Record all changes along with performance notes to aid in solving future problems. The antenna q is very high because the radiation resistance is small compared to the reactance of the loop and the vswr bandwidth is very narrow. The tuning of a cascade loop is quite simple once you understand the basic concepts. For calibration, the capacitor positions of the lower and uper band ends and the target frequency are saved for each band. Alex has been an active ham for over 50 years and especially enjoys portable outdoor operation on. If i use a temperature controller, the autotune built into the device often works well if i follow the manufacturers recommendations. Fundamentals of process control theory, 3rd edition.
Pid tuning pid loop tuning software testimonials page. This monitors the specified afr and automatically adjusts fuel metering to unsure the. Tuning software is your global source for professional tuning, so if you are looking for tuningfiles or equipment for tuning cars, you have come to the right place. Vandoren, control engineering 712003 a control loop is a feedback mechanism that attempts to correct discrepancies between a measured process variable and the desired setpoint. Ecutek subaru, mitsubishi and mazda tuning software ecutek. It functions equally well in openloop as it does in closedloop. However, on occasions the noise is difficult to hear andor its maximum, difficult to establish. Apply for a job a step by step guide to pid tuning using simple pid loop tuning software. Adjust the loop until you hear the receiver noise peak, then press the transmit button and fine tune the loop for maximum led brig. In this video we show you how i tune the chameleon floop magnetic loop antenna, for low swr. The control software the main component of the system is the pcbased software. The alexloop walkham portable loop antenna phil salas. On all of these the results from the worksheet looked a bit odd at first but when applied to the loops the figures resulted in stable, but rather over.
The irony for most practitioners is that pid tuning software isnt needed if a steadystate can be established they can tune their loops manually. I hate to have to get outside or open the car window every time i need to tune the loop. Looppro tuner rockwell automation edition control station. Jun 18, 20 download megatunix tuning software for free.
The loop selfinductance can be resonated with capacitance to form a highq parallel tuned circuit. Using a mag loop in the field zaxis of loop is pattern direction zpattern figure8 shaped zpeak direction somewhat broad znoise direction narrow zi have worked ja, kh6, and ua0 portable with alex loop with 510 watts. I had the opportunity to talk with george buckbee, the general manager at expertune inc. Honeywell manual loop tuning tips honeywell loop tuning jobs, employment in dubai 1 honeywell loop tuning jobs available in dubai on. Many possible solutions have been proposed for remotely tuning different magnetic loops. I often have difficulty tuning pid loops, especially for temperature control applications and servomotor motion applications. With many years experience in the field of car tuning and chip tuning software, the viezu team has created a solution which couples cutting edge tuning software, award winning ecu remapping and ecu tuning files, with real research and development, along with market leading customer service and dealer support. Its the only software that accurately models the highly variable process conditions which practitioners refer to as the real world. Alextune loop antenna visual tuner alextune loop antenna visual tuner the alextune makes tuning the alexloop a cinch. However, if the temperature control or motion control is. Alexloop portable hf loop antenna was invented, patented and introduced to the ham market by alex grimberg, py1ahd, in 2007. Magnetic loop antennas for the radio operator with limited space pt. Home made high power magnetic loop antennas amrron. Observe operation and tuning of a feedback control loop tune cascade, ratio, and feedforward control systems using pcbased simulation software recommended resources.
Looppro tuner is awardwinning technology that easily connects to your process data for modeling and tuning. Within seconds i could easily tweak the loop for a minimum swr of 1. This has got to be the best tuning guide the best thing about this manual that it. For that article, i bought the very popular alexloop walkham antenna. Engineers used to want more and more sophisticated technical tools but now they want turnkey services to improve plant performance. Closedloop fuel control utilizes the factory o2 sensor for superior fuel economy under light load. Nov 03, 2015 hence, it would be nice if i could minimize any exposure to the cold air outside the vehicle.
Typically, it is not the tuning of the pid loop that is an issue as much as it is a lack of understanding of how the cascade structure is designed to control a loop. Other variants implement only a subset of the obd protocols. Their most recent pc software package, expertune for windows, takes the user through a looptuning operation stepbystep without a lot of analytical mumbo jumbo. The above pictures shows the best way to operate the alexloop antenna with the operator comfortable seated on a camping chair with one hand finger at the tuning knob and the other hand navigating on the radio controls. Alexloop android remote control app via bluetooth rl5d.
