These curves are of the volumetric and mechanical efficiencies for the Tabulated data — volumetric and mechanical efficiencies parameterization and of the volumetric and mechanical losses for the Tabulated data — volumetric and mechanical losses parameterization.

Here, too, the shaft speed and pressure difference serve as the independent variables. However, the shaft speed is now the variable on the horizontal axis. The pressure difference is now shown through a series of curves, one for each value of the pressure difference. The values plotted are those specified directly in the block dialog boxes. The purpose of these curves is to provide a means to visually check your tabulated data inputs for inadvertent errors.

Simscape Fluids generates the characteristic curves of a component from a test harness for that component. The test harness comprises a simple model with blocks representing the component of interest, the hydraulic operating conditions, the mechanical operating conditions, and the fluid properties.The hydraulic system includes a pump, four-way directional valve, and a double-acting hydraulic cylinder.

Simulation results are displayed in the Simscape Results Explorer, where the piston travel and actuation force are displayed. The 3D animation of the results shows how the system behaves with this more realistic load. In this demonstration, we're going to see how to model a hydraulic actuation system using Simscape Fluids. In our model of the hydraulic actuation system, the spool inside this valve controls the flow of pressure from a pump to either side of a hydraulic cylinder, which can extend and contract.

A motor will drive the shaft of the pump controlling the speed, and a control system will adjust the position of the valve. The model we build will look like this, and we'll see when we run our simulation that the piston goes over its entire range of travel. We will then connect this to a realistic model of a three-dimensional mechanical system to see how it behaves. I'll now switch over to the model so you can see how this is done.

This will open up a Simulink model with the settings recommended for Simscape models. The first thing that we'll need to add into our system is a pump. I will click on the diagram, and type in the word pump. Here I can see a list of the pumps I can choose from, and I will select a fixed displacement pump.

Design Spring Mass Damping System in Simulink - Part 1

I can specify the pump displacement here. Our pump needs to draw fluid from a tank. We will use a hydraulic reference to represent that. I click and drag to create an ideal hydraulic connection, type in reference, and here I have an ideal hydraulic reference, which will represent our tank. To control the flow of fluid from the pump to the hydraulic actuator, we need a directional valve. I'll type in 4, and select from one of the directional valves that are available.

simulink pump example

Double clicking on the block, I can go in and specify the different parameters. There are multiple parameterization options, so I can select the one appropriate for the datasheet that I have, or I can use one that's appropriate for measured data.Documentation Help Center. Modeling Power Units. Pump and Motor Characteristic Curves. Plot the characteristic curves of components such as pumps and motors to aid in component design and optimization.

Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select:. Select the China site in Chinese or English for best site performance. Other MathWorks country sites are not optimized for visits from your location.

Get trial now. Toggle Main Navigation. Search Support Support MathWorks. Search MathWorks. Open Mobile Search. Off-Canvas Navigation Menu Toggle. Pumps and Motors Fixed- and variable-displacement devices for mechanical-hydraulic energy conversion. Simscape Blocks Angle Sensor Ideal angle sensor with measuring range from 0 to degrees Centrifugal Pump Centrifugal pump with choice of parameterization options Fixed-Displacement Motor Hydraulic-to-mechanical power conversion device Fixed-Displacement Pump Mechanical-to-hydraulic power conversion device Jet Pump Jet liquid-liquid pump Porting Plate Variable Orifice Variable orifice between piston and porting plate Swash Plate Swash plate mechanism Variable-Displacement Motor Variable-displacement bidirectional hydraulic motor Variable-Displacement Pressure-Compensated Pump Hydraulic pump maintaining preset pressure at outlet by regulating its flow delivery Variable-Displacement Pump Variable-displacement bidirectional hydraulic pump.

Topics Modeling Power Units Modeling considerations for hydraulic power generation systems Pump and Motor Characteristic Curves Plot the characteristic curves of components such as pumps and motors to aid in component design and optimization. Select a Web Site Choose a web site to get translated content where available and see local events and offers. Select web site. Angle Sensor. Centrifugal Pump. Fixed-Displacement Motor. Fixed-Displacement Pump. Jet Pump.Documentation Help Center.

This example shows a typical power unit consisting of a fixed-displacement pump driven by a motor through a flexible transmission and a pressure-relief valve. A variable orifice serves as a load for the system.

The motor model uses an Ideal Angular Velocity Source block. The load on the shaft decreases the velocity with a slip coefficient of 1. The load on the pump drive shaft is measured with the torque sensor. The shaft between the motor and the pump is assumed to be compliant and is simulated with a rotational spring and damper. The simulation starts with the variable orifice open, which results in a low output pressure and the maximum flow rate going to the system.

simulink pump example

The orifice starts closing at 0. The output pressure builds up until it reaches 75e5 Pa, and is maintained at this level by the pressure-relief valve. Just after 3. The plots below show how flow rates vary in the system as the orifice is closed. All of the fluid exiting the pump goes through the orifice at the start.

Getting Started with Simulink, Part 1: Building and Simulating a Simple Simulink Model

As the orifice is closed, flow gradually ends up being diverted through the pressure relief valve. Flow resumes through the orifice as it reopens. A modified version of this example exists on your system. Do you want to open this version instead?

simulink pump example

Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select:. Select the China site in Chinese or English for best site performance. Other MathWorks country sites are not optimized for visits from your location. Get trial now. Toggle Main Navigation. Search Support Support MathWorks. Search MathWorks. Open Mobile Search. Off-Canvas Navigation Menu Toggle. No, overwrite the modified version Yes.

Select a Web Site Choose a web site to get translated content where available and see local events and offers. Select web site.Learning how to calculate implied probability from betting odds is key to assessing the potential value in a betting market.

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Implied probability is a conversion of betting odds into a percentage. It takes into account the bookmaker margin to express the expected probability of an outcome occurring.

Modeling a Hydraulic Actuation System

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simulink pump example

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