{"id":1958,"date":"2019-02-12T01:48:23","date_gmt":"2019-02-12T01:48:23","guid":{"rendered":"https:\/\/cyflexdoc.wpengine.com\/usage-help-manual\/11-control-systems\/"},"modified":"2026-02-16T12:17:21","modified_gmt":"2026-02-16T17:17:21","slug":"7-control-systems","status":"publish","type":"page","link":"https:\/\/cyflex.com\/index.php\/usage-help-manual\/7-control-systems\/","title":{"rendered":"7: Control Systems"},"content":{"rendered":"\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Command<\/span><\/th>\nPurpose<\/span><\/th>\n<\/tr>\n
abort_autotune<\/span><\/a><\/td>\nAbort the auto-tuning process for a specified PID controller by setting flags or sending events to stop the tuning.<\/td>\n<\/tr>\n
autotune<\/span><\/a><\/td>\n\n

Initiate tuning of a specified PID loop using the Ziegler-Nichols method (closed loop version – with relay caused oscillations). Note that the length of time to auto-tune is dependent on the period of oscillation of the system.<\/p>\n<\/td>\n<\/tr>\n

calc_gains<\/span><\/a><\/td>\nCompute recommended proportional, integral, and derivative gains for a control loop based on user-provided inputs.<\/td>\n<\/tr>\n
chirp<\/span><\/a><\/td>\nGenerate a swept-frequency cosine signal for system identification.<\/td>\n<\/tr>\n
cmd_map_gen<\/span><\/a><\/td>\nGenerate a controller’s command map and gain scale table based on specifications from a breakpoint table.<\/td>\n<\/tr>\n
ctrl_cfg_dsply<\/span><\/a><\/td>\nDisplay information about control configuration events, including new_state, action, subcode, index, and label, as they occur.<\/td>\n<\/tr>\n
ctrl_disp<\/span><\/a><\/td>\nDisplay control loop information for specified controllers or loops.<\/td>\n<\/tr>\n
ctrl_params<\/span><\/a><\/td>\nSet gains for control loops using parameters specified in a data file.<\/td>\n<\/tr>\n
ctrl_spec_converter<\/span><\/a><\/td>\nUse this script to create a new spec file that will work with the eng_ctrl_task in 6.3.x versions of CyFlex.<\/td>\n<\/tr>\n
disp_dygains<\/span><\/a><\/td>\nDisplay dyno controller gains based on the current engine control mode.<\/td>\n<\/tr>\n
dy<\/span><\/a><\/td>\nSet the dyno controller to open loop mode and specify a target value with an optional ramp rate.<\/td>\n<\/tr>\n
dy_gains<\/span><\/a><\/td>\nSet the proportional, integral, and derivative gains for the dyno control loop based on provided arguments.<\/td>\n<\/tr>\n
dy_ramp<\/span><\/a><\/td>\nSet the dyno controller open loop ramping on or off with a specified rate when turning on.<\/td>\n<\/tr>\n
eng_ctrl_specs<\/span><\/a><\/td>\nConfigure the engine control task specifications.<\/td>\n<\/tr>\n
eng_ctrl_task<\/span><\/a><\/td>\nProvide PID control algorithms for engine throttle and dyno(s).<\/td>\n<\/tr>\n
eng_specs<\/span><\/a><\/td>\nProcess the Engine Specifications file to initialize Engine Constants, Real and String Variables, and PAM Parameters for system configuration.<\/td>\n<\/tr>\n
filter_k<\/span><\/a><\/td>\nSet or display the filter coefficient for a specified AI or FI channel based on command-line input.<\/td>\n<\/tr>\n
gen_load<\/span><\/a><\/td>\nSets DO bits that control relays in a load bank.<\/td>\n<\/tr>\n
other<\/span><\/a><\/td>\nSet the target value for the ‘other’ controller and optionally a ramp rate.<\/td>\n<\/tr>\n
perf_labels<\/span><\/a><\/td>\nLoad engine performance specifications from a file into shared memory for the CyFlex system.<\/td>\n<\/tr>\n
prbs<\/span><\/a><\/td>\nGenerate pseudo random binary sequence for use as an input in system identification.<\/td>\n<\/tr>\n
prop<\/span><\/a><\/td>\nPerform torque control to simulate a propeller.<\/td>\n<\/tr>\n
pwm_ctrl<\/span><\/a><\/td>\nControl an actuator using pulse width modulation based on command inputs and error calculations.<\/td>\n<\/tr>\n
pwm_specs<\/span><\/a><\/td>\nConfigure a PWM control task by reading specifications from a file and sending them via events<\/td>\n<\/tr>\n
reset_dyno_int<\/span><\/a><\/td>\nSet dyno controller integral term to 0.0<\/td>\n<\/tr>\n
reset_int_term<\/span><\/a><\/td>\nZero out the integral term of a PID controller to enable starting from zero initial conditions.<\/td>\n<\/tr>\n
reset_throt_int<\/span><\/a><\/td>\nSet throttle controller integral term to 0.0<\/td>\n<\/tr>\n
set_dndt_k<\/span><\/a><\/td>\nSet the value of the dn\/dt filter coefficient for engine acceleration measurement in CyFlex.<\/td>\n<\/tr>\n
set_eng_mode<\/span><\/a><\/td>\nSet engine control mode<\/td>\n<\/tr>\n
set_eng_specs<\/span><\/a><\/td>\nSet engine specification variables based on values from a specified customer input file and map.<\/td>\n<\/tr>\n
set_eng_specs12<\/span><\/a><\/td>\nRead the TRI input specs file and set CyFlex variables based on the specified configuration and optional cycle.<\/td>\n<\/tr>\n
set_lwr_bnd<\/span><\/a><\/td>\nSet the lower bound for a specified controller.<\/td>\n<\/tr>\n
set_upr_bnd<\/span><\/a><\/td>\nSet the upper bound for a specified engine controller.<\/td>\n<\/tr>\n
set_user<\/span><\/a><\/td>\nSet the closed-loop target for a user control loop.<\/td>\n<\/tr>\n
sp<\/span><\/a><\/td>\nSet speed target values and ramp rates.<\/td>\n<\/tr>\n
th<\/span><\/a><\/td>\n\n

