# US 2016/0187875 A1 · Variable magnetization machine controller > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0187875 A1 - Document ID: US20160187875A1 - Status: Published application - Kind: A1 - Application number: 14/911,270 - Filed: 2013-09-12 - Published: 2016-06-30 - Earliest claimed: 2013-09-12 - Assignees: Nissan Motor Co., Ltd.; Wisconsin Alumni Research Foundation - Applicants: Nissan Motor Co., Ltd.; Wisconsin Alumni Research Foundation - Inventors: Takashi FUKUSHIGE; Chen-yen YU; Robert D. LORENZ - Web page: https://patentgrep.com/patent/US20160187875A1 ## CPC - G05B 19/4155: characterised by program execution, i.e. part program or machine function execution, e.g. selection of a program - B60L 15/007: {Physical arrangements or structures of drive train converters specially adapted for the propulsion motors of electric vehicles} - B60L 15/025: {using field orientation; Vector control; Direct Torque Control [DTC]} - H02P 21/0089: {using field weakening} - H02P 21/12: Stator flux based control involving the use of rotor position or rotor speed sensors - H02P 25/00: Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details - H02P 25/08: Reluctance motors - G05B 2219/35411: Clamp detachable teaching box magnetically on housing - Y02T 10/64: Electric machine technologies in electromobility - G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G) - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - H02P: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A variable magnetization machine controller including a hysteresis control component configured to receive an ideal magnetization state signal, output an actual magnetization signal based on the ideal magnetization state signal for control of a variable magnetization machine, and modify the actual magnetization state signal in accordance with an error value between the ideal magnetization state signal and the actual magnetization state signal. ## Claims ### Claim 1 A variable magnetization machine controller comprising: a hysteresis control component configured to receive an ideal magnetization state signal, output an actual magnetization signal based on the ideal magnetization state signal for control of a variable magnetization machine, and modify the actual magnetization state signal in accordance with an error value between the ideal magnetization state signal and the actual magnetization state signal. ### Claim 2 (depends on 1) The variable magnetization machine controller according to claim 1, wherein the hysteresis control component comprises a sample and hold component that is configured to output the actual magnetization state signal and to modify the actual magnetization state signal in accordance with the error value. ### Claim 3 (depends on 1) The variable magnetization machine controller according to claim 1, wherein the hysteresis control component comprises a proportional-integral compensator that is configured to receive an error signal representing the error value and remove a steady state error from the error signal so that the hysteresis control component modifies the actual magnetization state signal in accordance with the error value from which the steady state error has been removed. ### Claim 4 (depends on 3) The variable magnetization machine controller according to claim 3, wherein the compensator is configured to change compensation characteristics in accordance with a driving pattern of a vehicle including the variable magnetization machine and the variable magnetization machine controller, the compensator being configured to remove the steady state error signal based on the compensation characteristics. ### Claim 5 (depends on 4) The variable magnetization machine controller according to claim 4, further comprising a location determining device configured to determine a location of the vehicle based on which the driving pattern of the vehicle is determined. ### Claim 6 (depends on 5) The variable magnetization machine controller according to claim 5, wherein the location determining device includes a global positioning system device. ### Claim 7 (depends on 4) The variable magnetization machine controller according to claim 4, further comprising a driving mode selection device configured to select a driving mode of the vehicle based on which the driving pattern of the vehicle is determined. ### Claim 8 (depends on 4) The variable magnetization machine controller according to claim 4, further comprising a driving history recordation device configured to record a driving history of the vehicle over a period of time such the driving pattern of the vehicle is determined based on the driving history. ### Claim 9 (depends on 8) The variable magnetization machine controller according to claim 8, further comprising a component configured to perform a fast fourier transform process on data representing the driving history. ### Claim 10 (depends on 1) The variable magnetization machine controller according to claim 1, wherein the hysteresis control component is further configured to output a pulse signal in synchronization with the actual magnetization state signal such that the variable magnetization machine is further controlled in accordance with the pulse signal. ### Claim 11 (depends on 2) The variable magnetization machine controller according to claim 2, further comprising a signal modifying component configured to modify the ideal magnetization state signal prior to inputting the ideal magnetization state signal into the sample and hold circuit. ### Claim 12 (depends on 11) The variable magnetization machine controller according to claim 11, wherein the signal modifying component includes a proportional plus derivative compensator configured to modify the ideal magnetization state signal. ### Claim 13 (depends on 2) The variable magnetization machine controller according to claim 2, wherein the hysteresis control component comprises a proportional-integral compensator that is configured to receive an error signal representing the error value and remove a steady state error from the error signal so that the hysteresis control component modifies the actual magnetization state signal in accordance with the error value from which the steady state error has been removed. ### Claim 14 (depends on 2) The variable magnetization machine controller according to claim 2, wherein the hysteresis control component is further configured to output a pulse signal in synchronization with the actual magnetization signal such that the variable magnetization machine is further controlled in accordance with the pulse signal. ### Claim 15 (depends on 3) The variable magnetization machine controller according to claim 3, wherein the hysteresis control component is further configured to output a pulse signal in synchronization with the actual magnetization signal such that the variable magnetization machine is further controlled in accordance with the pulse signal. ### Claim 16 (depends on 4) The variable magnetization machine controller according to claim 4, wherein the hysteresis control component is further configured to output a pulse signal in synchronization with the actual magnetization signal such that the variable magnetization machine is further controlled in accordance with the pulse signal. ### Claim 17 (depends on 5) The variable magnetization machine controller according to claim 5, wherein the hysteresis control component is further configured to output a pulse signal in synchronization with the actual magnetization signal such that the variable magnetization machine is further controlled in accordance with the pulse signal. ### Claim 18 (depends on 6) The variable magnetization machine controller according to claim 6, wherein the hysteresis control component is further configured to output a pulse signal in synchronization with the actual magnetization signal such that the variable magnetization machine is further controlled in accordance with the pulse signal. ### Claim 19 (depends on 7) The variable magnetization machine controller according to claim 7, wherein the hysteresis control component is further configured to output a pulse signal in synchronization with the actual magnetization signal such that the variable magnetization machine is further controlled in accordance with the pulse signal. ### Claim 20 (depends on 8) The variable magnetization machine controller according to claim 8, wherein the hysteresis control component is further configured to output a pulse signal in synchronization with the actual magnetization signal such that the variable magnetization machine is further controlled in accordance with the pulse signal.