Voice coil design software

Voice coil actuators are a type of direct drive mechanism that provides extremely precise positioning over small displacements. Selfcontained kits, such as sensatas voice coil actuator developers kit, that include a vca with a builtin feedback sensor and a programmable controller with pccompatible motion control software, enable users to take advantage of the benefits of vcas without. In addition to the information of the voice coil design considerations included on the page this file should be found should be the comsol model for the voice coil, so it can be edited with proper software, and sized, gap width, all changed to produce possibly a better voice coil. By electromagnetic and mechanical design and optimization, they have advantages of high force density, low mover mass, smooth motion, and quick response, etc. Finemotor has become the industry standard and is the optimum simulation tool for designing the magnet system, voice coil and spider for woofers, domes, telephonereceivers, headphones etc. I hope this will help others tackle those voice coil. To design the dual 4 ohm speaker, the 8 ohm speakers voice coil is basically split into two coils, each having half of the original impedance. It uses an ultraminiature wlp package and includes a current detection resistor for constant current control, which makes the ic ideal for miniaturization of camera modules intended for use in cameraequipped mobile phones.

True audio has released its latest version of winspeakerz enclosuredesign software designed for the windows 95 operating system. Quickfield packages that can be applied to the various aspects of speaker design. Design tools that help engineers understand and implement technologies are critical to adoption. To calculate the inductance of a singlelayer, aircore coil. Voice coil design project 11656 itt beam steering project. Its dual 2ohm voice coils provide versatile wiring options, and it keeps loud bass details tight and clear via the cast aluminum frame and satin nickel springloaded speaker terminals. The two magnets interact, and every time the electromagnets polarity changes, the interaction between the magnets changes. Finemotor is the optimum simulation tool for designing the magnet system, voice coil and spider for woofers, domes, telephonereceivers, headphones etc.

Measuring and modeling a dual voice coil dvc subwoofer those are the frequencies that le is calculated at, like 10khz and 1khz. Voice coil actuators are single phase motors which can be controller like a dc motor. Voice coil calculated as 1layer, 2layer etc up to 10layers. Coildesigner is a flexible coil simulation tool that can shorten product development time frames and reduce product development and production costs.

The advantage of the dual 4 ohm speaker is that it can be configured as an 8 ohm driver with the two coils in series or as a 2 ohm driver with the two coils in parallel, while the 8 ohm speaker is. This software was originally created by coildesigner. The 12inchthick polypropylene driver of this 750w kicker compvx subwoofer reduces bass distortion with its solokon cone reinforcement. What this user manual does cover the vvc software is a tool to fast design circular voice coils for magnetodynamic loudspeakers, this manual allow the user to quickly become efficient with the user interface vvc software. The parameters that pe gives assumes both voice coils are driven in this case they wired in parallel.

True audio has released its latest version of winspeakerz enclosure design software designed for the windows 95 operating system. At last, customize pattern squaretriangle and target spl variation. If calculating the area using the radius then include the cores radius plus the radius of the wire. With one integrated tool, you can design your product, simulate its performance and optimize it for multiple objectives. When position controlling a springreturn solenoid with a feedback sensor, its relatively simple. Voice coil actuators precise control of zaxis and fsms. A movingmagnettype versus moving coil vca is ideal for heat dissipation by virtue of its stationary coil design fig. Motor design including ferrofluid, for damping and cooling. Enter the coil length distance from first to last winding see diagram. Design and optimization of a voice coil actuator for precision motion applications article in ieee transactions on magnetics 516. There are argued advantages and disadvantages both ways. Bidirectional actuators can be realized, rotatory as well as linear.

Since its original release in 2002, over 4 million runs and 30 inhouse validations have been conducted to verify the. Finemotor, finecone, finebox, fine xover and fine dsp. When you connect an amp to each voice coil like you plan on doing you are doing the same thing by applying a voltage to both voice coils except in this case seperately. Drv201 voice coil motor driver for camera auto focus. The program has userfriendly standard graphical user interface gui. As an input, it takes values of ts driver parameters such as vas volume of air, fs frequency, pe thermal power, re dc resistance of the voice coil, qes electrical q of loudspeaker, and q of loudspeaker qts. These fast, high accuracy, linear voice coil actuators with integrated feedback are useful tools in laser scanning. Kicker compvx 12 dualvoicecoil 2ohm subwoofer black. Voice coil, the periodical of the loudspeaker industry is published by. Pointsource acoustics use the magnet system simulation program magnet from infolytica which is a highly. Modeling and design of a voicecoil motor for autofocusing.

The coil design program frtcoils the coil design program frtco. Aug 25, 2016 voice coil actuators with moving magnet and moving coil from h2w technologies voice coils are suitable for fixedstroke applications, with typical maximum strokes of 5 to 6 inches. Dd audio 4025 nw 36th street oklahoma city, ok 73112 405 2392800 fax. Oct 23, 2014 our weekly newsletter the audio voice was created to address the interests of both audioxpress and voice coil readership communities. Pdf voice coil temperature in loudspeaker performance. Isolation, pointing, and suppression ips system for highperformance spacecraft besides being designed for a different size payload than viss, the ips strut includes a dualstage voice coil design for improved dynamic range as well as improved lownoise drive electronics. Advanced power electronics center department of electrical and control engineering national chiao tung university, taiwan.

