PIDTune vs Bit Converter Plus

PID Tuner uses the IMC (Internal Model Control) method to calculate PID tuning parameters. I’ve tried a lot of tuning methods over the years and have found this one to be the best. The app is written for the iPad to show all the information on one page. The program calculates: PID Parameters: Controller Gain (Kc) Integral Time (Ti) Derivative Time (Td) For process types First Order with Dead Time (FO) Second Order with Dead Time (SO) Integrating or Long Time Constant with Dead Time (I) For controller types Parallel (non-interacting) c(s) = Kc (1 + 1/(Ti s) + Td s) Series (interacting) c(s) = Kc (Ti s + 1)/(Ti s)(Td s + 1) For controller modes PID PI You can either enter the process gain (Kp) directly or enter the changes in the controlled virable (CV) and manipulated variable (MV). Tuning aggression is adjusted using the slider to set the closed loop time constant to the process time constant ratio (λ/Ƭ). The closed loop time constant (λ) is the time the controller is expected to reach set point (plus the dead time (ϴ)). Setting the closed loop time constant to process time constant ratio (λ/Ƭ) to 1.0 will make the MV change to its final value and allow the process to settle out to the setpoint. Setting (λ/Ƭ) greater than 1.0 will give a slower responce. Setting (λ/Ƭ) less than 1.0 will cause the MV to make a larger change and then reduce to its final value. Tight tuning would be to set the close loop time constant to the dead time. Use the Integrating Process type (Ƭ = ∞) for both integrating processes or processes with long time constants. These processes use the maximum slope as the process gain. Tuning aggression for these processes is determined by setting the closed loop time constant to the dead time ratio (λ/ϴ). Once again, setting the closed loop time constat to the dead time gives tight control. References: “Probably the test simple PID tuning rules in the World,” Sigurd Skogestad, Jounal of Process Control, July 3, 2001 “Consider the generalized IMC-PID method for PID controller tuning of time-delay processes,” Y. Lee, S. Park, M. Lee, Hydrocarbon Processing, January 2006

Bit Converter allows you to easily convert between bits, bytes, kilobits, kilobytes, megabits, megabytes, gigabits, gigabytes, terabits, terabytes, petabits, petabytes, exabits, exabytes, zettabits, zettabytes, yottabits, yottabytes. Enter the value and unit and the calculator will perform the conversion to all units. Notes: The value of K (Kilo) during calculations can take two values 1024 or 1000, depends on which type of calculation you want to perform. Consider using K = 1024 when you are considering storage capacity, whether in hard disk, DVDs, flash drives or other devices and storage media. K = 1000 should be used when you are thinking of throughput, e.g. the speed at which information is transferred. The difference between a kilobyte (KB) and a kilobit (Kb). Bytes are used to describe storage, whereas bits are used to describe data transmission speeds. Example: If a computer has 1 KB of disk space is saying that it has 1024 B of space, now the throughput of the network card is 1 KB/s then it mean that it transmits data to 1000 B/s. Bits Bit (b) is a unit of measurement used in the binary system to store or transfer data, such as the speed of an internet connection or the quality scale of an audio or a video recording. A 0 or a 1 is typically used to denote a bit. A byte is 8 bits long. In addition to yes/no, true/false, plus/minus, and other values, a bit can also be represented by others. A bit is one of the essential units used in digital communication, computer technology, information technology, and for storing, processing, and transmitting many forms of data. Byte The byte, which is widely used in information technology, digital technology, and other related sectors, is the fundamental unit of digital information transfer and storage. It is one of the most fundamental data measuring units in programming and one of the smallest units of memory in computer technology. As 1 byte can send 256 commands, the early computers were built with processors that supported this format. 8 bits make up a byte, which functions as a single unit for the storing, processing, or transfer of digital data. Bit Converter add support for Dark Mode. Bit Converter is a tiny app that conserves storage space and also work offline. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.