Nov 18, 20 george buckbee, general manager at expertune inc. Ecutek proecu subaru brz toyota ft86 scion frs supports the 2. Tuning software is a company that develop modified files for all vehicle. I could tune the loop and even change band, but my knowledge about programming is not enough to. In order for a control loop to operate as desired, it must first be tuned. This is inteface to control a magnetic loop antenna, especially designed for alexloop antenna. Alexloop antenna motorized tuner controller hardware share. To automatically tune a magnetic loop antenna loftur e. Oct 02, 2015 two kx3 macros for accurately tuning the alexloop posted on october 2, 2015 october 7, 2015 by jose va3pcj the procedure for tuning the alexloop antenna recommended by its designer, alex py1ahd, is by ear, i. A 5v step motor is controlled with a rf remote control. Incidentally, i did find that the proximity of my hand to the tuning capacitor did not noticeably impact tuning.
Loop tuning tunevp a fully operational control loop is the end result of significant investment in terms of field devices, control elements, controllers and the hundreds of hours of effort. Subaru proecu subaru brz toyota ft86 scion frs currently supports 15 different ecu versions. Assuming you have modified your car enough that you think you need tuning, sourcing some kind of scanning equipment whether laptop based or stand alone handheld device is the next step. Following is the tutorial of a diy magnetic loop antenna for the amateur radio band. The primary reason for purchase was to help tune a difficult loop that had resisted other tuning methods. Tuning a control loop is the act of adjusting the values of proportional gain, integral gain, and derivative gain such that the process responds in a manner desired by the operator.
The primary of this transformer is a small loop of wire, fed by standard 50 ohm coaxial cable coax that goes to your hf transceiver. First kh6 repeatedly said he didnt believe me since i. The results are pid parameters that will give the loop in question optimal setpoint tracking or a slow, fast, or faster response for disturbance rejection. A pc running a piece of opensource control software, autocap. It has been developed for use on delayfollowedbyfirstorderlag processes but can also be adapted to real processes. Alex has been an active ham for over 50 years and especially enjoys portable outdoor operation on hf bands.
Almost all technicians will use the closed loop method, where data is taken from an. Alexloop antenna motorized tuner controller this is inteface to control a magnetic loop antenna, especially designed for alexloop antenna. Elm327 is one of a family of obd translators from toad software. How to get the most out of your software for loop tuning. Designed with the loopcalculators on the web it should tune on 160, 80 and 40m. Two kx3 macros for accurately tuning the alexloop the wakes.
Try to operate the loop in as many different process conditions as practical. The alexloop walkham is a small magnetic loop antenna designed by alex py1ahd after nine years of field tests with more than 800 confirmed qrp dxs. A couple of months ago, i was hit by an antenna alexloop from py1ahd. A calibration process let the controller know whre is the minimum and maximum limit are. Tuning a cascade loop is simple, as long as the concepts of the cascade loop are understood. The attainment of a highq tells us that the loop antenna is not lossy and inefficient. Alexloop walkham portable hf small magnetic loop antenna.
Pid tuning software control station a process control company. The is a big shift in the needs of plants and things like retirements, downsizing, and skill losses have changed what is required. Aug 15, 2016 further fine tuning is now performed with small changes to one parameter at a time and allowing sufficient time for the change to be observed. Make any beginners mistakes in excel not on your plant, and be confident in your tuning before committing the new parameters to your controller. Most obviously, to tune the pcm, you must have some kind of scanning software to read sensor outputs such as o2 sensor readings, knock counts, fuel trims, etc. As a matter of fact, after tuning for minimum swr, removing my hand from the tuning knob often. Scan tools for doityourselfers can display sensor values and system data, but diy scan tools cannot perform various system selftests such as checking the operation of the fuel pump, cooling fans, idle speed control motor or solenoid, egr solenoid, ac compressor clutch, fuel injectors, evap leak. How about the alex loop box does that look like it is meant to be. An automatic tuner for small magnetic loop antennas. There are two major methods of tuning a control loop. I was always impressed with georges knowledge and his dedication to helping isa. When connected to a car, the proecu software offers real time data.