Figure 1a is a snapshot of the screen once the driver is loaded into the program. Note that when doing calculations for a coil with very thin wire as. Voice coil motors can be controller by s300 and s700 servo amplifiers, see. And my coil is made out of copper wire which is 1 mm thick diameter and has a resistance of ohms per meters. Is there any formula to calculate number of windings to get a 50 watts voice coil of a speaker. Externally vibrating the cone will cause the voice coil to generate electricity. Drv2511q1 8a automotive haptic driver for solenoids and. Pi learn more oems and system integrators have been looking for an integrated, easy to control and adapt solution. The coil and magnet are concentric about a common axis and there exists an engineered magnetic return path. Seas coaxial replacement tweeter h1162 for t18re coaxs. Voice coil design project 11656 itt beam steering project ben. It began initially as audiocad for the macintosh in 1989, followed by a more elaborate version on a macintosh platform as in 1990. Regular industry news and trends, product design and new technology highlights, tradeshow calendar, magazine updates and much more, now directly to your inbox.

In this speaker design software, you need to enter following parameters. Linear dc motors, voice coil motors vcm or voice coil actuators vca are the simplest type of electric motors. Sep 11, 2018 selfcontained kits like sensatas voice coil actuator developers kit which include a vca with a builtin feedback sensor and a programmable controller with pccompatible motion control software allow users to take advantage of the benefits of vcas without needing to specify the electronics required for a complete control system. The drv2511q1 device provides protection functions such as undervoltage. The maxwell field simulator is an interactive software package that uses finite element analysis to solve magnetic problems. Reversing the polarity of the applied voltage will move.

A rotary voice coil actuator is sometimes referred to as a flattened version of the linear design described above. Alpine type r voice coil dual 2 ohm 10, 12, r10, r12 our price. Modeling and design of a voicecoil motor for autofocusing digital cameras using an electromagnetic simulation software. Finemotor is also the optimum simulation tool for designing the magnet system, voice coil and spider for woofers, domes, telephone. Passing electricity through wire causes a magnetic field around the wire, which attracts or repels, causing the cone to move back and forth. The term voice coil has been generalized and refers to any galvanometer like mechanism that uses a solenoid to move an object backandforth within a magnetic field. Test bench eighteen sound 18tlw3000 18 dual voice coil. Boxport design is another good speaker design software for windows. The audio voice weekly newsletter for audioxpress and voice. Voice coil motors vcm, also called voice coil actuators vca, are a very mature design that utilizes a magnet and yoke in conjunction with a coil. Measuring and modeling a dual voice coil dvc subwoofer. Custom voice coils have been the core of our business at precision econowind since we began producing electric coils over 40 years ago.

On the end of the voice coil actuator will be a small load lets just imagine a 10 oz cube, screwed onto the end of the shaft. The low moving mass allows for high accelerations of light payloads. Voice coil size, power handling, xmax, coil wire and turns, even magnet design. The term voice coil comes from one of its historically first applications. These devices are currently used for a wide range of applications, including moving much larger masses. A voicecoil actuator, also known as a noncommutated dc linear actuator, is a type of directdrive linear motor.

If the coil is overdriven it may leave the gap, generating significant distortion and losing the heatsinking benefit of the steel, heating rapidly. Most linear voice coil actuators utilize a moving coil design, meaning that the coil itself moves while the magnets remain stationary within the assembly. Mid and high frequency speakers cones only move a small distance, compared to the large movement of bass speakers. The underhung design which is used mostly in highend speakers has the coils height smaller than the gaps. The lv8498ct is a constant current driver ic for voice coil motors that supports i 2 c control integrating a digitalanalog converter dac. Positioning control of voice coil motor with shorted turn.

What medical design engineers need to know about vca. This includes rectangular micro speakers and voice. When a current is applied to the coil, a force is generated. Is there any formula to get number of windings for a 50w. Voice coil actuators precise control of zaxis and fsms these fast, high accuracy, linear voice coil actuators with integrated feedback are useful tools in laser scanning.

Selfcontained kits like sensatas voice coil actuator developers kit which include a vca with a builtin feedback sensor and a programmable controller with pccompatible motion control software allow users to take advantage of the benefits of vcas without needing to specify the electronics required for a complete control system. Concise, timely and accurate, voice coil is your onestop source to stay competitive in the loudspeaker industry. Lets plug it into winspeakerz and see what happens. Its compact size allows it to fit into small spaces. In other words, to transform a linear voice coil actuator into a rotary version, place the linear voice coil actuator lengthwise on a table as it would sit if it were operating horizontally and flatten it into an essentially 2d object. Jul 17, 2018 a rotary voice coil actuator is sometimes referred to as a flattened version of the linear design described above. The movingmagnet voice coil actuator left keeps the coil fixed so that the heat generated by the coil assembly can be easily managed compared to the moving coil type actuator right. Voice coil motor ava series planar voice coil motors use highperformance permanent magnets. Design of voice coil motor with the forward winding for linear vibroimpact.