Set the throttle controller to open loop mode and specify the throttle target value.<\/p>\n<\/td>\n<\/tr>\n

th_ff<\/span><\/a><\/td>\nSwitch throttle feed forward ON\/OFF<\/td>\n<\/tr>\n
th_gains<\/span><\/a><\/td>\nSet the proportional, integral, and derivative gains for the throttle controller.<\/td>\n<\/tr>\n
th_ramp<\/span><\/a><\/td>\nSet throttle ramp parameters for open loop throttle control.<\/td>\n<\/tr>\n
to<\/span><\/a><\/td>\nSet torque target values and ramp rates.<\/td>\n<\/tr>\n
torq_conv<\/span><\/a><\/td>\nPerform torque control to simulate the hydraulic load of a torque converter.<\/td>\n<\/tr>\n
torq_sched<\/span><\/a><\/td>\nPerform torque control by applying a torque target based on a specified schedule as a function of speed.<\/td>\n<\/tr>\n
update_user_specs<\/span><\/a><\/td>\nUpdate the user control specification file with new gains and\/or feedback variable values for a specified loop based on current system variables. This executable is not intended for end-users.<\/td>\n<\/tr>\n
user_ctrl_specs<\/span><\/a><\/td>\nProcess and configure user control loop specifications from a file, handling keywords to set up control tasks.<\/td>\n<\/tr>\n
user_ctrl_task<\/span><\/a><\/td>\nProvide PID control algorithms for user control loops. Normally spawned by the user_ctrl_specs task.<\/td>\n<\/tr>\n
u_ctrl<\/span><\/a><\/td>\nChange specification settings for a user control task.<\/td>\n<\/tr>\n
u_ff<\/span><\/a><\/td>\nSwitch the user loop feed forward on or off for a specified controller.<\/td>\n<\/tr>\n
u_gains<\/span><\/a><\/td>\nSet the proportional, integral, and derivative gains for a specified user control loop.<\/td>\n<\/tr>\n
u_mode<\/span><\/a><\/td>\nSet the operating mode of a user control loop to open or closed loop.<\/td>\n<\/tr>\n
u_ramp<\/span><\/a><\/td>\nSpecify the ramp characteristics (on, off, and rate) for user control variables in both open and closed loop modes.<\/td>\n<\/tr>\n
u_target<\/span><\/a><\/td>\nSet the target for user control loops in either open or closed loop mode.<\/td>\n<\/tr>\n
u_toler<\/span><\/a><\/td>\nSet the tolerance for user control loops.<\/td>\n<\/tr>\n
v4_ctrl<\/span><\/a><\/td>\nControl the Froude V4 dyno by monitoring variables and generating commands based on changes in CyFlex.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Command Purpose abort_autotune Abort the auto-tuning process for a specified PID controller by setting flags or sending events to stop the tuning. autotune Initiate tuning of a specified PID loop using the Ziegler-Nichols method (closed loop version – with relay caused oscillations). Note that the length of time to auto-tune is dependent on the period […]<\/p>\n","protected":false},"author":47,"featured_media":0,"parent":557,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1958","page","type-page","status-publish","hentry"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/cyflex.com\/index.php\/wp-json\/wp\/v2\/pages\/1958","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cyflex.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/cyflex.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/cyflex.com\/index.php\/wp-json\/wp\/v2\/users\/47"}],"replies":[{"embeddable":true,"href":"https:\/\/cyflex.com\/index.php\/wp-json\/wp\/v2\/comments?post=1958"}],"version-history":[{"count":0,"href":"https:\/\/cyflex.com\/index.php\/wp-json\/wp\/v2\/pages\/1958\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/cyflex.com\/index.php\/wp-json\/wp\/v2\/pages\/557"}],"wp:attachment":[{"href":"https:\/\/cyflex.com\/index.php\/wp-json\/wp\/v2\/media?parent=1958"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}