Dec 12, 2005 tuning a cascade loop is simple, as long as the concepts of the cascade loop are understood. This is pid tuning software written in ms excel that both hugely speeds up the tuning process and lets you learn the techniques in the blueprint on a simulation of your process. Tuning software ecu remapping software tuning files. In recent years, various vendors have developed software that allows an inexpensive palm pilot, windows cebased personal digital assistant pda, pocket pc, tablet pc or even a smart cell phone to function as a scan tool. It tabulates pid parameters, model parameters, rrt, quality of fit, and relative. After several days of use, its pluses and minuses became clear. The autocap system described here is mainly a software effort, both on the pc, and for the motor controller. Jul 24, 2015 a magnetic loop antenna is electrically simple and looks like a two turn transformer with a tuning capacitor in the larger loop. The alexloop walkham portable loop antenna phil salas ad5x. The procedure for tuning the alexloop antenna recommended by its designer, alex py1ahd, is by ear, i.
In part one of this series, i covered the use of one brand of commercially available, small transmitting loop antennas, also known as magnetic loops. Looppro tuner rockwell automation edition is intuitive software for tuning your most challenging pid control loops, and its the preferred pid tuning solution of rockwell automation. Feb 06, 2015 for advanced diagnostics on todays vehicles, a full feature scan tool is an absolute must. It is then possible to customise the way the logged data are displayed using the time graphs, data table, custom 2d graphing, and custom 3d graphing tabs in the log viewer. Their most recent pc software package, expertune for windows, takes the user through a loop tuning operation stepbystep without a lot of analytical mumbo jumbo. The alexloop premier is the new and further enhanced version of the original alexloop with special manufactured ultra low loss mono block gold plated pl259 connectors. Just clamp it on the pl259 connector and turn the tuner knob until the led shines brightest as you transmit in any mode. Alexloop antenna motorized tuner controller hardware. Romuald, quebec, has 22 years of plant experience at companies including monsanto, domtar paper, dow corning, and shell oil.
Buy now alexloop premier the alexloop has long been the gold standard of the portable magnetic loop antenna. Two kx3 macros for accurately tuning the alexloop the. Tuning a magnetic loop antenna using an arduinocontrolled. Pid tuning software control station a process control. Loop tuning will be covered next month in the third and final installment in this series. Megatunix is a crossplatform tuning application for some of the available diy fuel injection controllers, including the megasquirt ms1, ms1extra, ms2 and ms2extra as well as the libreems efi system and the jimstim ecu stimulatordevelopment tool. Alexloop walkham small magnetic loop antenna features. It must be precise enough to tune the antenna as close to the operating. Reviewed and tested posted on january, 2020 by alex 126 comments purpose of this article is to save you time researching reliable professional obd software for your pclaptopmobile. First kh6 repeatedly said he didnt believe me since i was 57 on 5w. Build a magnetic loop antenna controlled by arduino. The controller applies the necessary corrective actions via an actuator that can drive the process variable up or down.
Tuning a magnetic loop antenna using an arduinocontrolled vacuum variable capacitor dennis brown, vk6fadf, and lee. Tunewizard is a software solution to optimize control loop performance using a comprehensive approach by thoroughly assessing various control elements. May 10, 2017 remote tuning for magnetic loop alexloop by android app via bluetooth. Ecutek subaru, mitsubishi and mazda tuning software. The problem associated with this license software product magnetic loop antennas. The software calculates the frequencyshift per motor step automatically. Control loop tuning once a process and associated control components are installed, the control loop must be calibrated to perform in the manner intended by the designer. Alex tune clips on to an alex loop to show tuning the alex tune clips onto the loop assembly adjacent to the tuning control. Hence, it would be nice if i could minimize any exposure to the cold air outside the vehicle. The backlash in the gear is eliminated by always running to the target position from the lower frequency side. But based on yokogawas analysis of control loop problems we have found. Open loop tuning the zeigler nichols openloop tuning method is a way of relating the process parameters delay time, process gain and time constant to the controller parameters controller gain and reset time.