The voice coils electromagnet is placed within a permanent magnetic field. Every month, voice coil delivers loudspeaker professionals with the latest in technology and components. The most common method is the overhung design where the height of the voice coil is greater than the magnetic gaps height. How does one position control a voice coil actuator. Design and simulation of voice coil motor for the microelectric load. However, there are times when using moving magnet designs is more beneficial, a design in which the coils are stationary, and the housed magnet moves through the coils. Dc magnetics magnetic field and flux distribution inside speaker. In todays demanding environment for loudspeaker designs, designing for a. Like linear motors, they work on the principle of a permanent magnet field and a coil winding. D2004 replacement voice coil 290065 seas coaxial replacement tweeter h70 for the c16n001f coax. Precision laser scanning can design custom motion control electronics and software for your voice coil actuator requirements. This driver looks great on paper, with excellent power handling and a decent x max maximum excursion of the voice coil front to back. In case you are not well familiar with these parameters, go to the aforementioned link.

Applying a voltage across the terminals of the motor causes the motor to move to one direction. A look at the spreadsheet i created some time back to design a new voice coil for the chanticleer 2d570 and most recently the grunow 460. It has very low electrical and mechanical time constants. As i wrote in my previous post, driver le is frequency dependent, unlike a regular inductor. Select the measurement units inches or centimeters. A voice coil actuator, also known as a noncommutated dc linear actuator, is a type of directdrive linear motor. Input data and parameters with extra precision for micro speakers. If calculating the area using the diameter then include the cores diameter plus the diameter of the wire. The area includes part of the coil, as shown in the diagram above. Voice coil calculated as 1layer, 2layer etc up to 10layers motor design including ferrofluid, for damping and cooling attach flux profiles from other fea software input data and parameters with extra precision for micro speakers rectangular micro speakers with both rectangular vc and magnet system. Seas coaxial replacement tweeter h1603 for the l12rexfc h1602 coax. Externally vibrating the cone will cause the voice coil to. Alpine type r voice coil dual 4 ohm 10, 12, r10, r12. The output stage consists of a full hbridge capable of delivering 8 a of peak current.

A linear voice coil actuator is ideal for short stroke typically less than 2 inches closed loop servo applications. Coildesigner has been developed by designers and engineers, for designers and engineers. Advanced engineering simulation software audioxpress. This article was originally published in voice coil, december 20. The force generated is fairly constant throughout the stroke length, with a small dropoff, typically less than 5 percent, at the ends of stroke. Coildesigner the finandtube heat exchanger design rating software exclusively developed to take advantage of the rich graphical environment of microsoft windows. Free support for loudspeaker projects, sourcing oem speaker building supplies, and passive crossover design. In underhung voice coil designs see below, the coil is shorter than the magnetic gap, a topology that provides consistent electromotive force over a limited range of motion, known as x max. F322812mm 1404002 f383312mm 1404003 f383315mm 1404004 m403512mm 1404005.

Inverting the current direction inverts the force direction. Enter venue dimensions including width, length, and height. When the magnets are repeatedly repelled and attracted, they move the coil back and forth quickly, kind of like the piston in an engine. In particular, it is commonly used to refer to the coil of wire that moves the readwrite heads in a movinghead disk drive. Dec 17, 2008 the voice coil can be long and the pole plate thin or the voice coil short and the pole plate thick to achieve the same outcome. Voice coil actuation technology for medical devices. Speaker wiring tutorial jl audio help center search articles. Simulation software for speaker design has been around since the. The voice coil actuator in the disk generally has no natural position that it springs to as is the case with speaker voice coil actuators.

Round, rectangular, dshaped, flat wire or custom shaped coils can be produced using precision layering practices. Linear voice coil motors actuators and micro voice coil. Sep 14, 2015 a look at the spreadsheet i created some time back to design a new voice coil for the chanticleer 2d570 and most recently the grunow 460. You might be able to make this something you can position with a given duty cycle at. What medical design engineers need to know about vca voice. The differences, advantages and disadvantages of both methods are listed. The design uses an ultraefficient switching output technology developed by texas instruments, but with features added for the automotive industry. The diameter of the voice coil must also be considered in driver design since the larger the diameter, the cooler the voice coil can stay since the generated heat is less concentrated into a. The larger the magnet and voice coil bl the greater the power and efficiency if well made. We sell raw speaker drivers tweeters, woofers, subwoofer, midrange drivers, full range drivers, speaker kits, amplifiers, capacitors, resistors, and inductors. Designated a subwoofer, the 18tlw3000 is a high power handling woofer rated at 1,800 wrms with substantial features, including what eighteen sound calls a tetracoil dual winding and interleaved sandwich voice coil isv. Designed to save users time in determining the most suitable linear actuator, the companys online vca calculation tool calculates the optimum linear voice coil. Design and optimization of a voice coil actuator for. The image above shows two ways in which the voice coil is immersed in the magnetic field.